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提交 53f2c4a8 编写于 作者: L Linus Torvalds
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Merge tag 'nfs-for-3.5-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs 

Pull NFS client updates from Trond Myklebust:
 "New features include:
   - Rewrite the O_DIRECT code so that it can share the same coalescing
     and pNFS functionality as the page cache code.
   - Allow the server to provide hints as to when we should use pNFS,
     and when it is more efficient to read and write through the
     metadata server.
   - NFS cache consistency updates:
     * Use the ctime to emulate a change attribute for NFSv2/v3 so that
       all NFS versions can share the same cache management code.
     * New cache management code will only look at the change attribute
       and size attribute when deciding whether or not our cached data
       is still valid or not.
     * Don't request NFSv4 post-op attributes on writes in cases such as
       O_DIRECT, where we don't care about data cache consistency, or
       when we have a write delegation, and know that our cache is still
       consistent.
     * Don't request NFSv4 post-op attributes on operations such as
       COMMIT, where there are no expected metadata updates.
     * Don't request NFSv4 directory post-op attributes in cases where
       the operations themselves already return change attribute
       updates: i.e. operations such as OPEN, CREATE, REMOVE, LINK and
       RENAME.
   - Speed up 'ls' and friends by using READDIR rather than READDIRPLUS
     if we detect no attempts to lookup filenames.
   - Improve the code sharing between NFSv2/v3 and v4 mounts
   - NFSv4.1 state management efficiency improvements
   - More patches in preparation for NFSv4/v4.1 migration functionality."

Fix trivial conflict in fs/nfs/nfs4proc.c that was due to the dcache
qstr name initialization changes (that made the length/hash a 64-bit
union)

* tag 'nfs-for-3.5-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (146 commits)
  NFSv4: Add debugging printks to state manager
  NFSv4: Map NFS4ERR_SHARE_DENIED into an EACCES error instead of EIO
  NFSv4: update_changeattr does not need to set NFS_INO_REVAL_PAGECACHE
  NFSv4.1: nfs4_reset_session should use nfs4_handle_reclaim_lease_error
  NFSv4.1: Handle other occurrences of NFS4ERR_CONN_NOT_BOUND_TO_SESSION
  NFSv4.1: Handle NFS4ERR_CONN_NOT_BOUND_TO_SESSION in the state manager
  NFSv4.1: Handle errors in nfs4_bind_conn_to_session
  NFSv4.1: nfs4_bind_conn_to_session should drain the session
  NFSv4.1: Don't clobber the seqid if exchange_id returns a confirmed clientid
  NFSv4.1: Add DESTROY_CLIENTID
  NFSv4.1: Ensure we use the correct credentials for bind_conn_to_session
  NFSv4.1: Ensure we use the correct credentials for session create/destroy
  NFSv4.1: Move NFSPROC4_CLNT_BIND_CONN_TO_SESSION to the end of the operations
  NFSv4.1: Handle NFS4ERR_SEQ_MISORDERED when confirming the lease
  NFSv4: When purging the lease, we must clear NFS4CLNT_LEASE_CONFIRM
  NFSv4: Clean up the error handling for nfs4_reclaim_lease
  NFSv4.1: Exchange ID must use GFP_NOFS allocation mode
  nfs41: Use BIND_CONN_TO_SESSION for CB_PATH_DOWN*
  nfs4.1: add BIND_CONN_TO_SESSION operation
  NFSv4.1 test the mdsthreshold hint parameters
  ...
上级 8f6576ad cc0a9843
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Showing with 3960 addition and 2881 deletion
fs/nfs/Kconfig
浏览文件 @ 53f2c4a8
......@@ -29,9 +29,20 @@ config NFS_FS
If unsure, say N.
config NFS_V2
bool "NFS client support for NFS version 2"
depends on NFS_FS
default y
help
This option enables support for version 2 of the NFS protocol
(RFC 1094) in the kernel's NFS client.
If unsure, say Y.
config NFS_V3
bool "NFS client support for NFS version 3"
depends on NFS_FS
default y
help
This option enables support for version 3 of the NFS protocol
(RFC 1813) in the kernel's NFS client.
......
fs/nfs/Makefile
浏览文件 @ 53f2c4a8
......@@ -4,11 +4,12 @@
obj-$(CONFIG_NFS_FS) += nfs.o
nfs-y := client.o dir.o file.o getroot.o inode.o super.o nfs2xdr.o \
direct.o pagelist.o proc.o read.o symlink.o unlink.o \
nfs-y := client.o dir.o file.o getroot.o inode.o super.o \
direct.o pagelist.o read.o symlink.o unlink.o \
write.o namespace.o mount_clnt.o \
dns_resolve.o cache_lib.o
nfs-$(CONFIG_ROOT_NFS) += nfsroot.o
nfs-$(CONFIG_NFS_V2) += proc.o nfs2xdr.o
nfs-$(CONFIG_NFS_V3) += nfs3proc.o nfs3xdr.o
nfs-$(CONFIG_NFS_V3_ACL) += nfs3acl.o
nfs-$(CONFIG_NFS_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o \
......
fs/nfs/blocklayout/blocklayout.c
浏览文件 @ 53f2c4a8
......@@ -187,7 +187,6 @@ static void bl_end_io_read(struct bio *bio, int err)
struct parallel_io *par = bio->bi_private;
const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
struct nfs_read_data *rdata = (struct nfs_read_data *)par->data;
do {
struct page *page = bvec->bv_page;
......@@ -198,9 +197,12 @@ static void bl_end_io_read(struct bio *bio, int err)
SetPageUptodate(page);
} while (bvec >= bio->bi_io_vec);
if (!uptodate) {
if (!rdata->pnfs_error)
rdata->pnfs_error = -EIO;
pnfs_set_lo_fail(rdata->lseg);
struct nfs_read_data *rdata = par->data;
struct nfs_pgio_header *header = rdata->header;
if (!header->pnfs_error)
header->pnfs_error = -EIO;
pnfs_set_lo_fail(header->lseg);
}
bio_put(bio);
put_parallel(par);
......@@ -221,7 +223,7 @@ bl_end_par_io_read(void *data, int unused)
{
struct nfs_read_data *rdata = data;
rdata->task.tk_status = rdata->pnfs_error;
rdata->task.tk_status = rdata->header->pnfs_error;
INIT_WORK(&rdata->task.u.tk_work, bl_read_cleanup);
schedule_work(&rdata->task.u.tk_work);
}
......@@ -229,6 +231,7 @@ bl_end_par_io_read(void *data, int unused)
static enum pnfs_try_status
bl_read_pagelist(struct nfs_read_data *rdata)
{
struct nfs_pgio_header *header = rdata->header;
int i, hole;
struct bio *bio = NULL;
struct pnfs_block_extent *be = NULL, *cow_read = NULL;
......@@ -239,7 +242,7 @@ bl_read_pagelist(struct nfs_read_data *rdata)
int pg_index = rdata->args.pgbase >> PAGE_CACHE_SHIFT;
dprintk("%s enter nr_pages %u offset %lld count %u\n", __func__,
rdata->npages, f_offset, (unsigned int)rdata->args.count);
rdata->pages.npages, f_offset, (unsigned int)rdata->args.count);
par = alloc_parallel(rdata);
if (!par)
......@@ -249,17 +252,17 @@ bl_read_pagelist(struct nfs_read_data *rdata)
isect = (sector_t) (f_offset >> SECTOR_SHIFT);
/* Code assumes extents are page-aligned */
for (i = pg_index; i < rdata->npages; i++) {
for (i = pg_index; i < rdata->pages.npages; i++) {
if (!extent_length) {
/* We've used up the previous extent */
bl_put_extent(be);
bl_put_extent(cow_read);
bio = bl_submit_bio(READ, bio);
/* Get the next one */
be = bl_find_get_extent(BLK_LSEG2EXT(rdata->lseg),
be = bl_find_get_extent(BLK_LSEG2EXT(header->lseg),
isect, &cow_read);
if (!be) {
rdata->pnfs_error = -EIO;
header->pnfs_error = -EIO;
goto out;
}
extent_length = be->be_length -
......@@ -282,11 +285,12 @@ bl_read_pagelist(struct nfs_read_data *rdata)
struct pnfs_block_extent *be_read;
be_read = (hole && cow_read) ? cow_read : be;
bio = bl_add_page_to_bio(bio, rdata->npages - i, READ,
bio = bl_add_page_to_bio(bio, rdata->pages.npages - i,
READ,
isect, pages[i], be_read,
bl_end_io_read, par);
if (IS_ERR(bio)) {
rdata->pnfs_error = PTR_ERR(bio);
header->pnfs_error = PTR_ERR(bio);
bio = NULL;
goto out;
}
......@@ -294,9 +298,9 @@ bl_read_pagelist(struct nfs_read_data *rdata)
isect += PAGE_CACHE_SECTORS;
extent_length -= PAGE_CACHE_SECTORS;
}
if ((isect << SECTOR_SHIFT) >= rdata->inode->i_size) {
if ((isect << SECTOR_SHIFT) >= header->inode->i_size) {
rdata->res.eof = 1;
rdata->res.count = rdata->inode->i_size - f_offset;
rdata->res.count = header->inode->i_size - f_offset;
} else {
rdata->res.count = (isect << SECTOR_SHIFT) - f_offset;
}
......@@ -345,7 +349,6 @@ static void bl_end_io_write_zero(struct bio *bio, int err)
struct parallel_io *par = bio->bi_private;
const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
struct nfs_write_data *wdata = (struct nfs_write_data *)par->data;
do {
struct page *page = bvec->bv_page;
......@@ -358,9 +361,12 @@ static void bl_end_io_write_zero(struct bio *bio, int err)
} while (bvec >= bio->bi_io_vec);
if (unlikely(!uptodate)) {
if (!wdata->pnfs_error)
wdata->pnfs_error = -EIO;
pnfs_set_lo_fail(wdata->lseg);
struct nfs_write_data *data = par->data;
struct nfs_pgio_header *header = data->header;
if (!header->pnfs_error)
header->pnfs_error = -EIO;
pnfs_set_lo_fail(header->lseg);
}
bio_put(bio);
put_parallel(par);
......@@ -370,12 +376,13 @@ static void bl_end_io_write(struct bio *bio, int err)
{
struct parallel_io *par = bio->bi_private;
const int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
struct nfs_write_data *wdata = (struct nfs_write_data *)par->data;
struct nfs_write_data *data = par->data;
struct nfs_pgio_header *header = data->header;
if (!uptodate) {
if (!wdata->pnfs_error)
wdata->pnfs_error = -EIO;
pnfs_set_lo_fail(wdata->lseg);
if (!header->pnfs_error)
header->pnfs_error = -EIO;
pnfs_set_lo_fail(header->lseg);
}
bio_put(bio);
put_parallel(par);
......@@ -391,9 +398,9 @@ static void bl_write_cleanup(struct work_struct *work)
dprintk("%s enter\n", __func__);
task = container_of(work, struct rpc_task, u.tk_work);
wdata = container_of(task, struct nfs_write_data, task);
if (likely(!wdata->pnfs_error)) {
if (likely(!wdata->header->pnfs_error)) {
/* Marks for LAYOUTCOMMIT */
mark_extents_written(BLK_LSEG2EXT(wdata->lseg),
mark_extents_written(BLK_LSEG2EXT(wdata->header->lseg),
wdata->args.offset, wdata->args.count);
}
pnfs_ld_write_done(wdata);
......@@ -404,12 +411,12 @@ static void bl_end_par_io_write(void *data, int num_se)
{
struct nfs_write_data *wdata = data;
if (unlikely(wdata->pnfs_error)) {
bl_free_short_extents(&BLK_LSEG2EXT(wdata->lseg)->bl_inval,
if (unlikely(wdata->header->pnfs_error)) {
bl_free_short_extents(&BLK_LSEG2EXT(wdata->header->lseg)->bl_inval,
num_se);
}
wdata->task.tk_status = wdata->pnfs_error;
wdata->task.tk_status = wdata->header->pnfs_error;
wdata->verf.committed = NFS_FILE_SYNC;
INIT_WORK(&wdata->task.u.tk_work, bl_write_cleanup);
schedule_work(&wdata->task.u.tk_work);
......@@ -540,6 +547,7 @@ bl_find_get_zeroing_page(struct inode *inode, pgoff_t index,
static enum pnfs_try_status
bl_write_pagelist(struct nfs_write_data *wdata, int sync)
{
struct nfs_pgio_header *header = wdata->header;
int i, ret, npg_zero, pg_index, last = 0;
struct bio *bio = NULL;
struct pnfs_block_extent *be = NULL, *cow_read = NULL;
......@@ -552,7 +560,7 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
pgoff_t index;
u64 temp;
int npg_per_block =
NFS_SERVER(wdata->inode)->pnfs_blksize >> PAGE_CACHE_SHIFT;
NFS_SERVER(header->inode)->pnfs_blksize >> PAGE_CACHE_SHIFT;
dprintk("%s enter, %Zu@%lld\n", __func__, count, offset);
/* At this point, wdata->pages is a (sequential) list of nfs_pages.
......@@ -566,7 +574,7 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
/* At this point, have to be more careful with error handling */
isect = (sector_t) ((offset & (long)PAGE_CACHE_MASK) >> SECTOR_SHIFT);
be = bl_find_get_extent(BLK_LSEG2EXT(wdata->lseg), isect, &cow_read);
be = bl_find_get_extent(BLK_LSEG2EXT(header->lseg), isect, &cow_read);
if (!be || !is_writable(be, isect)) {
dprintk("%s no matching extents!\n", __func__);
goto out_mds;
......@@ -597,10 +605,10 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
dprintk("%s zero %dth page: index %lu isect %llu\n",
__func__, npg_zero, index,
(unsigned long long)isect);
page = bl_find_get_zeroing_page(wdata->inode, index,
page = bl_find_get_zeroing_page(header->inode, index,
cow_read);
if (unlikely(IS_ERR(page))) {
wdata->pnfs_error = PTR_ERR(page);
header->pnfs_error = PTR_ERR(page);
goto out;
} else if (page == NULL)
goto next_page;
......@@ -612,7 +620,7 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
__func__, ret);
end_page_writeback(page);
page_cache_release(page);
wdata->pnfs_error = ret;
header->pnfs_error = ret;
goto out;
}
if (likely(!bl_push_one_short_extent(be->be_inval)))
......@@ -620,11 +628,11 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
else {
end_page_writeback(page);
page_cache_release(page);
wdata->pnfs_error = -ENOMEM;
header->pnfs_error = -ENOMEM;
goto out;
}
/* FIXME: This should be done in bi_end_io */
mark_extents_written(BLK_LSEG2EXT(wdata->lseg),
mark_extents_written(BLK_LSEG2EXT(header->lseg),
page->index << PAGE_CACHE_SHIFT,
PAGE_CACHE_SIZE);
......@@ -632,7 +640,7 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
isect, page, be,
bl_end_io_write_zero, par);
if (IS_ERR(bio)) {
wdata->pnfs_error = PTR_ERR(bio);
header->pnfs_error = PTR_ERR(bio);
bio = NULL;
goto out;
}
......@@ -647,16 +655,16 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
/* Middle pages */
pg_index = wdata->args.pgbase >> PAGE_CACHE_SHIFT;
for (i = pg_index; i < wdata->npages; i++) {
for (i = pg_index; i < wdata->pages.npages; i++) {
if (!extent_length) {
/* We've used up the previous extent */
bl_put_extent(be);
bio = bl_submit_bio(WRITE, bio);
/* Get the next one */
be = bl_find_get_extent(BLK_LSEG2EXT(wdata->lseg),
be = bl_find_get_extent(BLK_LSEG2EXT(header->lseg),
isect, NULL);
if (!be || !is_writable(be, isect)) {
wdata->pnfs_error = -EINVAL;
header->pnfs_error = -EINVAL;
goto out;
}
if (be->be_state == PNFS_BLOCK_INVALID_DATA) {
......@@ -664,7 +672,7 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
be->be_inval)))
par->bse_count++;
else {
wdata->pnfs_error = -ENOMEM;
header->pnfs_error = -ENOMEM;
goto out;
}
}
......@@ -677,15 +685,15 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
if (unlikely(ret)) {
dprintk("%s bl_mark_sectors_init fail %d\n",
__func__, ret);
wdata->pnfs_error = ret;
header->pnfs_error = ret;
goto out;
}
}
bio = bl_add_page_to_bio(bio, wdata->npages - i, WRITE,
bio = bl_add_page_to_bio(bio, wdata->pages.npages - i, WRITE,
isect, pages[i], be,
bl_end_io_write, par);
if (IS_ERR(bio)) {
wdata->pnfs_error = PTR_ERR(bio);
header->pnfs_error = PTR_ERR(bio);
bio = NULL;
goto out;
}
......
fs/nfs/blocklayout/blocklayoutdev.c
浏览文件 @ 53f2c4a8
......@@ -123,7 +123,7 @@ nfs4_blk_decode_device(struct nfs_server *server,
uint8_t *dataptr;
DECLARE_WAITQUEUE(wq, current);
int offset, len, i, rc;
struct net *net = server->nfs_client->net;
struct net *net = server->nfs_client->cl_net;
struct nfs_net *nn = net_generic(net, nfs_net_id);
struct bl_dev_msg *reply = &nn->bl_mount_reply;
......
fs/nfs/client.c
浏览文件 @ 53f2c4a8
......@@ -65,7 +65,7 @@ static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq);
static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion)
{
int ret = 0;
struct nfs_net *nn = net_generic(clp->net, nfs_net_id);
struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
if (clp->rpc_ops->version != 4 || minorversion != 0)
return ret;
......@@ -90,7 +90,9 @@ static bool nfs4_disable_idmapping = true;
* RPC cruft for NFS
*/
static const struct rpc_version *nfs_version[5] = {
#ifdef CONFIG_NFS_V2
[2] = &nfs_version2,
#endif
#ifdef CONFIG_NFS_V3
[3] = &nfs_version3,
#endif
......@@ -129,6 +131,7 @@ const struct rpc_program nfsacl_program = {
#endif /* CONFIG_NFS_V3_ACL */
struct nfs_client_initdata {
unsigned long init_flags;
const char *hostname;
const struct sockaddr *addr;
size_t addrlen;
......@@ -172,7 +175,7 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_
clp->cl_rpcclient = ERR_PTR(-EINVAL);
clp->cl_proto = cl_init->proto;
clp->net = get_net(cl_init->net);
clp->cl_net = get_net(cl_init->net);
#ifdef CONFIG_NFS_V4
err = nfs_get_cb_ident_idr(clp, cl_init->minorversion);
......@@ -182,7 +185,6 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_
spin_lock_init(&clp->cl_lock);
INIT_DELAYED_WORK(&clp->cl_renewd, nfs4_renew_state);
rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS client");
clp->cl_boot_time = CURRENT_TIME;
clp->cl_state = 1 << NFS4CLNT_LEASE_EXPIRED;
clp->cl_minorversion = cl_init->minorversion;
clp->cl_mvops = nfs_v4_minor_ops[cl_init->minorversion];
......@@ -207,6 +209,7 @@ static void nfs4_shutdown_session(struct nfs_client *clp)
if (nfs4_has_session(clp)) {
nfs4_deviceid_purge_client(clp);
nfs4_destroy_session(clp->cl_session);
nfs4_destroy_clientid(clp);
}
}
......@@ -235,6 +238,9 @@ static void nfs4_shutdown_client(struct nfs_client *clp)
nfs_idmap_delete(clp);
rpc_destroy_wait_queue(&clp->cl_rpcwaitq);
kfree(clp->cl_serverowner);
kfree(clp->cl_serverscope);
kfree(clp->cl_implid);
}
/* idr_remove_all is not needed as all id's are removed by nfs_put_client */
......@@ -248,7 +254,7 @@ void nfs_cleanup_cb_ident_idr(struct net *net)
/* nfs_client_lock held */
static void nfs_cb_idr_remove_locked(struct nfs_client *clp)
{
struct nfs_net *nn = net_generic(clp->net, nfs_net_id);
struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
if (clp->cl_cb_ident)
idr_remove(&nn->cb_ident_idr, clp->cl_cb_ident);
......@@ -301,10 +307,8 @@ static void nfs_free_client(struct nfs_client *clp)
if (clp->cl_machine_cred != NULL)
put_rpccred(clp->cl_machine_cred);
put_net(clp->net);
put_net(clp->cl_net);
kfree(clp->cl_hostname);
kfree(clp->server_scope);
kfree(clp->impl_id);
kfree(clp);
dprintk("<-- nfs_free_client()\n");
......@@ -321,7 +325,7 @@ void nfs_put_client(struct nfs_client *clp)
return;
dprintk("--> nfs_put_client({%d})\n", atomic_read(&clp->cl_count));
nn = net_generic(clp->net, nfs_net_id);
nn = net_generic(clp->cl_net, nfs_net_id);
if (atomic_dec_and_lock(&clp->cl_count, &nn->nfs_client_lock)) {
list_del(&clp->cl_share_link);
......@@ -456,6 +460,8 @@ static bool nfs4_cb_match_client(const struct sockaddr *addr,
clp->cl_cons_state == NFS_CS_SESSION_INITING))
return false;
smp_rmb();
/* Match the version and minorversion */
if (clp->rpc_ops->version != 4 ||
clp->cl_minorversion != minorversion)
......@@ -504,6 +510,47 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat
return NULL;
}
static bool nfs_client_init_is_complete(const struct nfs_client *clp)
{
return clp->cl_cons_state != NFS_CS_INITING;
}
int nfs_wait_client_init_complete(const struct nfs_client *clp)
{
return wait_event_killable(nfs_client_active_wq,
nfs_client_init_is_complete(clp));
}
/*
* Found an existing client. Make sure it's ready before returning.
*/
static struct nfs_client *
nfs_found_client(const struct nfs_client_initdata *cl_init,
struct nfs_client *clp)
{
int error;
error = nfs_wait_client_init_complete(clp);
if (error < 0) {
nfs_put_client(clp);
return ERR_PTR(-ERESTARTSYS);
}
if (clp->cl_cons_state < NFS_CS_READY) {
error = clp->cl_cons_state;
nfs_put_client(clp);
return ERR_PTR(error);
}
smp_rmb();
BUG_ON(clp->cl_cons_state != NFS_CS_READY);
dprintk("<-- %s found nfs_client %p for %s\n",
__func__, clp, cl_init->hostname ?: "");
return clp;
}
/*
* Look up a client by IP address and protocol version
* - creates a new record if one doesn't yet exist
......@@ -512,11 +559,9 @@ static struct nfs_client *
nfs_get_client(const struct nfs_client_initdata *cl_init,
const struct rpc_timeout *timeparms,
const char *ip_addr,
rpc_authflavor_t authflavour,
int noresvport)
rpc_authflavor_t authflavour)
{
struct nfs_client *clp, *new = NULL;
int error;
struct nfs_net *nn = net_generic(cl_init->net, nfs_net_id);
dprintk("--> nfs_get_client(%s,v%u)\n",
......@@ -527,60 +572,29 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
spin_lock(&nn->nfs_client_lock);
clp = nfs_match_client(cl_init);
if (clp)
goto found_client;
if (new)
goto install_client;
if (clp) {
spin_unlock(&nn->nfs_client_lock);
if (new)
nfs_free_client(new);
return nfs_found_client(cl_init, clp);
}
if (new) {
list_add(&new->cl_share_link, &nn->nfs_client_list);
spin_unlock(&nn->nfs_client_lock);
new->cl_flags = cl_init->init_flags;
return cl_init->rpc_ops->init_client(new,
timeparms, ip_addr,
authflavour);
}
spin_unlock(&nn->nfs_client_lock);
new = nfs_alloc_client(cl_init);
} while (!IS_ERR(new));
dprintk("--> nfs_get_client() = %ld [failed]\n", PTR_ERR(new));
dprintk("<-- nfs_get_client() Failed to find %s (%ld)\n",
cl_init->hostname ?: "", PTR_ERR(new));
return new;
/* install a new client and return with it unready */
install_client:
clp = new;
list_add(&clp->cl_share_link, &nn->nfs_client_list);
spin_unlock(&nn->nfs_client_lock);
error = cl_init->rpc_ops->init_client(clp, timeparms, ip_addr,
authflavour, noresvport);
if (error < 0) {
nfs_put_client(clp);
return ERR_PTR(error);
}
dprintk("--> nfs_get_client() = %p [new]\n", clp);
return clp;
/* found an existing client
* - make sure it's ready before returning
*/
found_client:
spin_unlock(&nn->nfs_client_lock);
if (new)
nfs_free_client(new);
error = wait_event_killable(nfs_client_active_wq,
clp->cl_cons_state < NFS_CS_INITING);
if (error < 0) {
nfs_put_client(clp);
return ERR_PTR(-ERESTARTSYS);
}
if (clp->cl_cons_state < NFS_CS_READY) {
error = clp->cl_cons_state;
nfs_put_client(clp);
return ERR_PTR(error);
}
BUG_ON(clp->cl_cons_state != NFS_CS_READY);
dprintk("--> nfs_get_client() = %p [share]\n", clp);
return clp;
}
/*
......@@ -588,26 +602,11 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
*/
void nfs_mark_client_ready(struct nfs_client *clp, int state)
{
smp_wmb();
clp->cl_cons_state = state;
wake_up_all(&nfs_client_active_wq);
}
/*
* With sessions, the client is not marked ready until after a
* successful EXCHANGE_ID and CREATE_SESSION.
*
* Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate
* other versions of NFS can be tried.
*/
int nfs4_check_client_ready(struct nfs_client *clp)
{
if (!nfs4_has_session(clp))
return 0;
if (clp->cl_cons_state < NFS_CS_READY)
return -EPROTONOSUPPORT;
return 0;
}
/*
* Initialise the timeout values for a connection
*/
......@@ -654,12 +653,11 @@ static void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
*/
static int nfs_create_rpc_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
rpc_authflavor_t flavor,
int discrtry, int noresvport)
rpc_authflavor_t flavor)
{
struct rpc_clnt *clnt = NULL;
struct rpc_create_args args = {
.net = clp->net,
.net = clp->cl_net,
.protocol = clp->cl_proto,
.address = (struct sockaddr *)&clp->cl_addr,
.addrsize = clp->cl_addrlen,
......@@ -670,9 +668,9 @@ static int nfs_create_rpc_client(struct nfs_client *clp,
.authflavor = flavor,
};
if (discrtry)
if (test_bit(NFS_CS_DISCRTRY, &clp->cl_flags))
args.flags |= RPC_CLNT_CREATE_DISCRTRY;
if (noresvport)
if (test_bit(NFS_CS_NORESVPORT, &clp->cl_flags))
args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
if (!IS_ERR(clp->cl_rpcclient))
......@@ -713,7 +711,7 @@ static int nfs_start_lockd(struct nfs_server *server)
.nfs_version = clp->rpc_ops->version,
.noresvport = server->flags & NFS_MOUNT_NORESVPORT ?
1 : 0,
.net = clp->net,
.net = clp->cl_net,
};
if (nlm_init.nfs_version > 3)
......@@ -805,36 +803,43 @@ static int nfs_init_server_rpcclient(struct nfs_server *server,
return 0;
}
/*
* Initialise an NFS2 or NFS3 client
/**
* nfs_init_client - Initialise an NFS2 or NFS3 client
*
* @clp: nfs_client to initialise
* @timeparms: timeout parameters for underlying RPC transport
* @ip_addr: IP presentation address (not used)
* @authflavor: authentication flavor for underlying RPC transport
*
* Returns pointer to an NFS client, or an ERR_PTR value.
*/
int nfs_init_client(struct nfs_client *clp, const struct rpc_timeout *timeparms,
const char *ip_addr, rpc_authflavor_t authflavour,
int noresvport)
struct nfs_client *nfs_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
const char *ip_addr, rpc_authflavor_t authflavour)
{
int error;
if (clp->cl_cons_state == NFS_CS_READY) {
/* the client is already initialised */
dprintk("<-- nfs_init_client() = 0 [already %p]\n", clp);
return 0;
return clp;
}
/*
* Create a client RPC handle for doing FSSTAT with UNIX auth only
* - RFC 2623, sec 2.3.2
*/
error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_UNIX,
0, noresvport);
error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_UNIX);
if (error < 0)
goto error;
nfs_mark_client_ready(clp, NFS_CS_READY);
return 0;
return clp;
error:
nfs_mark_client_ready(clp, error);
nfs_put_client(clp);
dprintk("<-- nfs_init_client() = xerror %d\n", error);
return error;
return ERR_PTR(error);
}
/*
......@@ -847,7 +852,7 @@ static int nfs_init_server(struct nfs_server *server,
.hostname = data->nfs_server.hostname,
.addr = (const struct sockaddr *)&data->nfs_server.address,
.addrlen = data->nfs_server.addrlen,
.rpc_ops = &nfs_v2_clientops,
.rpc_ops = NULL,
.proto = data->nfs_server.protocol,
.net = data->net,
};
......@@ -857,17 +862,28 @@ static int nfs_init_server(struct nfs_server *server,
dprintk("--> nfs_init_server()\n");
switch (data->version) {
#ifdef CONFIG_NFS_V2
case 2:
cl_init.rpc_ops = &nfs_v2_clientops;
break;
#endif
#ifdef CONFIG_NFS_V3
if (data->version == 3)
case 3:
cl_init.rpc_ops = &nfs_v3_clientops;
break;
#endif
default:
return -EPROTONOSUPPORT;
}
nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
data->timeo, data->retrans);
if (data->flags & NFS_MOUNT_NORESVPORT)
set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
/* Allocate or find a client reference we can use */
clp = nfs_get_client(&cl_init, &timeparms, NULL, RPC_AUTH_UNIX,
data->flags & NFS_MOUNT_NORESVPORT);
clp = nfs_get_client(&cl_init, &timeparms, NULL, RPC_AUTH_UNIX);
if (IS_ERR(clp)) {
dprintk("<-- nfs_init_server() = error %ld\n", PTR_ERR(clp));
return PTR_ERR(clp);
......@@ -880,7 +896,7 @@ static int nfs_init_server(struct nfs_server *server,
server->options = data->options;
server->caps |= NFS_CAP_HARDLINKS|NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|NFS_CAP_OWNER_GROUP|
NFS_CAP_ATIME|NFS_CAP_CTIME|NFS_CAP_MTIME;
NFS_CAP_ATIME|NFS_CAP_CTIME|NFS_CAP_MTIME|NFS_CAP_CHANGE_ATTR;
if (data->rsize)
server->rsize = nfs_block_size(data->rsize, NULL);
......@@ -1048,7 +1064,7 @@ static void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_serve
static void nfs_server_insert_lists(struct nfs_server *server)
{
struct nfs_client *clp = server->nfs_client;
struct nfs_net *nn = net_generic(clp->net, nfs_net_id);
struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
spin_lock(&nn->nfs_client_lock);
list_add_tail_rcu(&server->client_link, &clp->cl_superblocks);
......@@ -1065,7 +1081,7 @@ static void nfs_server_remove_lists(struct nfs_server *server)
if (clp == NULL)
return;
nn = net_generic(clp->net, nfs_net_id);
nn = net_generic(clp->cl_net, nfs_net_id);
spin_lock(&nn->nfs_client_lock);
list_del_rcu(&server->client_link);
if (list_empty(&clp->cl_superblocks))
......@@ -1333,21 +1349,27 @@ static int nfs4_init_client_minor_version(struct nfs_client *clp)
* so that the client back channel can find the
* nfs_client struct
*/
clp->cl_cons_state = NFS_CS_SESSION_INITING;
nfs_mark_client_ready(clp, NFS_CS_SESSION_INITING);
}
#endif /* CONFIG_NFS_V4_1 */
return nfs4_init_callback(clp);
}
/*
* Initialise an NFS4 client record
/**
* nfs4_init_client - Initialise an NFS4 client record
*
* @clp: nfs_client to initialise
* @timeparms: timeout parameters for underlying RPC transport
* @ip_addr: callback IP address in presentation format
* @authflavor: authentication flavor for underlying RPC transport
*
* Returns pointer to an NFS client, or an ERR_PTR value.
*/
int nfs4_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
const char *ip_addr,
rpc_authflavor_t authflavour,
int noresvport)
struct nfs_client *nfs4_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
const char *ip_addr,
rpc_authflavor_t authflavour)
{
char buf[INET6_ADDRSTRLEN + 1];
int error;
......@@ -1355,14 +1377,14 @@ int nfs4_init_client(struct nfs_client *clp,
if (clp->cl_cons_state == NFS_CS_READY) {
/* the client is initialised already */
dprintk("<-- nfs4_init_client() = 0 [already %p]\n", clp);
return 0;
return clp;
}
/* Check NFS protocol revision and initialize RPC op vector */
clp->rpc_ops = &nfs_v4_clientops;
error = nfs_create_rpc_client(clp, timeparms, authflavour,
1, noresvport);
__set_bit(NFS_CS_DISCRTRY, &clp->cl_flags);
error = nfs_create_rpc_client(clp, timeparms, authflavour);
if (error < 0)
goto error;
......@@ -1395,12 +1417,13 @@ int nfs4_init_client(struct nfs_client *clp,
if (!nfs4_has_session(clp))
nfs_mark_client_ready(clp, NFS_CS_READY);
return 0;
return clp;
error:
nfs_mark_client_ready(clp, error);
nfs_put_client(clp);
dprintk("<-- nfs4_init_client() = xerror %d\n", error);
return error;
return ERR_PTR(error);
}
/*
......@@ -1429,9 +1452,11 @@ static int nfs4_set_client(struct nfs_server *server,
dprintk("--> nfs4_set_client()\n");
if (server->flags & NFS_MOUNT_NORESVPORT)
set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
/* Allocate or find a client reference we can use */
clp = nfs_get_client(&cl_init, timeparms, ip_addr, authflavour,
server->flags & NFS_MOUNT_NORESVPORT);
clp = nfs_get_client(&cl_init, timeparms, ip_addr, authflavour);
if (IS_ERR(clp)) {
error = PTR_ERR(clp);
goto error;
......@@ -1465,8 +1490,8 @@ static int nfs4_set_client(struct nfs_server *server,
* the MDS.
*/
struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
const struct sockaddr *ds_addr,
int ds_addrlen, int ds_proto)
const struct sockaddr *ds_addr, int ds_addrlen,
int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans)
{
struct nfs_client_initdata cl_init = {
.addr = ds_addr,
......@@ -1474,14 +1499,9 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
.rpc_ops = &nfs_v4_clientops,
.proto = ds_proto,
.minorversion = mds_clp->cl_minorversion,
.net = mds_clp->net,
};
struct rpc_timeout ds_timeout = {
.to_initval = 15 * HZ,
.to_maxval = 15 * HZ,
.to_retries = 1,
.to_exponential = 1,
.net = mds_clp->cl_net,
};
struct rpc_timeout ds_timeout;
struct nfs_client *clp;
/*
......@@ -1489,8 +1509,9 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
* cl_ipaddr so as to use the same EXCHANGE_ID co_ownerid as the MDS
* (section 13.1 RFC 5661).
*/
nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans);
clp = nfs_get_client(&cl_init, &ds_timeout, mds_clp->cl_ipaddr,
mds_clp->cl_rpcclient->cl_auth->au_flavor, 0);
mds_clp->cl_rpcclient->cl_auth->au_flavor);
dprintk("<-- %s %p\n", __func__, clp);
return clp;
......@@ -1701,7 +1722,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
rpc_protocol(parent_server->client),
parent_server->client->cl_timeout,
parent_client->cl_mvops->minor_version,
parent_client->net);
parent_client->cl_net);
if (error < 0)
goto error;
......@@ -1805,6 +1826,7 @@ void nfs_clients_init(struct net *net)
idr_init(&nn->cb_ident_idr);
#endif
spin_lock_init(&nn->nfs_client_lock);
nn->boot_time = CURRENT_TIME;
}
#ifdef CONFIG_PROC_FS
......
fs/nfs/delegation.c
浏览文件 @ 53f2c4a8
......@@ -316,6 +316,10 @@ static int __nfs_inode_return_delegation(struct inode *inode, struct nfs_delegat
* nfs_client_return_marked_delegations - return previously marked delegations
* @clp: nfs_client to process
*
* Note that this function is designed to be called by the state
* manager thread. For this reason, it cannot flush the dirty data,
* since that could deadlock in case of a state recovery error.
*
* Returns zero on success, or a negative errno value.
*/
int nfs_client_return_marked_delegations(struct nfs_client *clp)
......@@ -340,11 +344,9 @@ int nfs_client_return_marked_delegations(struct nfs_client *clp)
server);
rcu_read_unlock();
if (delegation != NULL) {
filemap_flush(inode->i_mapping);
if (delegation != NULL)
err = __nfs_inode_return_delegation(inode,
delegation, 0);
}
iput(inode);
if (!err)
goto restart;
......@@ -380,6 +382,10 @@ void nfs_inode_return_delegation_noreclaim(struct inode *inode)
* nfs_inode_return_delegation - synchronously return a delegation
* @inode: inode to process
*
* This routine will always flush any dirty data to disk on the
* assumption that if we need to return the delegation, then
* we should stop caching.
*
* Returns zero on success, or a negative errno value.
*/
int nfs_inode_return_delegation(struct inode *inode)
......@@ -389,10 +395,10 @@ int nfs_inode_return_delegation(struct inode *inode)
struct nfs_delegation *delegation;
int err = 0;
nfs_wb_all(inode);
if (rcu_access_pointer(nfsi->delegation) != NULL) {
delegation = nfs_detach_delegation(nfsi, server);
if (delegation != NULL) {
nfs_wb_all(inode);
err = __nfs_inode_return_delegation(inode, delegation, 1);
}
}
......@@ -538,6 +544,8 @@ int nfs_async_inode_return_delegation(struct inode *inode,
struct nfs_client *clp = server->nfs_client;
struct nfs_delegation *delegation;
filemap_flush(inode->i_mapping);
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
......
fs/nfs/delegation.h
浏览文件 @ 53f2c4a8
......@@ -66,6 +66,7 @@ static inline int nfs_have_delegation(struct inode *inode, fmode_t flags)
static inline int nfs_inode_return_delegation(struct inode *inode)
{
nfs_wb_all(inode);
return 0;
}
#endif
......
fs/nfs/dir.c
浏览文件 @ 53f2c4a8
......@@ -474,6 +474,29 @@ int nfs_same_file(struct dentry *dentry, struct nfs_entry *entry)
return 0;
}
static
bool nfs_use_readdirplus(struct inode *dir, struct file *filp)
{
if (!nfs_server_capable(dir, NFS_CAP_READDIRPLUS))
return false;
if (test_and_clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(dir)->flags))
return true;
if (filp->f_pos == 0)
return true;
return false;
}
/*
* This function is called by the lookup code to request the use of
* readdirplus to accelerate any future lookups in the same
* directory.
*/
static
void nfs_advise_use_readdirplus(struct inode *dir)
{
set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(dir)->flags);
}
static
void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry)
{
......@@ -871,7 +894,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
desc->file = filp;
desc->dir_cookie = &dir_ctx->dir_cookie;
desc->decode = NFS_PROTO(inode)->decode_dirent;
desc->plus = NFS_USE_READDIRPLUS(inode);
desc->plus = nfs_use_readdirplus(inode, filp) ? 1 : 0;
nfs_block_sillyrename(dentry);
res = nfs_revalidate_mapping(inode, filp->f_mapping);
......@@ -1111,7 +1134,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
if (!inode) {
if (nfs_neg_need_reval(dir, dentry, nd))
goto out_bad;
goto out_valid;
goto out_valid_noent;
}
if (is_bad_inode(inode)) {
......@@ -1140,7 +1163,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
if (fhandle == NULL || fattr == NULL)
goto out_error;
error = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, &dentry->d_name, fhandle, fattr);
error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr);
if (error)
goto out_bad;
if (nfs_compare_fh(NFS_FH(inode), fhandle))
......@@ -1153,6 +1176,9 @@ static int nfs_lookup_revalidate(struct dentry *dentry, struct nameidata *nd)
out_set_verifier:
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
out_valid:
/* Success: notify readdir to use READDIRPLUS */
nfs_advise_use_readdirplus(dir);
out_valid_noent:
dput(parent);
dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) is valid\n",
__func__, dentry->d_parent->d_name.name,
......@@ -1296,7 +1322,7 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
error = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, &dentry->d_name, fhandle, fattr);
error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr);
if (error == -ENOENT)
goto no_entry;
if (error < 0) {
......@@ -1308,6 +1334,9 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
if (IS_ERR(res))
goto out_unblock_sillyrename;
/* Success: notify readdir to use READDIRPLUS */
nfs_advise_use_readdirplus(dir);
no_entry:
res = d_materialise_unique(dentry, inode);
if (res != NULL) {
......@@ -1643,7 +1672,7 @@ int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fhandle,
if (dentry->d_inode)
goto out;
if (fhandle->size == 0) {
error = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, &dentry->d_name, fhandle, fattr);
error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr);
if (error)
goto out_error;
}
......
fs/nfs/direct.c
浏览文件 @ 53f2c4a8
此差异已折叠。
fs/nfs/file.c
浏览文件 @ 53f2c4a8
......@@ -174,6 +174,13 @@ nfs_file_flush(struct file *file, fl_owner_t id)
if ((file->f_mode & FMODE_WRITE) == 0)
return 0;
/*
* If we're holding a write delegation, then just start the i/o
* but don't wait for completion (or send a commit).
*/
if (nfs_have_delegation(inode, FMODE_WRITE))
return filemap_fdatawrite(file->f_mapping);
/* Flush writes to the server and return any errors */
return vfs_fsync(file, 0);
}
......@@ -417,6 +424,7 @@ static int nfs_write_end(struct file *file, struct address_space *mapping,
if (status < 0)
return status;
NFS_I(mapping->host)->write_io += copied;
return copied;
}
......
fs/nfs/fscache.c
浏览文件 @ 53f2c4a8
......@@ -64,23 +64,12 @@ void nfs_fscache_release_client_cookie(struct nfs_client *clp)
* either by the 'fsc=xxx' option to mount, or by inheriting it from the parent
* superblock across an automount point of some nature.
*/
void nfs_fscache_get_super_cookie(struct super_block *sb, const char *uniq,
struct nfs_clone_mount *mntdata)
void nfs_fscache_get_super_cookie(struct super_block *sb, const char *uniq, int ulen)
{
struct nfs_fscache_key *key, *xkey;
struct nfs_server *nfss = NFS_SB(sb);
struct rb_node **p, *parent;
int diff, ulen;
if (uniq) {
ulen = strlen(uniq);
} else if (mntdata) {
struct nfs_server *mnt_s = NFS_SB(mntdata->sb);
if (mnt_s->fscache_key) {
uniq = mnt_s->fscache_key->key.uniquifier;
ulen = mnt_s->fscache_key->key.uniq_len;
}
}
int diff;
if (!uniq) {
uniq = "";
......
fs/nfs/fscache.h
浏览文件 @ 53f2c4a8
......@@ -73,9 +73,7 @@ extern void nfs_fscache_unregister(void);
extern void nfs_fscache_get_client_cookie(struct nfs_client *);
extern void nfs_fscache_release_client_cookie(struct nfs_client *);
extern void nfs_fscache_get_super_cookie(struct super_block *,
const char *,
struct nfs_clone_mount *);
extern void nfs_fscache_get_super_cookie(struct super_block *, const char *, int);
extern void nfs_fscache_release_super_cookie(struct super_block *);
extern void nfs_fscache_init_inode_cookie(struct inode *);
......@@ -172,12 +170,6 @@ static inline void nfs_fscache_unregister(void) {}
static inline void nfs_fscache_get_client_cookie(struct nfs_client *clp) {}
static inline void nfs_fscache_release_client_cookie(struct nfs_client *clp) {}
static inline void nfs_fscache_get_super_cookie(
struct super_block *sb,
const char *uniq,
struct nfs_clone_mount *mntdata)
{
}
static inline void nfs_fscache_release_super_cookie(struct super_block *sb) {}
static inline void nfs_fscache_init_inode_cookie(struct inode *inode) {}
......
fs/nfs/getroot.c
浏览文件 @ 53f2c4a8
......@@ -150,7 +150,7 @@ int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh)
goto out;
/* Start by getting the root filehandle from the server */
ret = server->nfs_client->rpc_ops->getroot(server, mntfh, &fsinfo);
ret = nfs4_proc_get_rootfh(server, mntfh, &fsinfo);
if (ret < 0) {
dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret);
goto out;
......@@ -178,87 +178,4 @@ int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh)
return ret;
}
/*
* get an NFS4 root dentry from the root filehandle
*/
struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh,
const char *devname)
{
struct nfs_server *server = NFS_SB(sb);
struct nfs_fattr *fattr = NULL;
struct dentry *ret;
struct inode *inode;
void *name = kstrdup(devname, GFP_KERNEL);
int error;
dprintk("--> nfs4_get_root()\n");
if (!name)
return ERR_PTR(-ENOMEM);
/* get the info about the server and filesystem */
error = nfs4_server_capabilities(server, mntfh);
if (error < 0) {
dprintk("nfs_get_root: getcaps error = %d\n",
-error);
kfree(name);
return ERR_PTR(error);
}
fattr = nfs_alloc_fattr();
if (fattr == NULL) {
kfree(name);
return ERR_PTR(-ENOMEM);
}
/* get the actual root for this mount */
error = server->nfs_client->rpc_ops->getattr(server, mntfh, fattr);
if (error < 0) {
dprintk("nfs_get_root: getattr error = %d\n", -error);
ret = ERR_PTR(error);
goto out;
}
if (fattr->valid & NFS_ATTR_FATTR_FSID &&
!nfs_fsid_equal(&server->fsid, &fattr->fsid))
memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
inode = nfs_fhget(sb, mntfh, fattr);
if (IS_ERR(inode)) {
dprintk("nfs_get_root: get root inode failed\n");
ret = ERR_CAST(inode);
goto out;
}
error = nfs_superblock_set_dummy_root(sb, inode);
if (error != 0) {
ret = ERR_PTR(error);
goto out;
}
/* root dentries normally start off anonymous and get spliced in later
* if the dentry tree reaches them; however if the dentry already
* exists, we'll pick it up at this point and use it as the root
*/
ret = d_obtain_alias(inode);
if (IS_ERR(ret)) {
dprintk("nfs_get_root: get root dentry failed\n");
goto out;
}
security_d_instantiate(ret, inode);
spin_lock(&ret->d_lock);
if (IS_ROOT(ret) && !(ret->d_flags & DCACHE_NFSFS_RENAMED)) {
ret->d_fsdata = name;
name = NULL;
}
spin_unlock(&ret->d_lock);
out:
if (name)
kfree(name);
nfs_free_fattr(fattr);
dprintk("<-- nfs4_get_root()\n");
return ret;
}
#endif /* CONFIG_NFS_V4 */
fs/nfs/idmap.c
浏览文件 @ 53f2c4a8
......@@ -415,7 +415,7 @@ static int __nfs_idmap_register(struct dentry *dir,
static void nfs_idmap_unregister(struct nfs_client *clp,
struct rpc_pipe *pipe)
{
struct net *net = clp->net;
struct net *net = clp->cl_net;
struct super_block *pipefs_sb;
pipefs_sb = rpc_get_sb_net(net);
......@@ -429,7 +429,7 @@ static int nfs_idmap_register(struct nfs_client *clp,
struct idmap *idmap,
struct rpc_pipe *pipe)
{
struct net *net = clp->net;
struct net *net = clp->cl_net;
struct super_block *pipefs_sb;
int err = 0;
......@@ -530,9 +530,25 @@ static struct nfs_client *nfs_get_client_for_event(struct net *net, int event)
struct nfs_net *nn = net_generic(net, nfs_net_id);
struct dentry *cl_dentry;
struct nfs_client *clp;
int err;
restart:
spin_lock(&nn->nfs_client_lock);
list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) {
/* Wait for initialisation to finish */
if (clp->cl_cons_state == NFS_CS_INITING) {
atomic_inc(&clp->cl_count);
spin_unlock(&nn->nfs_client_lock);
err = nfs_wait_client_init_complete(clp);
nfs_put_client(clp);
if (err)
return NULL;
goto restart;
}
/* Skip nfs_clients that failed to initialise */
if (clp->cl_cons_state < 0)
continue;
smp_rmb();
if (clp->rpc_ops != &nfs_v4_clientops)
continue;
cl_dentry = clp->cl_idmap->idmap_pipe->dentry;
......@@ -640,20 +656,16 @@ static int nfs_idmap_legacy_upcall(struct key_construction *cons,
struct idmap_msg *im;
struct idmap *idmap = (struct idmap *)aux;
struct key *key = cons->key;
int ret;
int ret = -ENOMEM;
/* msg and im are freed in idmap_pipe_destroy_msg */
msg = kmalloc(sizeof(*msg), GFP_KERNEL);
if (IS_ERR(msg)) {
ret = PTR_ERR(msg);
if (!msg)
goto out0;
}
im = kmalloc(sizeof(*im), GFP_KERNEL);
if (IS_ERR(im)) {
ret = PTR_ERR(im);
if (!im)
goto out1;
}
ret = nfs_idmap_prepare_message(key->description, im, msg);
if (ret < 0)
......
fs/nfs/inode.c
浏览文件 @ 53f2c4a8
......@@ -285,9 +285,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
inode->i_mode = fattr->mode;
if ((fattr->valid & NFS_ATTR_FATTR_MODE) == 0
&& nfs_server_capable(inode, NFS_CAP_MODE))
nfsi->cache_validity |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
/* Why so? Because we want revalidate for devices/FIFOs, and
* that's precisely what we have in nfs_file_inode_operations.
*/
......@@ -300,8 +298,6 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
inode->i_op = NFS_SB(sb)->nfs_client->rpc_ops->dir_inode_ops;
inode->i_fop = &nfs_dir_operations;
inode->i_data.a_ops = &nfs_dir_aops;
if (nfs_server_capable(inode, NFS_CAP_READDIRPLUS))
set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
/* Deal with crossing mountpoints */
if (fattr->valid & NFS_ATTR_FATTR_MOUNTPOINT ||
fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) {
......@@ -327,6 +323,8 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
inode->i_gid = -2;
inode->i_blocks = 0;
memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
nfsi->write_io = 0;
nfsi->read_io = 0;
nfsi->read_cache_jiffies = fattr->time_start;
nfsi->attr_gencount = fattr->gencount;
......@@ -337,24 +335,19 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
if (fattr->valid & NFS_ATTR_FATTR_MTIME)
inode->i_mtime = fattr->mtime;
else if (nfs_server_capable(inode, NFS_CAP_MTIME))
nfsi->cache_validity |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_DATA;
nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (fattr->valid & NFS_ATTR_FATTR_CTIME)
inode->i_ctime = fattr->ctime;
else if (nfs_server_capable(inode, NFS_CAP_CTIME))
nfsi->cache_validity |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (fattr->valid & NFS_ATTR_FATTR_CHANGE)
inode->i_version = fattr->change_attr;
else if (nfs_server_capable(inode, NFS_CAP_CHANGE_ATTR))
nfsi->cache_validity |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_DATA;
nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (fattr->valid & NFS_ATTR_FATTR_SIZE)
inode->i_size = nfs_size_to_loff_t(fattr->size);
else
nfsi->cache_validity |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_DATA
| NFS_INO_REVAL_PAGECACHE;
if (fattr->valid & NFS_ATTR_FATTR_NLINK)
set_nlink(inode, fattr->nlink);
......@@ -363,15 +356,11 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
if (fattr->valid & NFS_ATTR_FATTR_OWNER)
inode->i_uid = fattr->uid;
else if (nfs_server_capable(inode, NFS_CAP_OWNER))
nfsi->cache_validity |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (fattr->valid & NFS_ATTR_FATTR_GROUP)
inode->i_gid = fattr->gid;
else if (nfs_server_capable(inode, NFS_CAP_OWNER_GROUP))
nfsi->cache_validity |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
inode->i_blocks = fattr->du.nfs2.blocks;
if (fattr->valid & NFS_ATTR_FATTR_SPACE_USED) {
......@@ -654,6 +643,7 @@ struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, fmode_t f
nfs_init_lock_context(&ctx->lock_context);
ctx->lock_context.open_context = ctx;
INIT_LIST_HEAD(&ctx->list);
ctx->mdsthreshold = NULL;
return ctx;
}
......@@ -682,6 +672,7 @@ static void __put_nfs_open_context(struct nfs_open_context *ctx, int is_sync)
put_rpccred(ctx->cred);
dput(ctx->dentry);
nfs_sb_deactive(sb);
kfree(ctx->mdsthreshold);
kfree(ctx);
}
......@@ -870,6 +861,15 @@ static int nfs_invalidate_mapping(struct inode *inode, struct address_space *map
return 0;
}
static bool nfs_mapping_need_revalidate_inode(struct inode *inode)
{
if (nfs_have_delegated_attributes(inode))
return false;
return (NFS_I(inode)->cache_validity & NFS_INO_REVAL_PAGECACHE)
|| nfs_attribute_timeout(inode)
|| NFS_STALE(inode);
}
/**
* nfs_revalidate_mapping - Revalidate the pagecache
* @inode - pointer to host inode
......@@ -880,9 +880,7 @@ int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
struct nfs_inode *nfsi = NFS_I(inode);
int ret = 0;
if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
|| nfs_attribute_cache_expired(inode)
|| NFS_STALE(inode)) {
if (nfs_mapping_need_revalidate_inode(inode)) {
ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (ret < 0)
goto out;
......@@ -948,6 +946,8 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
unsigned long invalid = 0;
if (nfs_have_delegated_attributes(inode))
return 0;
/* Has the inode gone and changed behind our back? */
if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid)
return -EIO;
......@@ -960,7 +960,7 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
/* Verify a few of the more important attributes */
if ((fattr->valid & NFS_ATTR_FATTR_MTIME) && !timespec_equal(&inode->i_mtime, &fattr->mtime))
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
invalid |= NFS_INO_INVALID_ATTR;
if (fattr->valid & NFS_ATTR_FATTR_SIZE) {
cur_size = i_size_read(inode);
......@@ -1279,14 +1279,26 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
nfs_display_fhandle_hash(NFS_FH(inode)),
atomic_read(&inode->i_count), fattr->valid);
if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid)
goto out_fileid;
if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid) {
printk(KERN_ERR "NFS: server %s error: fileid changed\n"
"fsid %s: expected fileid 0x%Lx, got 0x%Lx\n",
NFS_SERVER(inode)->nfs_client->cl_hostname,
inode->i_sb->s_id, (long long)nfsi->fileid,
(long long)fattr->fileid);
goto out_err;
}
/*
* Make sure the inode's type hasn't changed.
*/
if ((fattr->valid & NFS_ATTR_FATTR_TYPE) && (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
goto out_changed;
if ((fattr->valid & NFS_ATTR_FATTR_TYPE) && (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) {
/*
* Big trouble! The inode has become a different object.
*/
printk(KERN_DEBUG "NFS: %s: inode %ld mode changed, %07o to %07o\n",
__func__, inode->i_ino, inode->i_mode, fattr->mode);
goto out_err;
}
server = NFS_SERVER(inode);
/* Update the fsid? */
......@@ -1314,7 +1326,11 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if (inode->i_version != fattr->change_attr) {
dprintk("NFS: change_attr change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
invalid |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_DATA
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL
| NFS_INO_REVAL_PAGECACHE;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
inode->i_version = fattr->change_attr;
......@@ -1323,38 +1339,15 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
invalid |= save_cache_validity;
if (fattr->valid & NFS_ATTR_FATTR_MTIME) {
/* NFSv2/v3: Check if the mtime agrees */
if (!timespec_equal(&inode->i_mtime, &fattr->mtime)) {
dprintk("NFS: mtime change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
}
memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
} else if (server->caps & NFS_CAP_MTIME)
invalid |= save_cache_validity & (NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_DATA
| NFS_INO_REVAL_PAGECACHE
| NFS_INO_REVAL_FORCED);
if (fattr->valid & NFS_ATTR_FATTR_CTIME) {
/* If ctime has changed we should definitely clear access+acl caches */
if (!timespec_equal(&inode->i_ctime, &fattr->ctime)) {
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
/* and probably clear data for a directory too as utimes can cause
* havoc with our cache.
*/
if (S_ISDIR(inode->i_mode)) {
invalid |= NFS_INO_INVALID_DATA;
nfs_force_lookup_revalidate(inode);
}
memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
}
memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
} else if (server->caps & NFS_CAP_CTIME)
invalid |= save_cache_validity & (NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL
| NFS_INO_REVAL_FORCED);
/* Check if our cached file size is stale */
......@@ -1466,12 +1459,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
nfsi->cache_validity |= invalid;
return 0;
out_changed:
/*
* Big trouble! The inode has become a different object.
*/
printk(KERN_DEBUG "NFS: %s: inode %ld mode changed, %07o to %07o\n",
__func__, inode->i_ino, inode->i_mode, fattr->mode);
out_err:
/*
* No need to worry about unhashing the dentry, as the
......@@ -1480,13 +1467,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
*/
nfs_invalidate_inode(inode);
return -ESTALE;
out_fileid:
printk(KERN_ERR "NFS: server %s error: fileid changed\n"
"fsid %s: expected fileid 0x%Lx, got 0x%Lx\n",
NFS_SERVER(inode)->nfs_client->cl_hostname, inode->i_sb->s_id,
(long long)nfsi->fileid, (long long)fattr->fileid);
goto out_err;
}
......@@ -1547,7 +1527,7 @@ static inline void nfs4_init_once(struct nfs_inode *nfsi)
nfsi->delegation_state = 0;
init_rwsem(&nfsi->rwsem);
nfsi->layout = NULL;
atomic_set(&nfsi->commits_outstanding, 0);
atomic_set(&nfsi->commit_info.rpcs_out, 0);
#endif
}
......@@ -1559,9 +1539,9 @@ static void init_once(void *foo)
INIT_LIST_HEAD(&nfsi->open_files);
INIT_LIST_HEAD(&nfsi->access_cache_entry_lru);
INIT_LIST_HEAD(&nfsi->access_cache_inode_lru);
INIT_LIST_HEAD(&nfsi->commit_list);
INIT_LIST_HEAD(&nfsi->commit_info.list);
nfsi->npages = 0;
nfsi->ncommit = 0;
nfsi->commit_info.ncommit = 0;
atomic_set(&nfsi->silly_count, 1);
INIT_HLIST_HEAD(&nfsi->silly_list);
init_waitqueue_head(&nfsi->waitqueue);
......
fs/nfs/internal.h
浏览文件 @ 53f2c4a8
......@@ -103,6 +103,7 @@ struct nfs_parsed_mount_data {
unsigned int version;
unsigned int minorversion;
char *fscache_uniq;
bool need_mount;
struct {
struct sockaddr_storage address;
......@@ -167,11 +168,13 @@ extern struct nfs_server *nfs_clone_server(struct nfs_server *,
struct nfs_fh *,
struct nfs_fattr *,
rpc_authflavor_t);
extern int nfs_wait_client_init_complete(const struct nfs_client *clp);
extern void nfs_mark_client_ready(struct nfs_client *clp, int state);
extern int nfs4_check_client_ready(struct nfs_client *clp);
extern struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
const struct sockaddr *ds_addr,
int ds_addrlen, int ds_proto);
int ds_addrlen, int ds_proto,
unsigned int ds_timeo,
unsigned int ds_retrans);
#ifdef CONFIG_PROC_FS
extern int __init nfs_fs_proc_init(void);
extern void nfs_fs_proc_exit(void);
......@@ -185,21 +188,11 @@ static inline void nfs_fs_proc_exit(void)
}
#endif
/* nfs4namespace.c */
#ifdef CONFIG_NFS_V4
extern struct vfsmount *nfs_do_refmount(struct rpc_clnt *client, struct dentry *dentry);
#else
static inline
struct vfsmount *nfs_do_refmount(struct rpc_clnt *client, struct dentry *dentry)
{
return ERR_PTR(-ENOENT);
}
#endif
/* callback_xdr.c */
extern struct svc_version nfs4_callback_version1;
extern struct svc_version nfs4_callback_version4;
struct nfs_pageio_descriptor;
/* pagelist.c */
extern int __init nfs_init_nfspagecache(void);
extern void nfs_destroy_nfspagecache(void);
......@@ -210,9 +203,13 @@ extern void nfs_destroy_writepagecache(void);
extern int __init nfs_init_directcache(void);
extern void nfs_destroy_directcache(void);
extern bool nfs_pgarray_set(struct nfs_page_array *p, unsigned int pagecount);
extern void nfs_pgheader_init(struct nfs_pageio_descriptor *desc,
struct nfs_pgio_header *hdr,
void (*release)(struct nfs_pgio_header *hdr));
void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos);
/* nfs2xdr.c */
extern int nfs_stat_to_errno(enum nfs_stat);
extern struct rpc_procinfo nfs_procedures[];
extern int nfs2_decode_dirent(struct xdr_stream *,
struct nfs_entry *, int);
......@@ -237,14 +234,13 @@ extern const u32 nfs41_maxwrite_overhead;
extern struct rpc_procinfo nfs4_procedures[];
#endif
extern int nfs4_init_ds_session(struct nfs_client *clp);
extern int nfs4_init_ds_session(struct nfs_client *, unsigned long);
/* proc.c */
void nfs_close_context(struct nfs_open_context *ctx, int is_sync);
extern int nfs_init_client(struct nfs_client *clp,
extern struct nfs_client *nfs_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
const char *ip_addr, rpc_authflavor_t authflavour,
int noresvport);
const char *ip_addr, rpc_authflavor_t authflavour);
/* dir.c */
extern int nfs_access_cache_shrinker(struct shrinker *shrink,
......@@ -280,9 +276,10 @@ extern void nfs_sb_deactive(struct super_block *sb);
extern char *nfs_path(char **p, struct dentry *dentry,
char *buffer, ssize_t buflen);
extern struct vfsmount *nfs_d_automount(struct path *path);
#ifdef CONFIG_NFS_V4
rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *);
#endif
struct vfsmount *nfs_submount(struct nfs_server *, struct dentry *,
struct nfs_fh *, struct nfs_fattr *);
struct vfsmount *nfs_do_submount(struct dentry *, struct nfs_fh *,
struct nfs_fattr *, rpc_authflavor_t);
/* getroot.c */
extern struct dentry *nfs_get_root(struct super_block *, struct nfs_fh *,
......@@ -294,46 +291,73 @@ extern struct dentry *nfs4_get_root(struct super_block *, struct nfs_fh *,
extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh);
#endif
struct nfs_pageio_descriptor;
struct nfs_pgio_completion_ops;
/* read.c */
extern int nfs_initiate_read(struct nfs_read_data *data, struct rpc_clnt *clnt,
const struct rpc_call_ops *call_ops);
extern struct nfs_read_header *nfs_readhdr_alloc(void);
extern void nfs_readhdr_free(struct nfs_pgio_header *hdr);
extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
struct inode *inode,
const struct nfs_pgio_completion_ops *compl_ops);
extern int nfs_initiate_read(struct rpc_clnt *clnt,
struct nfs_read_data *data,
const struct rpc_call_ops *call_ops, int flags);
extern void nfs_read_prepare(struct rpc_task *task, void *calldata);
extern int nfs_generic_pagein(struct nfs_pageio_descriptor *desc,
struct list_head *head);
struct nfs_pgio_header *hdr);
extern void nfs_pageio_init_read_mds(struct nfs_pageio_descriptor *pgio,
struct inode *inode);
struct inode *inode,
const struct nfs_pgio_completion_ops *compl_ops);
extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio);
extern void nfs_readdata_release(struct nfs_read_data *rdata);
/* write.c */
extern void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
struct inode *inode, int ioflags,
const struct nfs_pgio_completion_ops *compl_ops);
extern struct nfs_write_header *nfs_writehdr_alloc(void);
extern void nfs_writehdr_free(struct nfs_pgio_header *hdr);
extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc,
struct list_head *head);
struct nfs_pgio_header *hdr);
extern void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio,
struct inode *inode, int ioflags);
struct inode *inode, int ioflags,
const struct nfs_pgio_completion_ops *compl_ops);
extern void nfs_pageio_reset_write_mds(struct nfs_pageio_descriptor *pgio);
extern void nfs_writedata_release(struct nfs_write_data *wdata);
extern void nfs_commit_free(struct nfs_write_data *p);
extern int nfs_initiate_write(struct nfs_write_data *data,
struct rpc_clnt *clnt,
extern void nfs_commit_free(struct nfs_commit_data *p);
extern int nfs_initiate_write(struct rpc_clnt *clnt,
struct nfs_write_data *data,
const struct rpc_call_ops *call_ops,
int how);
int how, int flags);
extern void nfs_write_prepare(struct rpc_task *task, void *calldata);
extern int nfs_initiate_commit(struct nfs_write_data *data,
struct rpc_clnt *clnt,
extern void nfs_commit_prepare(struct rpc_task *task, void *calldata);
extern int nfs_initiate_commit(struct rpc_clnt *clnt,
struct nfs_commit_data *data,
const struct rpc_call_ops *call_ops,
int how);
extern void nfs_init_commit(struct nfs_write_data *data,
int how, int flags);
extern void nfs_init_commit(struct nfs_commit_data *data,
struct list_head *head,
struct pnfs_layout_segment *lseg);
struct pnfs_layout_segment *lseg,
struct nfs_commit_info *cinfo);
int nfs_scan_commit_list(struct list_head *src, struct list_head *dst,
struct nfs_commit_info *cinfo, int max);
int nfs_scan_commit(struct inode *inode, struct list_head *dst,
struct nfs_commit_info *cinfo);
void nfs_mark_request_commit(struct nfs_page *req,
struct pnfs_layout_segment *lseg,
struct nfs_commit_info *cinfo);
int nfs_generic_commit_list(struct inode *inode, struct list_head *head,
int how, struct nfs_commit_info *cinfo);
void nfs_retry_commit(struct list_head *page_list,
struct pnfs_layout_segment *lseg);
void nfs_commit_clear_lock(struct nfs_inode *nfsi);
void nfs_commitdata_release(void *data);
void nfs_commit_release_pages(struct nfs_write_data *data);
void nfs_request_add_commit_list(struct nfs_page *req, struct list_head *head);
void nfs_request_remove_commit_list(struct nfs_page *req);
struct pnfs_layout_segment *lseg,
struct nfs_commit_info *cinfo);
void nfs_commitdata_release(struct nfs_commit_data *data);
void nfs_request_add_commit_list(struct nfs_page *req, struct list_head *dst,
struct nfs_commit_info *cinfo);
void nfs_request_remove_commit_list(struct nfs_page *req,
struct nfs_commit_info *cinfo);
void nfs_init_cinfo(struct nfs_commit_info *cinfo,
struct inode *inode,
struct nfs_direct_req *dreq);
#ifdef CONFIG_MIGRATION
extern int nfs_migrate_page(struct address_space *,
......@@ -342,15 +366,16 @@ extern int nfs_migrate_page(struct address_space *,
#define nfs_migrate_page NULL
#endif
/* direct.c */
void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
struct nfs_direct_req *dreq);
/* nfs4proc.c */
extern void __nfs4_read_done_cb(struct nfs_read_data *);
extern void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data);
extern int nfs4_init_client(struct nfs_client *clp,
extern struct nfs_client *nfs4_init_client(struct nfs_client *clp,
const struct rpc_timeout *timeparms,
const char *ip_addr,
rpc_authflavor_t authflavour,
int noresvport);
extern void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data);
rpc_authflavor_t authflavour);
extern int _nfs4_call_sync(struct rpc_clnt *clnt,
struct nfs_server *server,
struct rpc_message *msg,
......@@ -466,3 +491,15 @@ unsigned int nfs_page_array_len(unsigned int base, size_t len)
PAGE_SIZE - 1) >> PAGE_SHIFT;
}
/*
* Convert a struct timespec into a 64-bit change attribute
*
* This does approximately the same thing as timespec_to_ns(),
* but for calculation efficiency, we multiply the seconds by
* 1024*1024*1024.
*/
static inline
u64 nfs_timespec_to_change_attr(const struct timespec *ts)
{
return ((u64)ts->tv_sec << 30) + ts->tv_nsec;
}
fs/nfs/namespace.c
浏览文件 @ 53f2c4a8
......@@ -26,11 +26,6 @@ static LIST_HEAD(nfs_automount_list);
static DECLARE_DELAYED_WORK(nfs_automount_task, nfs_expire_automounts);
int nfs_mountpoint_expiry_timeout = 500 * HZ;
static struct vfsmount *nfs_do_submount(struct dentry *dentry,
struct nfs_fh *fh,
struct nfs_fattr *fattr,
rpc_authflavor_t authflavor);
/*
* nfs_path - reconstruct the path given an arbitrary dentry
* @base - used to return pointer to the end of devname part of path
......@@ -118,64 +113,6 @@ char *nfs_path(char **p, struct dentry *dentry, char *buffer, ssize_t buflen)
return ERR_PTR(-ENAMETOOLONG);
}
#ifdef CONFIG_NFS_V4
rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *flavors)
{
struct gss_api_mech *mech;
struct xdr_netobj oid;
int i;
rpc_authflavor_t pseudoflavor = RPC_AUTH_UNIX;
for (i = 0; i < flavors->num_flavors; i++) {
struct nfs4_secinfo_flavor *flavor;
flavor = &flavors->flavors[i];
if (flavor->flavor == RPC_AUTH_NULL || flavor->flavor == RPC_AUTH_UNIX) {
pseudoflavor = flavor->flavor;
break;
} else if (flavor->flavor == RPC_AUTH_GSS) {
oid.len = flavor->gss.sec_oid4.len;
oid.data = flavor->gss.sec_oid4.data;
mech = gss_mech_get_by_OID(&oid);
if (!mech)
continue;
pseudoflavor = gss_svc_to_pseudoflavor(mech, flavor->gss.service);
gss_mech_put(mech);
break;
}
}
return pseudoflavor;
}
static struct rpc_clnt *nfs_lookup_mountpoint(struct inode *dir,
struct qstr *name,
struct nfs_fh *fh,
struct nfs_fattr *fattr)
{
int err;
if (NFS_PROTO(dir)->version == 4)
return nfs4_proc_lookup_mountpoint(dir, name, fh, fattr);
err = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, name, fh, fattr);
if (err)
return ERR_PTR(err);
return rpc_clone_client(NFS_SERVER(dir)->client);
}
#else /* CONFIG_NFS_V4 */
static inline struct rpc_clnt *nfs_lookup_mountpoint(struct inode *dir,
struct qstr *name,
struct nfs_fh *fh,
struct nfs_fattr *fattr)
{
int err = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, name, fh, fattr);
if (err)
return ERR_PTR(err);
return rpc_clone_client(NFS_SERVER(dir)->client);
}
#endif /* CONFIG_NFS_V4 */
/*
* nfs_d_automount - Handle crossing a mountpoint on the server
* @path - The mountpoint
......@@ -191,10 +128,9 @@ static inline struct rpc_clnt *nfs_lookup_mountpoint(struct inode *dir,
struct vfsmount *nfs_d_automount(struct path *path)
{
struct vfsmount *mnt;
struct dentry *parent;
struct nfs_server *server = NFS_SERVER(path->dentry->d_inode);
struct nfs_fh *fh = NULL;
struct nfs_fattr *fattr = NULL;
struct rpc_clnt *client;
dprintk("--> nfs_d_automount()\n");
......@@ -210,21 +146,7 @@ struct vfsmount *nfs_d_automount(struct path *path)
dprintk("%s: enter\n", __func__);
/* Look it up again to get its attributes */
parent = dget_parent(path->dentry);
client = nfs_lookup_mountpoint(parent->d_inode, &path->dentry->d_name, fh, fattr);
dput(parent);
if (IS_ERR(client)) {
mnt = ERR_CAST(client);
goto out;
}
if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
mnt = nfs_do_refmount(client, path->dentry);
else
mnt = nfs_do_submount(path->dentry, fh, fattr, client->cl_auth->au_flavor);
rpc_shutdown_client(client);
mnt = server->nfs_client->rpc_ops->submount(server, path->dentry, fh, fattr);
if (IS_ERR(mnt))
goto out;
......@@ -297,10 +219,8 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
* @authflavor - security flavor to use when performing the mount
*
*/
static struct vfsmount *nfs_do_submount(struct dentry *dentry,
struct nfs_fh *fh,
struct nfs_fattr *fattr,
rpc_authflavor_t authflavor)
struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
struct nfs_fattr *fattr, rpc_authflavor_t authflavor)
{
struct nfs_clone_mount mountdata = {
.sb = dentry->d_sb,
......@@ -333,3 +253,18 @@ static struct vfsmount *nfs_do_submount(struct dentry *dentry,
dprintk("<-- nfs_do_submount() = %p\n", mnt);
return mnt;
}
struct vfsmount *nfs_submount(struct nfs_server *server, struct dentry *dentry,
struct nfs_fh *fh, struct nfs_fattr *fattr)
{
int err;
struct dentry *parent = dget_parent(dentry);
/* Look it up again to get its attributes */
err = server->nfs_client->rpc_ops->lookup(parent->d_inode, &dentry->d_name, fh, fattr);
dput(parent);
if (err != 0)
return ERR_PTR(err);
return nfs_do_submount(dentry, fh, fattr, server->client->cl_auth->au_flavor);
}
fs/nfs/netns.h
浏览文件 @ 53f2c4a8
/*
* NFS-private data for each "struct net". Accessed with net_generic().
*/
#ifndef __NFS_NETNS_H__
#define __NFS_NETNS_H__
......@@ -20,6 +24,7 @@ struct nfs_net {
struct idr cb_ident_idr; /* Protected by nfs_client_lock */
#endif
spinlock_t nfs_client_lock;
struct timespec boot_time;
};
extern int nfs_net_id;
......
fs/nfs/nfs2xdr.c
浏览文件 @ 53f2c4a8
......@@ -61,6 +61,7 @@
#define NFS_readdirres_sz (1)
#define NFS_statfsres_sz (1+NFS_info_sz)
static int nfs_stat_to_errno(enum nfs_stat);
/*
* While encoding arguments, set up the reply buffer in advance to
......@@ -313,6 +314,8 @@ static int decode_fattr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
p = xdr_decode_time(p, &fattr->atime);
p = xdr_decode_time(p, &fattr->mtime);
xdr_decode_time(p, &fattr->ctime);
fattr->change_attr = nfs_timespec_to_change_attr(&fattr->ctime);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
......@@ -1109,7 +1112,7 @@ static const struct {
* Returns a local errno value, or -EIO if the NFS status code is
* not recognized. This function is used jointly by NFSv2 and NFSv3.
*/
int nfs_stat_to_errno(enum nfs_stat status)
static int nfs_stat_to_errno(enum nfs_stat status)
{
int i;
......
fs/nfs/nfs3proc.c
浏览文件 @ 53f2c4a8
......@@ -142,7 +142,7 @@ nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
}
static int
nfs3_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name,
nfs3_proc_lookup(struct inode *dir, struct qstr *name,
struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
struct nfs3_diropargs arg = {
......@@ -810,11 +810,13 @@ nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
{
if (nfs3_async_handle_jukebox(task, data->inode))
struct inode *inode = data->header->inode;
if (nfs3_async_handle_jukebox(task, inode))
return -EAGAIN;
nfs_invalidate_atime(data->inode);
nfs_refresh_inode(data->inode, &data->fattr);
nfs_invalidate_atime(inode);
nfs_refresh_inode(inode, &data->fattr);
return 0;
}
......@@ -830,10 +832,12 @@ static void nfs3_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_da
static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
if (nfs3_async_handle_jukebox(task, data->inode))
struct inode *inode = data->header->inode;
if (nfs3_async_handle_jukebox(task, inode))
return -EAGAIN;
if (task->tk_status >= 0)
nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr);
nfs_post_op_update_inode_force_wcc(inode, data->res.fattr);
return 0;
}
......@@ -847,7 +851,12 @@ static void nfs3_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_
rpc_call_start(task);
}
static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
static void nfs3_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
{
rpc_call_start(task);
}
static int nfs3_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
{
if (nfs3_async_handle_jukebox(task, data->inode))
return -EAGAIN;
......@@ -855,7 +864,7 @@ static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
return 0;
}
static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
static void nfs3_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg)
{
msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
}
......@@ -875,6 +884,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
.file_inode_ops = &nfs3_file_inode_operations,
.file_ops = &nfs_file_operations,
.getroot = nfs3_proc_get_root,
.submount = nfs_submount,
.getattr = nfs3_proc_getattr,
.setattr = nfs3_proc_setattr,
.lookup = nfs3_proc_lookup,
......@@ -906,6 +916,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
.write_rpc_prepare = nfs3_proc_write_rpc_prepare,
.write_done = nfs3_write_done,
.commit_setup = nfs3_proc_commit_setup,
.commit_rpc_prepare = nfs3_proc_commit_rpc_prepare,
.commit_done = nfs3_commit_done,
.lock = nfs3_proc_lock,
.clear_acl_cache = nfs3_forget_cached_acls,
......
fs/nfs/nfs3xdr.c
浏览文件 @ 53f2c4a8
......@@ -86,6 +86,8 @@
XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE))
#define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz)
static int nfs3_stat_to_errno(enum nfs_stat);
/*
* Map file type to S_IFMT bits
*/
......@@ -675,6 +677,7 @@ static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr)
p = xdr_decode_nfstime3(p, &fattr->atime);
p = xdr_decode_nfstime3(p, &fattr->mtime);
xdr_decode_nfstime3(p, &fattr->ctime);
fattr->change_attr = nfs_timespec_to_change_attr(&fattr->ctime);
fattr->valid |= NFS_ATTR_FATTR_V3;
return 0;
......@@ -725,12 +728,14 @@ static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
goto out_overflow;
fattr->valid |= NFS_ATTR_FATTR_PRESIZE
| NFS_ATTR_FATTR_PRECHANGE
| NFS_ATTR_FATTR_PREMTIME
| NFS_ATTR_FATTR_PRECTIME;
p = xdr_decode_size3(p, &fattr->pre_size);
p = xdr_decode_nfstime3(p, &fattr->pre_mtime);
xdr_decode_nfstime3(p, &fattr->pre_ctime);
fattr->pre_change_attr = nfs_timespec_to_change_attr(&fattr->pre_ctime);
return 0;
out_overflow:
......@@ -1287,7 +1292,7 @@ static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req,
* };
*/
static void encode_commit3args(struct xdr_stream *xdr,
const struct nfs_writeargs *args)
const struct nfs_commitargs *args)
{
__be32 *p;
......@@ -1300,7 +1305,7 @@ static void encode_commit3args(struct xdr_stream *xdr,
static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req,
struct xdr_stream *xdr,
const struct nfs_writeargs *args)
const struct nfs_commitargs *args)
{
encode_commit3args(xdr, args);
}
......@@ -1385,7 +1390,7 @@ static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req,
out:
return error;
out_default:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -1424,7 +1429,7 @@ static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req,
out:
return error;
out_status:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -1472,7 +1477,7 @@ static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req,
error = decode_post_op_attr(xdr, result->dir_attr);
if (unlikely(error))
goto out;
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -1513,7 +1518,7 @@ static int nfs3_xdr_dec_access3res(struct rpc_rqst *req,
out:
return error;
out_default:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -1554,7 +1559,7 @@ static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req,
out:
return error;
out_default:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -1636,7 +1641,7 @@ static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr,
out:
return error;
out_status:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -1706,7 +1711,7 @@ static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr,
out:
return error;
out_status:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -1770,7 +1775,7 @@ static int nfs3_xdr_dec_create3res(struct rpc_rqst *req,
error = decode_wcc_data(xdr, result->dir_attr);
if (unlikely(error))
goto out;
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -1809,7 +1814,7 @@ static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req,
out:
return error;
out_status:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -1853,7 +1858,7 @@ static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req,
out:
return error;
out_status:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -1896,7 +1901,7 @@ static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr,
out:
return error;
out_status:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/**
......@@ -2088,7 +2093,7 @@ static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req,
error = decode_post_op_attr(xdr, result->dir_attr);
if (unlikely(error))
goto out;
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -2156,7 +2161,7 @@ static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req,
out:
return error;
out_status:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -2232,7 +2237,7 @@ static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req,
out:
return error;
out_status:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -2295,7 +2300,7 @@ static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req,
out:
return error;
out_status:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
/*
......@@ -2319,7 +2324,7 @@ static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req,
*/
static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req,
struct xdr_stream *xdr,
struct nfs_writeres *result)
struct nfs_commitres *result)
{
enum nfs_stat status;
int error;
......@@ -2336,7 +2341,7 @@ static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req,
out:
return error;
out_status:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
#ifdef CONFIG_NFS_V3_ACL
......@@ -2401,7 +2406,7 @@ static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req,
out:
return error;
out_default:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req,
......@@ -2420,11 +2425,76 @@ static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req,
out:
return error;
out_default:
return nfs_stat_to_errno(status);
return nfs3_stat_to_errno(status);
}
#endif /* CONFIG_NFS_V3_ACL */
/*
* We need to translate between nfs status return values and
* the local errno values which may not be the same.
*/
static const struct {
int stat;
int errno;
} nfs_errtbl[] = {
{ NFS_OK, 0 },
{ NFSERR_PERM, -EPERM },
{ NFSERR_NOENT, -ENOENT },
{ NFSERR_IO, -errno_NFSERR_IO},
{ NFSERR_NXIO, -ENXIO },
/* { NFSERR_EAGAIN, -EAGAIN }, */
{ NFSERR_ACCES, -EACCES },
{ NFSERR_EXIST, -EEXIST },
{ NFSERR_XDEV, -EXDEV },
{ NFSERR_NODEV, -ENODEV },
{ NFSERR_NOTDIR, -ENOTDIR },
{ NFSERR_ISDIR, -EISDIR },
{ NFSERR_INVAL, -EINVAL },
{ NFSERR_FBIG, -EFBIG },
{ NFSERR_NOSPC, -ENOSPC },
{ NFSERR_ROFS, -EROFS },
{ NFSERR_MLINK, -EMLINK },
{ NFSERR_NAMETOOLONG, -ENAMETOOLONG },
{ NFSERR_NOTEMPTY, -ENOTEMPTY },
{ NFSERR_DQUOT, -EDQUOT },
{ NFSERR_STALE, -ESTALE },
{ NFSERR_REMOTE, -EREMOTE },
#ifdef EWFLUSH
{ NFSERR_WFLUSH, -EWFLUSH },
#endif
{ NFSERR_BADHANDLE, -EBADHANDLE },
{ NFSERR_NOT_SYNC, -ENOTSYNC },
{ NFSERR_BAD_COOKIE, -EBADCOOKIE },
{ NFSERR_NOTSUPP, -ENOTSUPP },
{ NFSERR_TOOSMALL, -ETOOSMALL },
{ NFSERR_SERVERFAULT, -EREMOTEIO },
{ NFSERR_BADTYPE, -EBADTYPE },
{ NFSERR_JUKEBOX, -EJUKEBOX },
{ -1, -EIO }
};
/**
* nfs3_stat_to_errno - convert an NFS status code to a local errno
* @status: NFS status code to convert
*
* Returns a local errno value, or -EIO if the NFS status code is
* not recognized. This function is used jointly by NFSv2 and NFSv3.
*/
static int nfs3_stat_to_errno(enum nfs_stat status)
{
int i;
for (i = 0; nfs_errtbl[i].stat != -1; i++) {
if (nfs_errtbl[i].stat == (int)status)
return nfs_errtbl[i].errno;
}
dprintk("NFS: Unrecognized nfs status value: %u\n", status);
return nfs_errtbl[i].errno;
}
#define PROC(proc, argtype, restype, timer) \
[NFS3PROC_##proc] = { \
.p_proc = NFS3PROC_##proc, \
......
fs/nfs/nfs4_fs.h
浏览文件 @ 53f2c4a8
......@@ -24,6 +24,8 @@ enum nfs4_client_state {
NFS4CLNT_RECALL_SLOT,
NFS4CLNT_LEASE_CONFIRM,
NFS4CLNT_SERVER_SCOPE_MISMATCH,
NFS4CLNT_PURGE_STATE,
NFS4CLNT_BIND_CONN_TO_SESSION,
};
enum nfs4_session_state {
......@@ -52,11 +54,6 @@ struct nfs4_minor_version_ops {
const struct nfs4_state_maintenance_ops *state_renewal_ops;
};
struct nfs_unique_id {
struct rb_node rb_node;
__u64 id;
};
#define NFS_SEQID_CONFIRMED 1
struct nfs_seqid_counter {
ktime_t create_time;
......@@ -206,12 +203,18 @@ extern const struct dentry_operations nfs4_dentry_operations;
extern const struct inode_operations nfs4_dir_inode_operations;
/* nfs4namespace.c */
rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *);
struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *);
struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *,
struct nfs_fh *, struct nfs_fattr *);
/* nfs4proc.c */
extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *);
extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *);
extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, struct rpc_cred *cred);
extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred);
extern int nfs4_destroy_clientid(struct nfs_client *clp);
extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);
extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc);
......@@ -239,8 +242,8 @@ extern int nfs41_setup_sequence(struct nfs4_session *session,
struct rpc_task *task);
extern void nfs4_destroy_session(struct nfs4_session *session);
extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp);
extern int nfs4_proc_create_session(struct nfs_client *);
extern int nfs4_proc_destroy_session(struct nfs4_session *);
extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *);
extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *);
extern int nfs4_init_session(struct nfs_server *server);
extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
struct nfs_fsinfo *fsinfo);
......@@ -310,9 +313,9 @@ struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp);
#if defined(CONFIG_NFS_V4_1)
struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp);
struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp);
extern void nfs4_schedule_session_recovery(struct nfs4_session *);
extern void nfs4_schedule_session_recovery(struct nfs4_session *, int);
#else
static inline void nfs4_schedule_session_recovery(struct nfs4_session *session)
static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err)
{
}
#endif /* CONFIG_NFS_V4_1 */
......@@ -334,7 +337,7 @@ extern void nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs
extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags);
extern void nfs41_handle_recall_slot(struct nfs_client *clp);
extern void nfs41_handle_server_scope(struct nfs_client *,
struct server_scope **);
struct nfs41_server_scope **);
extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl);
extern void nfs4_select_rw_stateid(nfs4_stateid *, struct nfs4_state *,
......
fs/nfs/nfs4filelayout.c
浏览文件 @ 53f2c4a8
此差异已折叠。
fs/nfs/nfs4filelayout.h
浏览文件 @ 53f2c4a8
......@@ -32,6 +32,13 @@
#include "pnfs.h"
/*
* Default data server connection timeout and retrans vaules.
* Set by module paramters dataserver_timeo and dataserver_retrans.
*/
#define NFS4_DEF_DS_TIMEO 60
#define NFS4_DEF_DS_RETRANS 5
/*
* Field testing shows we need to support up to 4096 stripe indices.
* We store each index as a u8 (u32 on the wire) to keep the memory footprint
......@@ -41,6 +48,9 @@
#define NFS4_PNFS_MAX_STRIPE_CNT 4096
#define NFS4_PNFS_MAX_MULTI_CNT 256 /* 256 fit into a u8 stripe_index */
/* error codes for internal use */
#define NFS4ERR_RESET_TO_MDS 12001
enum stripetype4 {
STRIPE_SPARSE = 1,
STRIPE_DENSE = 2
......@@ -62,23 +72,14 @@ struct nfs4_pnfs_ds {
atomic_t ds_count;
};
/* nfs4_file_layout_dsaddr flags */
#define NFS4_DEVICE_ID_NEG_ENTRY 0x00000001
struct nfs4_file_layout_dsaddr {
struct nfs4_deviceid_node id_node;
unsigned long flags;
u32 stripe_count;
u8 *stripe_indices;
u32 ds_num;
struct nfs4_pnfs_ds *ds_list[1];
};
struct nfs4_fl_commit_bucket {
struct list_head written;
struct list_head committing;
};
struct nfs4_filelayout_segment {
struct pnfs_layout_segment generic_hdr;
u32 stripe_type;
......@@ -89,10 +90,19 @@ struct nfs4_filelayout_segment {
struct nfs4_file_layout_dsaddr *dsaddr; /* Point to GETDEVINFO data */
unsigned int num_fh;
struct nfs_fh **fh_array;
struct nfs4_fl_commit_bucket *commit_buckets; /* Sort commits to ds */
int number_of_buckets;
};
struct nfs4_filelayout {
struct pnfs_layout_hdr generic_hdr;
struct pnfs_ds_commit_info commit_info;
};
static inline struct nfs4_filelayout *
FILELAYOUT_FROM_HDR(struct pnfs_layout_hdr *lo)
{
return container_of(lo, struct nfs4_filelayout, generic_hdr);
}
static inline struct nfs4_filelayout_segment *
FILELAYOUT_LSEG(struct pnfs_layout_segment *lseg)
{
......@@ -107,6 +117,36 @@ FILELAYOUT_DEVID_NODE(struct pnfs_layout_segment *lseg)
return &FILELAYOUT_LSEG(lseg)->dsaddr->id_node;
}
static inline void
filelayout_mark_devid_invalid(struct nfs4_deviceid_node *node)
{
u32 *p = (u32 *)&node->deviceid;
printk(KERN_WARNING "NFS: Deviceid [%x%x%x%x] marked out of use.\n",
p[0], p[1], p[2], p[3]);
set_bit(NFS_DEVICEID_INVALID, &node->flags);
}
static inline bool
filelayout_test_layout_invalid(struct pnfs_layout_hdr *lo)
{
return test_bit(NFS_LAYOUT_INVALID, &lo->plh_flags);
}
static inline bool
filelayout_test_devid_invalid(struct nfs4_deviceid_node *node)
{
return test_bit(NFS_DEVICEID_INVALID, &node->flags);
}
static inline bool
filelayout_reset_to_mds(struct pnfs_layout_segment *lseg)
{
return filelayout_test_devid_invalid(FILELAYOUT_DEVID_NODE(lseg)) ||
filelayout_test_layout_invalid(lseg->pls_layout);
}
extern struct nfs_fh *
nfs4_fl_select_ds_fh(struct pnfs_layout_segment *lseg, u32 j);
......@@ -119,5 +159,6 @@ extern void nfs4_fl_put_deviceid(struct nfs4_file_layout_dsaddr *dsaddr);
extern void nfs4_fl_free_deviceid(struct nfs4_file_layout_dsaddr *dsaddr);
struct nfs4_file_layout_dsaddr *
get_device_info(struct inode *inode, struct nfs4_deviceid *dev_id, gfp_t gfp_flags);
void nfs4_ds_disconnect(struct nfs_client *clp);
#endif /* FS_NFS_NFS4FILELAYOUT_H */
fs/nfs/nfs4filelayoutdev.c
浏览文件 @ 53f2c4a8
......@@ -30,12 +30,16 @@
#include <linux/nfs_fs.h>
#include <linux/vmalloc.h>
#include <linux/module.h>
#include "internal.h"
#include "nfs4filelayout.h"
#define NFSDBG_FACILITY NFSDBG_PNFS_LD
static unsigned int dataserver_timeo = NFS4_DEF_DS_TIMEO;
static unsigned int dataserver_retrans = NFS4_DEF_DS_RETRANS;
/*
* Data server cache
*
......@@ -144,6 +148,28 @@ _data_server_lookup_locked(const struct list_head *dsaddrs)
return NULL;
}
/*
* Lookup DS by nfs_client pointer. Zero data server client pointer
*/
void nfs4_ds_disconnect(struct nfs_client *clp)
{
struct nfs4_pnfs_ds *ds;
struct nfs_client *found = NULL;
dprintk("%s clp %p\n", __func__, clp);
spin_lock(&nfs4_ds_cache_lock);
list_for_each_entry(ds, &nfs4_data_server_cache, ds_node)
if (ds->ds_clp && ds->ds_clp == clp) {
found = ds->ds_clp;
ds->ds_clp = NULL;
}
spin_unlock(&nfs4_ds_cache_lock);
if (found) {
set_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state);
nfs_put_client(clp);
}
}
/*
* Create an rpc connection to the nfs4_pnfs_ds data server
* Currently only supports IPv4 and IPv6 addresses
......@@ -165,8 +191,9 @@ nfs4_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds)
__func__, ds->ds_remotestr, da->da_remotestr);
clp = nfs4_set_ds_client(mds_srv->nfs_client,
(struct sockaddr *)&da->da_addr,
da->da_addrlen, IPPROTO_TCP);
(struct sockaddr *)&da->da_addr,
da->da_addrlen, IPPROTO_TCP,
dataserver_timeo, dataserver_retrans);
if (!IS_ERR(clp))
break;
}
......@@ -176,28 +203,7 @@ nfs4_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds)
goto out;
}
if ((clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) != 0) {
if (!is_ds_client(clp)) {
status = -ENODEV;
goto out_put;
}
ds->ds_clp = clp;
dprintk("%s [existing] server=%s\n", __func__,
ds->ds_remotestr);
goto out;
}
/*
* Do not set NFS_CS_CHECK_LEASE_TIME instead set the DS lease to
* be equal to the MDS lease. Renewal is scheduled in create_session.
*/
spin_lock(&mds_srv->nfs_client->cl_lock);
clp->cl_lease_time = mds_srv->nfs_client->cl_lease_time;
spin_unlock(&mds_srv->nfs_client->cl_lock);
clp->cl_last_renewal = jiffies;
/* New nfs_client */
status = nfs4_init_ds_session(clp);
status = nfs4_init_ds_session(clp, mds_srv->nfs_client->cl_lease_time);
if (status)
goto out_put;
......@@ -602,7 +608,7 @@ decode_device(struct inode *ino, struct pnfs_device *pdev, gfp_t gfp_flags)
mp_count = be32_to_cpup(p); /* multipath count */
for (j = 0; j < mp_count; j++) {
da = decode_ds_addr(NFS_SERVER(ino)->nfs_client->net,
da = decode_ds_addr(NFS_SERVER(ino)->nfs_client->cl_net,
&stream, gfp_flags);
if (da)
list_add_tail(&da->da_node, &dsaddrs);
......@@ -791,48 +797,42 @@ nfs4_fl_select_ds_fh(struct pnfs_layout_segment *lseg, u32 j)
return flseg->fh_array[i];
}
static void
filelayout_mark_devid_negative(struct nfs4_file_layout_dsaddr *dsaddr,
int err, const char *ds_remotestr)
{
u32 *p = (u32 *)&dsaddr->id_node.deviceid;
printk(KERN_ERR "NFS: data server %s connection error %d."
" Deviceid [%x%x%x%x] marked out of use.\n",
ds_remotestr, err, p[0], p[1], p[2], p[3]);
spin_lock(&nfs4_ds_cache_lock);
dsaddr->flags |= NFS4_DEVICE_ID_NEG_ENTRY;
spin_unlock(&nfs4_ds_cache_lock);
}
struct nfs4_pnfs_ds *
nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx)
{
struct nfs4_file_layout_dsaddr *dsaddr = FILELAYOUT_LSEG(lseg)->dsaddr;
struct nfs4_pnfs_ds *ds = dsaddr->ds_list[ds_idx];
struct nfs4_deviceid_node *devid = FILELAYOUT_DEVID_NODE(lseg);
if (filelayout_test_devid_invalid(devid))
return NULL;
if (ds == NULL) {
printk(KERN_ERR "NFS: %s: No data server for offset index %d\n",
__func__, ds_idx);
return NULL;
goto mark_dev_invalid;
}
if (!ds->ds_clp) {
struct nfs_server *s = NFS_SERVER(lseg->pls_layout->plh_inode);
int err;
if (dsaddr->flags & NFS4_DEVICE_ID_NEG_ENTRY) {
/* Already tried to connect, don't try again */
dprintk("%s Deviceid marked out of use\n", __func__);
return NULL;
}
err = nfs4_ds_connect(s, ds);
if (err) {
filelayout_mark_devid_negative(dsaddr, err,
ds->ds_remotestr);
return NULL;
}
if (err)
goto mark_dev_invalid;
}
return ds;
mark_dev_invalid:
filelayout_mark_devid_invalid(devid);
return NULL;
}
module_param(dataserver_retrans, uint, 0644);
MODULE_PARM_DESC(dataserver_retrans, "The number of times the NFSv4.1 client "
"retries a request before it attempts further "
" recovery action.");
module_param(dataserver_timeo, uint, 0644);
MODULE_PARM_DESC(dataserver_timeo, "The time (in tenths of a second) the "
"NFSv4.1 client waits for a response from a "
" data server before it retries an NFS request.");
fs/nfs/nfs4namespace.c
浏览文件 @ 53f2c4a8
......@@ -132,6 +132,35 @@ static size_t nfs_parse_server_name(char *string, size_t len,
return ret;
}
rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *flavors)
{
struct gss_api_mech *mech;
struct xdr_netobj oid;
int i;
rpc_authflavor_t pseudoflavor = RPC_AUTH_UNIX;
for (i = 0; i < flavors->num_flavors; i++) {
struct nfs4_secinfo_flavor *flavor;
flavor = &flavors->flavors[i];
if (flavor->flavor == RPC_AUTH_NULL || flavor->flavor == RPC_AUTH_UNIX) {
pseudoflavor = flavor->flavor;
break;
} else if (flavor->flavor == RPC_AUTH_GSS) {
oid.len = flavor->gss.sec_oid4.len;
oid.data = flavor->gss.sec_oid4.data;
mech = gss_mech_get_by_OID(&oid);
if (!mech)
continue;
pseudoflavor = gss_svc_to_pseudoflavor(mech, flavor->gss.service);
gss_mech_put(mech);
break;
}
}
return pseudoflavor;
}
static rpc_authflavor_t nfs4_negotiate_security(struct inode *inode, struct qstr *name)
{
struct page *page;
......@@ -168,7 +197,7 @@ struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *clnt, struct inode *ino
rpc_authflavor_t flavor;
flavor = nfs4_negotiate_security(inode, name);
if (flavor < 0)
if ((int)flavor < 0)
return ERR_PTR(flavor);
clone = rpc_clone_client(clnt);
......@@ -300,7 +329,7 @@ static struct vfsmount *nfs_follow_referral(struct dentry *dentry,
* @dentry - dentry of referral
*
*/
struct vfsmount *nfs_do_refmount(struct rpc_clnt *client, struct dentry *dentry)
static struct vfsmount *nfs_do_refmount(struct rpc_clnt *client, struct dentry *dentry)
{
struct vfsmount *mnt = ERR_PTR(-ENOMEM);
struct dentry *parent;
......@@ -341,3 +370,25 @@ struct vfsmount *nfs_do_refmount(struct rpc_clnt *client, struct dentry *dentry)
dprintk("%s: done\n", __func__);
return mnt;
}
struct vfsmount *nfs4_submount(struct nfs_server *server, struct dentry *dentry,
struct nfs_fh *fh, struct nfs_fattr *fattr)
{
struct dentry *parent = dget_parent(dentry);
struct rpc_clnt *client;
struct vfsmount *mnt;
/* Look it up again to get its attributes and sec flavor */
client = nfs4_proc_lookup_mountpoint(parent->d_inode, &dentry->d_name, fh, fattr);
dput(parent);
if (IS_ERR(client))
return ERR_CAST(client);
if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
mnt = nfs_do_refmount(client, dentry);
else
mnt = nfs_do_submount(dentry, fh, fattr, client->cl_auth->au_flavor);
rpc_shutdown_client(client);
return mnt;
}
fs/nfs/nfs4proc.c
浏览文件 @ 53f2c4a8
此差异已折叠。
fs/nfs/nfs4renewd.c
浏览文件 @ 53f2c4a8
......@@ -49,7 +49,7 @@
#include "nfs4_fs.h"
#include "delegation.h"
#define NFSDBG_FACILITY NFSDBG_PROC
#define NFSDBG_FACILITY NFSDBG_STATE
void
nfs4_renew_state(struct work_struct *work)
......
fs/nfs/nfs4state.c
浏览文件 @ 53f2c4a8
此差异已折叠。
fs/nfs/nfs4xdr.c
浏览文件 @ 53f2c4a8
此差异已折叠。
fs/nfs/objlayout/objio_osd.c
浏览文件 @ 53f2c4a8
......@@ -211,7 +211,7 @@ static void copy_single_comp(struct ore_components *oc, unsigned c,
memcpy(ocomp->cred, src_comp->oc_cap.cred, sizeof(ocomp->cred));
}
int __alloc_objio_seg(unsigned numdevs, gfp_t gfp_flags,
static int __alloc_objio_seg(unsigned numdevs, gfp_t gfp_flags,
struct objio_segment **pseg)
{
/* This is the in memory structure of the objio_segment
......@@ -440,11 +440,12 @@ static void _read_done(struct ore_io_state *ios, void *private)
int objio_read_pagelist(struct nfs_read_data *rdata)
{
struct nfs_pgio_header *hdr = rdata->header;
struct objio_state *objios;
int ret;
ret = objio_alloc_io_state(NFS_I(rdata->inode)->layout, true,
rdata->lseg, rdata->args.pages, rdata->args.pgbase,
ret = objio_alloc_io_state(NFS_I(hdr->inode)->layout, true,
hdr->lseg, rdata->args.pages, rdata->args.pgbase,
rdata->args.offset, rdata->args.count, rdata,
GFP_KERNEL, &objios);
if (unlikely(ret))
......@@ -483,12 +484,12 @@ static struct page *__r4w_get_page(void *priv, u64 offset, bool *uptodate)
{
struct objio_state *objios = priv;
struct nfs_write_data *wdata = objios->oir.rpcdata;
struct address_space *mapping = wdata->header->inode->i_mapping;
pgoff_t index = offset / PAGE_SIZE;
struct page *page = find_get_page(wdata->inode->i_mapping, index);
struct page *page = find_get_page(mapping, index);
if (!page) {
page = find_or_create_page(wdata->inode->i_mapping,
index, GFP_NOFS);
page = find_or_create_page(mapping, index, GFP_NOFS);
if (unlikely(!page)) {
dprintk("%s: grab_cache_page Failed index=0x%lx\n",
__func__, index);
......@@ -518,11 +519,12 @@ static const struct _ore_r4w_op _r4w_op = {
int objio_write_pagelist(struct nfs_write_data *wdata, int how)
{
struct nfs_pgio_header *hdr = wdata->header;
struct objio_state *objios;
int ret;
ret = objio_alloc_io_state(NFS_I(wdata->inode)->layout, false,
wdata->lseg, wdata->args.pages, wdata->args.pgbase,
ret = objio_alloc_io_state(NFS_I(hdr->inode)->layout, false,
hdr->lseg, wdata->args.pages, wdata->args.pgbase,
wdata->args.offset, wdata->args.count, wdata, GFP_NOFS,
&objios);
if (unlikely(ret))
......
fs/nfs/objlayout/objlayout.c
浏览文件 @ 53f2c4a8
......@@ -258,7 +258,7 @@ objlayout_read_done(struct objlayout_io_res *oir, ssize_t status, bool sync)
if (status >= 0)
rdata->res.count = status;
else
rdata->pnfs_error = status;
rdata->header->pnfs_error = status;
objlayout_iodone(oir);
/* must not use oir after this point */
......@@ -279,12 +279,14 @@ objlayout_read_done(struct objlayout_io_res *oir, ssize_t status, bool sync)
enum pnfs_try_status
objlayout_read_pagelist(struct nfs_read_data *rdata)
{
struct nfs_pgio_header *hdr = rdata->header;
struct inode *inode = hdr->inode;
loff_t offset = rdata->args.offset;
size_t count = rdata->args.count;
int err;
loff_t eof;
eof = i_size_read(rdata->inode);
eof = i_size_read(inode);
if (unlikely(offset + count > eof)) {
if (offset >= eof) {
err = 0;
......@@ -297,17 +299,17 @@ objlayout_read_pagelist(struct nfs_read_data *rdata)
}
rdata->res.eof = (offset + count) >= eof;
_fix_verify_io_params(rdata->lseg, &rdata->args.pages,
_fix_verify_io_params(hdr->lseg, &rdata->args.pages,
&rdata->args.pgbase,
rdata->args.offset, rdata->args.count);
dprintk("%s: inode(%lx) offset 0x%llx count 0x%Zx eof=%d\n",
__func__, rdata->inode->i_ino, offset, count, rdata->res.eof);
__func__, inode->i_ino, offset, count, rdata->res.eof);
err = objio_read_pagelist(rdata);
out:
if (unlikely(err)) {
rdata->pnfs_error = err;
hdr->pnfs_error = err;
dprintk("%s: Returned Error %d\n", __func__, err);
return PNFS_NOT_ATTEMPTED;
}
......@@ -340,7 +342,7 @@ objlayout_write_done(struct objlayout_io_res *oir, ssize_t status, bool sync)
wdata->res.count = status;
wdata->verf.committed = oir->committed;
} else {
wdata->pnfs_error = status;
wdata->header->pnfs_error = status;
}
objlayout_iodone(oir);
/* must not use oir after this point */
......@@ -363,15 +365,16 @@ enum pnfs_try_status
objlayout_write_pagelist(struct nfs_write_data *wdata,
int how)
{
struct nfs_pgio_header *hdr = wdata->header;
int err;
_fix_verify_io_params(wdata->lseg, &wdata->args.pages,
_fix_verify_io_params(hdr->lseg, &wdata->args.pages,
&wdata->args.pgbase,
wdata->args.offset, wdata->args.count);
err = objio_write_pagelist(wdata, how);
if (unlikely(err)) {
wdata->pnfs_error = err;
hdr->pnfs_error = err;
dprintk("%s: Returned Error %d\n", __func__, err);
return PNFS_NOT_ATTEMPTED;
}
......
fs/nfs/pagelist.c
浏览文件 @ 53f2c4a8
......@@ -26,6 +26,47 @@
static struct kmem_cache *nfs_page_cachep;
bool nfs_pgarray_set(struct nfs_page_array *p, unsigned int pagecount)
{
p->npages = pagecount;
if (pagecount <= ARRAY_SIZE(p->page_array))
p->pagevec = p->page_array;
else {
p->pagevec = kcalloc(pagecount, sizeof(struct page *), GFP_KERNEL);
if (!p->pagevec)
p->npages = 0;
}
return p->pagevec != NULL;
}
void nfs_pgheader_init(struct nfs_pageio_descriptor *desc,
struct nfs_pgio_header *hdr,
void (*release)(struct nfs_pgio_header *hdr))
{
hdr->req = nfs_list_entry(desc->pg_list.next);
hdr->inode = desc->pg_inode;
hdr->cred = hdr->req->wb_context->cred;
hdr->io_start = req_offset(hdr->req);
hdr->good_bytes = desc->pg_count;
hdr->dreq = desc->pg_dreq;
hdr->release = release;
hdr->completion_ops = desc->pg_completion_ops;
if (hdr->completion_ops->init_hdr)
hdr->completion_ops->init_hdr(hdr);
}
void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos)
{
spin_lock(&hdr->lock);
if (pos < hdr->io_start + hdr->good_bytes) {
set_bit(NFS_IOHDR_ERROR, &hdr->flags);
clear_bit(NFS_IOHDR_EOF, &hdr->flags);
hdr->good_bytes = pos - hdr->io_start;
hdr->error = error;
}
spin_unlock(&hdr->lock);
}
static inline struct nfs_page *
nfs_page_alloc(void)
{
......@@ -76,12 +117,8 @@ nfs_create_request(struct nfs_open_context *ctx, struct inode *inode,
* long write-back delay. This will be adjusted in
* update_nfs_request below if the region is not locked. */
req->wb_page = page;
atomic_set(&req->wb_complete, 0);
req->wb_index = page->index;
page_cache_get(page);
BUG_ON(PagePrivate(page));
BUG_ON(!PageLocked(page));
BUG_ON(page->mapping->host != inode);
req->wb_offset = offset;
req->wb_pgbase = offset;
req->wb_bytes = count;
......@@ -104,6 +141,15 @@ void nfs_unlock_request(struct nfs_page *req)
clear_bit(PG_BUSY, &req->wb_flags);
smp_mb__after_clear_bit();
wake_up_bit(&req->wb_flags, PG_BUSY);
}
/**
* nfs_unlock_and_release_request - Unlock request and release the nfs_page
* @req:
*/
void nfs_unlock_and_release_request(struct nfs_page *req)
{
nfs_unlock_request(req);
nfs_release_request(req);
}
......@@ -203,6 +249,7 @@ EXPORT_SYMBOL_GPL(nfs_generic_pg_test);
void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
struct inode *inode,
const struct nfs_pageio_ops *pg_ops,
const struct nfs_pgio_completion_ops *compl_ops,
size_t bsize,
int io_flags)
{
......@@ -215,9 +262,11 @@ void nfs_pageio_init(struct nfs_pageio_descriptor *desc,
desc->pg_recoalesce = 0;
desc->pg_inode = inode;
desc->pg_ops = pg_ops;
desc->pg_completion_ops = compl_ops;
desc->pg_ioflags = io_flags;
desc->pg_error = 0;
desc->pg_lseg = NULL;
desc->pg_dreq = NULL;
}
/**
......@@ -241,12 +290,12 @@ static bool nfs_can_coalesce_requests(struct nfs_page *prev,
return false;
if (req->wb_context->state != prev->wb_context->state)
return false;
if (req->wb_index != (prev->wb_index + 1))
return false;
if (req->wb_pgbase != 0)
return false;
if (prev->wb_pgbase + prev->wb_bytes != PAGE_CACHE_SIZE)
return false;
if (req_offset(req) != req_offset(prev) + prev->wb_bytes)
return false;
return pgio->pg_ops->pg_test(pgio, prev, req);
}
......
fs/nfs/pnfs.c
浏览文件 @ 53f2c4a8
此差异已折叠。
fs/nfs/pnfs.h
浏览文件 @ 53f2c4a8
此差异已折叠。
fs/nfs/proc.c
浏览文件 @ 53f2c4a8
此差异已折叠。
fs/nfs/read.c
浏览文件 @ 53f2c4a8
此差异已折叠。
fs/nfs/super.c
浏览文件 @ 53f2c4a8
此差异已折叠。
fs/nfs/write.c
浏览文件 @ 53f2c4a8
此差异已折叠。
include/linux/nfs4.h
浏览文件 @ 53f2c4a8
......@@ -69,6 +69,10 @@
#define NFS4_CDFC4_FORE_OR_BOTH 0x3
#define NFS4_CDFC4_BACK_OR_BOTH 0x7
#define NFS4_CDFS4_FORE 0x1
#define NFS4_CDFS4_BACK 0x2
#define NFS4_CDFS4_BOTH 0x3
#define NFS4_SET_TO_SERVER_TIME 0
#define NFS4_SET_TO_CLIENT_TIME 1
......@@ -526,6 +530,13 @@ enum lock_type4 {
#define FATTR4_WORD1_MOUNTED_ON_FILEID (1UL << 23)
#define FATTR4_WORD1_FS_LAYOUT_TYPES (1UL << 30)
#define FATTR4_WORD2_LAYOUT_BLKSIZE (1UL << 1)
#define FATTR4_WORD2_MDSTHRESHOLD (1UL << 4)
/* MDS threshold bitmap bits */
#define THRESHOLD_RD (1UL << 0)
#define THRESHOLD_WR (1UL << 1)
#define THRESHOLD_RD_IO (1UL << 2)
#define THRESHOLD_WR_IO (1UL << 3)
#define NFSPROC4_NULL 0
#define NFSPROC4_COMPOUND 1
......@@ -596,6 +607,8 @@ enum {
NFSPROC4_CLNT_TEST_STATEID,
NFSPROC4_CLNT_FREE_STATEID,
NFSPROC4_CLNT_GETDEVICELIST,
NFSPROC4_CLNT_BIND_CONN_TO_SESSION,
NFSPROC4_CLNT_DESTROY_CLIENTID,
};
/* nfs41 types */
......
include/linux/nfs_fs.h
浏览文件 @ 53f2c4a8
此差异已折叠。
include/linux/nfs_fs_sb.h
浏览文件 @ 53f2c4a8
此差异已折叠。
include/linux/nfs_page.h
浏览文件 @ 53f2c4a8
此差异已折叠。
include/linux/nfs_xdr.h
浏览文件 @ 53f2c4a8
此差异已折叠。
net/sunrpc/clnt.c
浏览文件 @ 53f2c4a8
......@@ -1286,6 +1286,8 @@ call_reserveresult(struct rpc_task *task)
}
switch (status) {
case -ENOMEM:
rpc_delay(task, HZ >> 2);
case -EAGAIN: /* woken up; retry */
task->tk_action = call_reserve;
return;
......
net/sunrpc/rpc_pipe.c
浏览文件 @ 53f2c4a8
此差异已折叠。
net/sunrpc/rpcb_clnt.c
浏览文件 @ 53f2c4a8
......@@ -394,6 +394,7 @@ static int rpcb_register_call(struct rpc_clnt *clnt, struct rpc_message *msg)
/**
* rpcb_register - set or unset a port registration with the local rpcbind svc
* @net: target network namespace
* @prog: RPC program number to bind
* @vers: RPC version number to bind
* @prot: transport protocol to register
......@@ -521,6 +522,7 @@ static int rpcb_unregister_all_protofamilies(struct sunrpc_net *sn,
/**
* rpcb_v4_register - set or unset a port registration with the local rpcbind
* @net: target network namespace
* @program: RPC program number of service to (un)register
* @version: RPC version number of service to (un)register
* @address: address family, IP address, and port to (un)register
......
net/sunrpc/xprt.c
浏览文件 @ 53f2c4a8
此差异已折叠。
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