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提交 cd841605 编写于 作者: F Fred Isaman 提交者： Trond Myklebust
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NFS: create common nfs_pgio_header for both read and write 

In order to avoid duplicating all the data in nfs_read_data whenever we
split it up into multiple RPC calls (either due to a short read result
or due to rsize < PAGE_SIZE), we split out the bits that are the same
per RPC call into a separate "header" structure.

The goal this patch moves towards is to have a single header
refcounted by several rpc_data structures.  Thus, want to always refer
from rpc_data to the header, and not the other way.  This patch comes
close to that ideal, but the directio code currently needs some
special casing, isolated in the nfs_direct_[read_write]hdr_release()
functions.  This will be dealt with in a future patch.
Signed-off-by: NFred Isaman <iisaman@netapp.com>
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
上级 b5542849
隐藏空白更改
内联 并排
Showing with 376 addition and 278 deletion
fs/nfs/blocklayout/blocklayout.c
浏览文件 @ cd841605
......@@ -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;
......@@ -256,10 +259,10 @@ bl_read_pagelist(struct nfs_read_data *rdata)
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 -
......@@ -286,7 +289,7 @@ bl_read_pagelist(struct nfs_read_data *rdata)
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 +297,9 @@ 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 +348,6 @@ 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 +360,12 @@ 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 +375,13 @@ 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 +397,9 @@ 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 +410,12 @@ 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 +546,7 @@ 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 +559,7 @@ 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 +573,7 @@ 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 +604,10 @@ 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 +619,7 @@ 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 +627,11 @@ 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 +639,7 @@ 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;
}
......@@ -653,10 +660,10 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
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 +671,7 @@ 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;
}
}
......@@ -677,7 +684,7 @@ 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;
}
}
......@@ -685,7 +692,7 @@ bl_write_pagelist(struct nfs_write_data *wdata, int sync)
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/direct.c
浏览文件 @ cd841605
......@@ -242,7 +242,7 @@ static void nfs_direct_read_release(void *calldata)
{
struct nfs_read_data *data = calldata;
struct nfs_direct_req *dreq = (struct nfs_direct_req *) data->req;
struct nfs_direct_req *dreq = (struct nfs_direct_req *)data->header->req;
int status = data->task.tk_status;
spin_lock(&dreq->lock);
......@@ -269,6 +269,15 @@ static const struct rpc_call_ops nfs_read_direct_ops = {
.rpc_release = nfs_direct_read_release,
};
static void nfs_direct_readhdr_release(struct nfs_read_header *rhdr)
{
struct nfs_read_data *data = &rhdr->rpc_data;
if (data->pagevec != data->page_array)
kfree(data->pagevec);
nfs_readhdr_free(&rhdr->header);
}
/*
* For each rsize'd chunk of the user's buffer, dispatch an NFS READ
* operation. If nfs_readdata_alloc() or get_user_pages() fails,
......@@ -301,6 +310,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
ssize_t started = 0;
do {
struct nfs_read_header *rhdr;
struct nfs_read_data *data;
size_t bytes;
......@@ -308,23 +318,24 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
bytes = min(rsize,count);
result = -ENOMEM;
data = nfs_readdata_alloc(nfs_page_array_len(pgbase, bytes));
if (unlikely(!data))
rhdr = nfs_readhdr_alloc(nfs_page_array_len(pgbase, bytes));
if (unlikely(!rhdr))
break;
data = &rhdr->rpc_data;
down_read(&current->mm->mmap_sem);
result = get_user_pages(current, current->mm, user_addr,
data->npages, 1, 0, data->pagevec, NULL);
up_read(&current->mm->mmap_sem);
if (result < 0) {
nfs_readdata_free(data);
nfs_direct_readhdr_release(rhdr);
break;
}
if ((unsigned)result < data->npages) {
bytes = result * PAGE_SIZE;
if (bytes <= pgbase) {
nfs_direct_release_pages(data->pagevec, result);
nfs_readdata_free(data);
nfs_direct_readhdr_release(rhdr);
break;
}
bytes -= pgbase;
......@@ -333,9 +344,9 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
get_dreq(dreq);
data->req = (struct nfs_page *) dreq;
data->inode = inode;
data->cred = msg.rpc_cred;
rhdr->header.req = (struct nfs_page *) dreq;
rhdr->header.inode = inode;
rhdr->header.cred = msg.rpc_cred;
data->args.fh = NFS_FH(inode);
data->args.context = get_nfs_open_context(ctx);
data->args.lock_context = dreq->l_ctx;
......@@ -447,13 +458,23 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov,
return result;
}
static void nfs_direct_writehdr_release(struct nfs_write_header *whdr)
{
struct nfs_write_data *data = &whdr->rpc_data;
if (data->pagevec != data->page_array)
kfree(data->pagevec);
nfs_writehdr_free(&whdr->header);
}
static void nfs_direct_free_writedata(struct nfs_direct_req *dreq)
{
while (!list_empty(&dreq->rewrite_list)) {
struct nfs_write_data *data = list_entry(dreq->rewrite_list.next, struct nfs_write_data, pages);
list_del(&data->pages);
nfs_direct_release_pages(data->pagevec, data->npages);
nfs_writedata_free(data);
struct nfs_pgio_header *hdr = list_entry(dreq->rewrite_list.next, struct nfs_pgio_header, pages);
struct nfs_write_header *whdr = container_of(hdr, struct nfs_write_header, header);
list_del(&hdr->pages);
nfs_direct_release_pages(whdr->rpc_data.pagevec, whdr->rpc_data.npages);
nfs_direct_writehdr_release(whdr);
}
}
......@@ -463,6 +484,7 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
struct inode *inode = dreq->inode;
struct list_head *p;
struct nfs_write_data *data;
struct nfs_pgio_header *hdr;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_cred = dreq->ctx->cred,
......@@ -479,7 +501,8 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
get_dreq(dreq);
list_for_each(p, &dreq->rewrite_list) {
data = list_entry(p, struct nfs_write_data, pages);
hdr = list_entry(p, struct nfs_pgio_header, pages);
data = &(container_of(hdr, struct nfs_write_header, header))->rpc_data;
get_dreq(dreq);
......@@ -652,7 +675,8 @@ static void nfs_direct_write_result(struct rpc_task *task, void *calldata)
static void nfs_direct_write_release(void *calldata)
{
struct nfs_write_data *data = calldata;
struct nfs_direct_req *dreq = (struct nfs_direct_req *) data->req;
struct nfs_pgio_header *hdr = data->header;
struct nfs_direct_req *dreq = (struct nfs_direct_req *) hdr->req;
int status = data->task.tk_status;
spin_lock(&dreq->lock);
......@@ -684,7 +708,7 @@ static void nfs_direct_write_release(void *calldata)
spin_unlock(&dreq->lock);
if (put_dreq(dreq))
nfs_direct_write_complete(dreq, data->inode);
nfs_direct_write_complete(dreq, hdr->inode);
}
static const struct rpc_call_ops nfs_write_direct_ops = {
......@@ -725,6 +749,7 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
ssize_t started = 0;
do {
struct nfs_write_header *whdr;
struct nfs_write_data *data;
size_t bytes;
......@@ -732,23 +757,25 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
bytes = min(wsize,count);
result = -ENOMEM;
data = nfs_writedata_alloc(nfs_page_array_len(pgbase, bytes));
if (unlikely(!data))
whdr = nfs_writehdr_alloc(nfs_page_array_len(pgbase, bytes));
if (unlikely(!whdr))
break;
data = &whdr->rpc_data;
down_read(&current->mm->mmap_sem);
result = get_user_pages(current, current->mm, user_addr,
data->npages, 0, 0, data->pagevec, NULL);
up_read(&current->mm->mmap_sem);
if (result < 0) {
nfs_writedata_free(data);
nfs_direct_writehdr_release(whdr);
break;
}
if ((unsigned)result < data->npages) {
bytes = result * PAGE_SIZE;
if (bytes <= pgbase) {
nfs_direct_release_pages(data->pagevec, result);
nfs_writedata_free(data);
nfs_direct_writehdr_release(whdr);
break;
}
bytes -= pgbase;
......@@ -757,11 +784,11 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
get_dreq(dreq);
list_move_tail(&data->pages, &dreq->rewrite_list);
list_move_tail(&whdr->header.pages, &dreq->rewrite_list);
data->req = (struct nfs_page *) dreq;
data->inode = inode;
data->cred = msg.rpc_cred;
whdr->header.req = (struct nfs_page *) dreq;
whdr->header.inode = inode;
whdr->header.cred = msg.rpc_cred;
data->args.fh = NFS_FH(inode);
data->args.context = ctx;
data->args.lock_context = dreq->l_ctx;
......
fs/nfs/internal.h
浏览文件 @ cd841605
......@@ -296,6 +296,8 @@ extern int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh);
struct nfs_pageio_descriptor;
/* read.c */
extern struct nfs_read_header *nfs_readhdr_alloc(unsigned int npages);
extern void nfs_readhdr_free(struct nfs_pgio_header *hdr);
extern int nfs_initiate_read(struct rpc_clnt *clnt,
struct nfs_read_data *data,
const struct rpc_call_ops *call_ops);
......@@ -309,6 +311,8 @@ 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 struct nfs_write_header *nfs_writehdr_alloc(unsigned int npages);
extern void nfs_writehdr_free(struct nfs_pgio_header *hdr);
extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc,
struct list_head *head);
extern void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio,
......
fs/nfs/nfs3proc.c
浏览文件 @ cd841605
......@@ -811,11 +811,13 @@ 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;
}
......@@ -831,10 +833,12 @@ 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;
}
......
fs/nfs/nfs4filelayout.c
浏览文件 @ cd841605
......@@ -148,6 +148,7 @@ static int filelayout_async_handle_error(struct rpc_task *task,
static int filelayout_read_done_cb(struct rpc_task *task,
struct nfs_read_data *data)
{
struct nfs_pgio_header *hdr = data->header;
int reset = 0;
dprintk("%s DS read\n", __func__);
......@@ -157,7 +158,7 @@ static int filelayout_read_done_cb(struct rpc_task *task,
dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
__func__, data->ds_clp, data->ds_clp->cl_session);
if (reset) {
pnfs_set_lo_fail(data->lseg);
pnfs_set_lo_fail(hdr->lseg);
nfs4_reset_read(task, data);
}
rpc_restart_call_prepare(task);
......@@ -175,13 +176,15 @@ static int filelayout_read_done_cb(struct rpc_task *task,
static void
filelayout_set_layoutcommit(struct nfs_write_data *wdata)
{
if (FILELAYOUT_LSEG(wdata->lseg)->commit_through_mds ||
struct nfs_pgio_header *hdr = wdata->header;
if (FILELAYOUT_LSEG(hdr->lseg)->commit_through_mds ||
wdata->res.verf->committed == NFS_FILE_SYNC)
return;
pnfs_set_layoutcommit(wdata);
dprintk("%s ionde %lu pls_end_pos %lu\n", __func__, wdata->inode->i_ino,
(unsigned long) NFS_I(wdata->inode)->layout->plh_lwb);
dprintk("%s ionde %lu pls_end_pos %lu\n", __func__, hdr->inode->i_ino,
(unsigned long) NFS_I(hdr->inode)->layout->plh_lwb);
}
/*
......@@ -210,27 +213,28 @@ static void filelayout_read_call_done(struct rpc_task *task, void *data)
dprintk("--> %s task->tk_status %d\n", __func__, task->tk_status);
/* Note this may cause RPC to be resent */
rdata->mds_ops->rpc_call_done(task, data);
rdata->header->mds_ops->rpc_call_done(task, data);
}
static void filelayout_read_count_stats(struct rpc_task *task, void *data)
{
struct nfs_read_data *rdata = data;
rpc_count_iostats(task, NFS_SERVER(rdata->inode)->client->cl_metrics);
rpc_count_iostats(task, NFS_SERVER(rdata->header->inode)->client->cl_metrics);
}
static void filelayout_read_release(void *data)
{
struct nfs_read_data *rdata = data;
put_lseg(rdata->lseg);
rdata->mds_ops->rpc_release(data);
put_lseg(rdata->header->lseg);
rdata->header->mds_ops->rpc_release(data);
}
static int filelayout_write_done_cb(struct rpc_task *task,
struct nfs_write_data *data)
{
struct nfs_pgio_header *hdr = data->header;
int reset = 0;
if (filelayout_async_handle_error(task, data->args.context->state,
......@@ -238,7 +242,7 @@ static int filelayout_write_done_cb(struct rpc_task *task,
dprintk("%s calling restart ds_clp %p ds_clp->cl_session %p\n",
__func__, data->ds_clp, data->ds_clp->cl_session);
if (reset) {
pnfs_set_lo_fail(data->lseg);
pnfs_set_lo_fail(hdr->lseg);
nfs4_reset_write(task, data);
}
rpc_restart_call_prepare(task);
......@@ -297,22 +301,22 @@ static void filelayout_write_call_done(struct rpc_task *task, void *data)
struct nfs_write_data *wdata = data;
/* Note this may cause RPC to be resent */
wdata->mds_ops->rpc_call_done(task, data);
wdata->header->mds_ops->rpc_call_done(task, data);
}
static void filelayout_write_count_stats(struct rpc_task *task, void *data)
{
struct nfs_write_data *wdata = data;
rpc_count_iostats(task, NFS_SERVER(wdata->inode)->client->cl_metrics);
rpc_count_iostats(task, NFS_SERVER(wdata->header->inode)->client->cl_metrics);
}
static void filelayout_write_release(void *data)
{
struct nfs_write_data *wdata = data;
put_lseg(wdata->lseg);
wdata->mds_ops->rpc_release(data);
put_lseg(wdata->header->lseg);
wdata->header->mds_ops->rpc_release(data);
}
static void filelayout_commit_prepare(struct rpc_task *task, void *data)
......@@ -377,7 +381,8 @@ static const struct rpc_call_ops filelayout_commit_call_ops = {
static enum pnfs_try_status
filelayout_read_pagelist(struct nfs_read_data *data)
{
struct pnfs_layout_segment *lseg = data->lseg;
struct nfs_pgio_header *hdr = data->header;
struct pnfs_layout_segment *lseg = hdr->lseg;
struct nfs4_pnfs_ds *ds;
loff_t offset = data->args.offset;
u32 j, idx;
......@@ -385,7 +390,7 @@ filelayout_read_pagelist(struct nfs_read_data *data)
int status;
dprintk("--> %s ino %lu pgbase %u req %Zu@%llu\n",
__func__, data->inode->i_ino,
__func__, hdr->inode->i_ino,
data->args.pgbase, (size_t)data->args.count, offset);
if (test_bit(NFS_DEVICEID_INVALID, &FILELAYOUT_DEVID_NODE(lseg)->flags))
......@@ -423,7 +428,8 @@ filelayout_read_pagelist(struct nfs_read_data *data)
static enum pnfs_try_status
filelayout_write_pagelist(struct nfs_write_data *data, int sync)
{
struct pnfs_layout_segment *lseg = data->lseg;
struct nfs_pgio_header *hdr = data->header;
struct pnfs_layout_segment *lseg = hdr->lseg;
struct nfs4_pnfs_ds *ds;
loff_t offset = data->args.offset;
u32 j, idx;
......@@ -445,7 +451,7 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync)
return PNFS_NOT_ATTEMPTED;
}
dprintk("%s ino %lu sync %d req %Zu@%llu DS: %s\n", __func__,
data->inode->i_ino, sync, (size_t) data->args.count, offset,
hdr->inode->i_ino, sync, (size_t) data->args.count, offset,
ds->ds_remotestr);
data->write_done_cb = filelayout_write_done_cb;
......
fs/nfs/nfs4proc.c
浏览文件 @ cd841605
......@@ -3336,12 +3336,12 @@ static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
void __nfs4_read_done_cb(struct nfs_read_data *data)
{
nfs_invalidate_atime(data->inode);
nfs_invalidate_atime(data->header->inode);
}
static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
{
struct nfs_server *server = NFS_SERVER(data->inode);
struct nfs_server *server = NFS_SERVER(data->header->inode);
if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
rpc_restart_call_prepare(task);
......@@ -3376,7 +3376,7 @@ static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message
static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data)
{
if (nfs4_setup_sequence(NFS_SERVER(data->inode),
if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
&data->args.seq_args,
&data->res.seq_res,
task))
......@@ -3387,22 +3387,25 @@ static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_da
/* Reset the the nfs_read_data to send the read to the MDS. */
void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data)
{
struct nfs_pgio_header *hdr = data->header;
struct inode *inode = hdr->inode;
dprintk("%s Reset task for i/o through\n", __func__);
put_lseg(data->lseg);
data->lseg = NULL;
put_lseg(hdr->lseg);
hdr->lseg = NULL;
data->ds_clp = NULL;
/* offsets will differ in the dense stripe case */
data->args.offset = data->mds_offset;
data->ds_clp = NULL;
data->args.fh = NFS_FH(data->inode);
data->args.fh = NFS_FH(inode);
data->read_done_cb = nfs4_read_done_cb;
task->tk_ops = data->mds_ops;
rpc_task_reset_client(task, NFS_CLIENT(data->inode));
task->tk_ops = hdr->mds_ops;
rpc_task_reset_client(task, NFS_CLIENT(inode));
}
EXPORT_SYMBOL_GPL(nfs4_reset_read);
static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data)
{
struct inode *inode = data->inode;
struct inode *inode = data->header->inode;
if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
rpc_restart_call_prepare(task);
......@@ -3426,25 +3429,28 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
/* Reset the the nfs_write_data to send the write to the MDS. */
void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data)
{
struct nfs_pgio_header *hdr = data->header;
struct inode *inode = hdr->inode;
dprintk("%s Reset task for i/o through\n", __func__);
put_lseg(data->lseg);
data->lseg = NULL;
data->ds_clp = NULL;
put_lseg(hdr->lseg);
hdr->lseg = NULL;
data->ds_clp = NULL;
data->write_done_cb = nfs4_write_done_cb;
data->args.fh = NFS_FH(data->inode);
data->args.fh = NFS_FH(inode);
data->args.bitmask = data->res.server->cache_consistency_bitmask;
data->args.offset = data->mds_offset;
data->res.fattr = &data->fattr;
task->tk_ops = data->mds_ops;
rpc_task_reset_client(task, NFS_CLIENT(data->inode));
task->tk_ops = hdr->mds_ops;
rpc_task_reset_client(task, NFS_CLIENT(inode));
}
EXPORT_SYMBOL_GPL(nfs4_reset_write);
static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct nfs_server *server = NFS_SERVER(data->inode);
struct nfs_server *server = NFS_SERVER(data->header->inode);
if (data->lseg) {
if (data->header->lseg) {
data->args.bitmask = NULL;
data->res.fattr = NULL;
} else
......@@ -3460,7 +3466,7 @@ static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_messag
static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data)
{
if (nfs4_setup_sequence(NFS_SERVER(data->inode),
if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
&data->args.seq_args,
&data->res.seq_res,
task))
......
fs/nfs/objlayout/objio_osd.c
浏览文件 @ cd841605
......@@ -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 @ cd841605
......@@ -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/pnfs.c
浏览文件 @ cd841605
......@@ -1191,13 +1191,15 @@ static int pnfs_write_done_resend_to_mds(struct inode *inode, struct list_head *
static void pnfs_ld_handle_write_error(struct nfs_write_data *data)
{
dprintk("pnfs write error = %d\n", data->pnfs_error);
if (NFS_SERVER(data->inode)->pnfs_curr_ld->flags &
struct nfs_pgio_header *hdr = data->header;
dprintk("pnfs write error = %d\n", hdr->pnfs_error);
if (NFS_SERVER(hdr->inode)->pnfs_curr_ld->flags &
PNFS_LAYOUTRET_ON_ERROR) {
clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(data->inode)->flags);
pnfs_return_layout(data->inode);
clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(hdr->inode)->flags);
pnfs_return_layout(hdr->inode);
}
data->task.tk_status = pnfs_write_done_resend_to_mds(data->inode, &data->pages);
data->task.tk_status = pnfs_write_done_resend_to_mds(hdr->inode, &hdr->pages);
}
/*
......@@ -1205,13 +1207,15 @@ static void pnfs_ld_handle_write_error(struct nfs_write_data *data)
*/
void pnfs_ld_write_done(struct nfs_write_data *data)
{
if (likely(!data->pnfs_error)) {
struct nfs_pgio_header *hdr = data->header;
if (!hdr->pnfs_error) {
pnfs_set_layoutcommit(data);
data->mds_ops->rpc_call_done(&data->task, data);
hdr->mds_ops->rpc_call_done(&data->task, data);
} else
pnfs_ld_handle_write_error(data);
put_lseg(data->lseg);
data->mds_ops->rpc_release(data);
put_lseg(hdr->lseg);
hdr->mds_ops->rpc_release(data);
}
EXPORT_SYMBOL_GPL(pnfs_ld_write_done);
......@@ -1219,12 +1223,14 @@ static void
pnfs_write_through_mds(struct nfs_pageio_descriptor *desc,
struct nfs_write_data *data)
{
list_splice_tail_init(&data->pages, &desc->pg_list);
if (data->req && list_empty(&data->req->wb_list))
nfs_list_add_request(data->req, &desc->pg_list);
struct nfs_pgio_header *hdr = data->header;
list_splice_tail_init(&hdr->pages, &desc->pg_list);
if (hdr->req && list_empty(&hdr->req->wb_list))
nfs_list_add_request(hdr->req, &desc->pg_list);
nfs_pageio_reset_write_mds(desc);
desc->pg_recoalesce = 1;
put_lseg(data->lseg);
put_lseg(hdr->lseg);
nfs_writedata_release(data);
}
......@@ -1234,20 +1240,21 @@ pnfs_try_to_write_data(struct nfs_write_data *wdata,
struct pnfs_layout_segment *lseg,
int how)
{
struct inode *inode = wdata->inode;
struct nfs_pgio_header *hdr = wdata->header;
struct inode *inode = hdr->inode;
enum pnfs_try_status trypnfs;
struct nfs_server *nfss = NFS_SERVER(inode);
wdata->mds_ops = call_ops;
wdata->lseg = get_lseg(lseg);
hdr->mds_ops = call_ops;
hdr->lseg = get_lseg(lseg);
dprintk("%s: Writing ino:%lu %u@%llu (how %d)\n", __func__,
inode->i_ino, wdata->args.count, wdata->args.offset, how);
trypnfs = nfss->pnfs_curr_ld->write_pagelist(wdata, how);
if (trypnfs == PNFS_NOT_ATTEMPTED) {
put_lseg(wdata->lseg);
wdata->lseg = NULL;
put_lseg(hdr->lseg);
hdr->lseg = NULL;
} else
nfs_inc_stats(inode, NFSIOS_PNFS_WRITE);
......@@ -1318,13 +1325,15 @@ static int pnfs_read_done_resend_to_mds(struct inode *inode, struct list_head *h
static void pnfs_ld_handle_read_error(struct nfs_read_data *data)
{
dprintk("pnfs read error = %d\n", data->pnfs_error);
if (NFS_SERVER(data->inode)->pnfs_curr_ld->flags &
struct nfs_pgio_header *hdr = data->header;
dprintk("pnfs read error = %d\n", hdr->pnfs_error);
if (NFS_SERVER(hdr->inode)->pnfs_curr_ld->flags &
PNFS_LAYOUTRET_ON_ERROR) {
clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(data->inode)->flags);
pnfs_return_layout(data->inode);
clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(hdr->inode)->flags);
pnfs_return_layout(hdr->inode);
}
data->task.tk_status = pnfs_read_done_resend_to_mds(data->inode, &data->pages);
data->task.tk_status = pnfs_read_done_resend_to_mds(hdr->inode, &hdr->pages);
}
/*
......@@ -1332,13 +1341,15 @@ static void pnfs_ld_handle_read_error(struct nfs_read_data *data)
*/
void pnfs_ld_read_done(struct nfs_read_data *data)
{
if (likely(!data->pnfs_error)) {
struct nfs_pgio_header *hdr = data->header;
if (likely(!hdr->pnfs_error)) {
__nfs4_read_done_cb(data);
data->mds_ops->rpc_call_done(&data->task, data);
hdr->mds_ops->rpc_call_done(&data->task, data);
} else
pnfs_ld_handle_read_error(data);
put_lseg(data->lseg);
data->mds_ops->rpc_release(data);
put_lseg(hdr->lseg);
hdr->mds_ops->rpc_release(data);
}
EXPORT_SYMBOL_GPL(pnfs_ld_read_done);
......@@ -1346,9 +1357,11 @@ static void
pnfs_read_through_mds(struct nfs_pageio_descriptor *desc,
struct nfs_read_data *data)
{
list_splice_tail_init(&data->pages, &desc->pg_list);
if (data->req && list_empty(&data->req->wb_list))
nfs_list_add_request(data->req, &desc->pg_list);
struct nfs_pgio_header *hdr = data->header;
list_splice_tail_init(&hdr->pages, &desc->pg_list);
if (hdr->req && list_empty(&hdr->req->wb_list))
nfs_list_add_request(hdr->req, &desc->pg_list);
nfs_pageio_reset_read_mds(desc);
desc->pg_recoalesce = 1;
nfs_readdata_release(data);
......@@ -1362,20 +1375,21 @@ pnfs_try_to_read_data(struct nfs_read_data *rdata,
const struct rpc_call_ops *call_ops,
struct pnfs_layout_segment *lseg)
{
struct inode *inode = rdata->inode;
struct nfs_pgio_header *hdr = rdata->header;
struct inode *inode = hdr->inode;
struct nfs_server *nfss = NFS_SERVER(inode);
enum pnfs_try_status trypnfs;
rdata->mds_ops = call_ops;
rdata->lseg = get_lseg(lseg);
hdr->mds_ops = call_ops;
hdr->lseg = get_lseg(lseg);
dprintk("%s: Reading ino:%lu %u@%llu\n",
__func__, inode->i_ino, rdata->args.count, rdata->args.offset);
trypnfs = nfss->pnfs_curr_ld->read_pagelist(rdata);
if (trypnfs == PNFS_NOT_ATTEMPTED) {
put_lseg(rdata->lseg);
rdata->lseg = NULL;
put_lseg(hdr->lseg);
hdr->lseg = NULL;
} else {
nfs_inc_stats(inode, NFSIOS_PNFS_READ);
}
......@@ -1450,30 +1464,32 @@ EXPORT_SYMBOL_GPL(pnfs_set_lo_fail);
void
pnfs_set_layoutcommit(struct nfs_write_data *wdata)
{
struct nfs_inode *nfsi = NFS_I(wdata->inode);
struct nfs_pgio_header *hdr = wdata->header;
struct inode *inode = hdr->inode;
struct nfs_inode *nfsi = NFS_I(inode);
loff_t end_pos = wdata->mds_offset + wdata->res.count;
bool mark_as_dirty = false;
spin_lock(&nfsi->vfs_inode.i_lock);
spin_lock(&inode->i_lock);
if (!test_and_set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) {
mark_as_dirty = true;
dprintk("%s: Set layoutcommit for inode %lu ",
__func__, wdata->inode->i_ino);
__func__, inode->i_ino);
}
if (!test_and_set_bit(NFS_LSEG_LAYOUTCOMMIT, &wdata->lseg->pls_flags)) {
if (!test_and_set_bit(NFS_LSEG_LAYOUTCOMMIT, &hdr->lseg->pls_flags)) {
/* references matched in nfs4_layoutcommit_release */
get_lseg(wdata->lseg);
get_lseg(hdr->lseg);
}
if (end_pos > nfsi->layout->plh_lwb)
nfsi->layout->plh_lwb = end_pos;
spin_unlock(&nfsi->vfs_inode.i_lock);
spin_unlock(&inode->i_lock);
dprintk("%s: lseg %p end_pos %llu\n",
__func__, wdata->lseg, nfsi->layout->plh_lwb);
__func__, hdr->lseg, nfsi->layout->plh_lwb);
/* if pnfs_layoutcommit_inode() runs between inode locks, the next one
* will be a noop because NFS_INO_LAYOUTCOMMIT will not be set */
if (mark_as_dirty)
mark_inode_dirty_sync(wdata->inode);
mark_inode_dirty_sync(inode);
}
EXPORT_SYMBOL_GPL(pnfs_set_layoutcommit);
......
fs/nfs/proc.c
浏览文件 @ cd841605
......@@ -641,12 +641,14 @@ nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data)
{
struct inode *inode = data->header->inode;
if (nfs_async_handle_expired_key(task))
return -EAGAIN;
nfs_invalidate_atime(data->inode);
nfs_invalidate_atime(inode);
if (task->tk_status >= 0) {
nfs_refresh_inode(data->inode, data->res.fattr);
nfs_refresh_inode(inode, data->res.fattr);
/* Emulate the eof flag, which isn't normally needed in NFSv2
* as it is guaranteed to always return the file attributes
*/
......@@ -668,11 +670,13 @@ static void nfs_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_dat
static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
struct inode *inode = data->header->inode;
if (nfs_async_handle_expired_key(task))
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;
}
......
fs/nfs/read.c
浏览文件 @ cd841605
......@@ -35,19 +35,24 @@ static const struct rpc_call_ops nfs_read_full_ops;
static struct kmem_cache *nfs_rdata_cachep;
struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount)
struct nfs_read_header *nfs_readhdr_alloc(unsigned int pagecount)
{
struct nfs_read_data *p;
struct nfs_read_header *p;
p = kmem_cache_zalloc(nfs_rdata_cachep, GFP_KERNEL);
if (p) {
INIT_LIST_HEAD(&p->pages);
p->npages = pagecount;
if (pagecount <= ARRAY_SIZE(p->page_array))
p->pagevec = p->page_array;
struct nfs_pgio_header *hdr = &p->header;
struct nfs_read_data *data = &p->rpc_data;
INIT_LIST_HEAD(&hdr->pages);
INIT_LIST_HEAD(&data->list);
data->npages = pagecount;
data->header = hdr;
if (pagecount <= ARRAY_SIZE(data->page_array))
data->pagevec = data->page_array;
else {
p->pagevec = kcalloc(pagecount, sizeof(struct page *), GFP_KERNEL);
if (!p->pagevec) {
data->pagevec = kcalloc(pagecount, sizeof(struct page *), GFP_KERNEL);
if (!data->pagevec) {
kmem_cache_free(nfs_rdata_cachep, p);
p = NULL;
}
......@@ -56,17 +61,19 @@ struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount)
return p;
}
void nfs_readdata_free(struct nfs_read_data *p)
void nfs_readhdr_free(struct nfs_pgio_header *hdr)
{
if (p && (p->pagevec != &p->page_array[0]))
kfree(p->pagevec);
kmem_cache_free(nfs_rdata_cachep, p);
struct nfs_read_header *rhdr = container_of(hdr, struct nfs_read_header, header);
kmem_cache_free(nfs_rdata_cachep, rhdr);
}
void nfs_readdata_release(struct nfs_read_data *rdata)
{
put_nfs_open_context(rdata->args.context);
nfs_readdata_free(rdata);
if (rdata->pagevec != rdata->page_array)
kfree(rdata->pagevec);
nfs_readhdr_free(rdata->header);
}
static
......@@ -173,13 +180,13 @@ int nfs_initiate_read(struct rpc_clnt *clnt,
struct nfs_read_data *data,
const struct rpc_call_ops *call_ops)
{
struct inode *inode = data->inode;
struct inode *inode = data->header->inode;
int swap_flags = IS_SWAPFILE(inode) ? NFS_RPC_SWAPFLAGS : 0;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
.rpc_cred = data->header->cred,
};
struct rpc_task_setup task_setup_data = {
.task = &data->task,
......@@ -216,11 +223,11 @@ EXPORT_SYMBOL_GPL(nfs_initiate_read);
static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
unsigned int count, unsigned int offset)
{
struct inode *inode = req->wb_context->dentry->d_inode;
struct inode *inode = data->header->inode;
data->req = req;
data->inode = inode;
data->cred = req->wb_context->cred;
data->header->req = req;
data->header->inode = inode;
data->header->cred = req->wb_context->cred;
data->args.fh = NFS_FH(inode);
data->args.offset = req_offset(req) + offset;
......@@ -239,7 +246,7 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
static int nfs_do_read(struct nfs_read_data *data,
const struct rpc_call_ops *call_ops)
{
struct inode *inode = data->args.context->dentry->d_inode;
struct inode *inode = data->header->inode;
return nfs_initiate_read(NFS_CLIENT(inode), data, call_ops);
}
......@@ -293,6 +300,7 @@ static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc, struct list_head
{
struct nfs_page *req = nfs_list_entry(desc->pg_list.next);
struct page *page = req->wb_page;
struct nfs_read_header *rhdr;
struct nfs_read_data *data;
size_t rsize = desc->pg_bsize, nbytes;
unsigned int offset;
......@@ -306,9 +314,10 @@ static int nfs_pagein_multi(struct nfs_pageio_descriptor *desc, struct list_head
do {
size_t len = min(nbytes,rsize);
data = nfs_readdata_alloc(1);
if (!data)
rhdr = nfs_readhdr_alloc(1);
if (!rhdr)
goto out_bad;
data = &rhdr->rpc_data;
data->pagevec[0] = page;
nfs_read_rpcsetup(req, data, len, offset);
list_add(&data->list, res);
......@@ -333,26 +342,28 @@ static int nfs_pagein_one(struct nfs_pageio_descriptor *desc, struct list_head *
{
struct nfs_page *req;
struct page **pages;
struct nfs_read_header *rhdr;
struct nfs_read_data *data;
struct list_head *head = &desc->pg_list;
int ret = 0;
data = nfs_readdata_alloc(nfs_page_array_len(desc->pg_base,
desc->pg_count));
if (!data) {
rhdr = nfs_readhdr_alloc(nfs_page_array_len(desc->pg_base,
desc->pg_count));
if (!rhdr) {
nfs_async_read_error(head);
ret = -ENOMEM;
goto out;
}
data = &rhdr->rpc_data;
pages = data->pagevec;
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
nfs_list_add_request(req, &data->pages);
nfs_list_add_request(req, &rhdr->header.pages);
*pages++ = req->wb_page;
}
req = nfs_list_entry(data->pages.next);
req = nfs_list_entry(rhdr->header.pages.next);
nfs_read_rpcsetup(req, data, desc->pg_count, 0);
list_add(&data->list, res);
......@@ -390,20 +401,21 @@ static const struct nfs_pageio_ops nfs_pageio_read_ops = {
*/
int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data)
{
struct inode *inode = data->header->inode;
int status;
dprintk("NFS: %s: %5u, (status %d)\n", __func__, task->tk_pid,
task->tk_status);
status = NFS_PROTO(data->inode)->read_done(task, data);
status = NFS_PROTO(inode)->read_done(task, data);
if (status != 0)
return status;
nfs_add_stats(data->inode, NFSIOS_SERVERREADBYTES, data->res.count);
nfs_add_stats(inode, NFSIOS_SERVERREADBYTES, data->res.count);
if (task->tk_status == -ESTALE) {
set_bit(NFS_INO_STALE, &NFS_I(data->inode)->flags);
nfs_mark_for_revalidate(data->inode);
set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
nfs_mark_for_revalidate(inode);
}
return 0;
}
......@@ -417,7 +429,7 @@ static void nfs_readpage_retry(struct rpc_task *task, struct nfs_read_data *data
return;
/* This is a short read! */
nfs_inc_stats(data->inode, NFSIOS_SHORTREAD);
nfs_inc_stats(data->header->inode, NFSIOS_SHORTREAD);
/* Has the server at least made some progress? */
if (resp->count == 0)
return;
......@@ -449,7 +461,7 @@ static void nfs_readpage_result_partial(struct rpc_task *task, void *calldata)
static void nfs_readpage_release_partial(void *calldata)
{
struct nfs_read_data *data = calldata;
struct nfs_page *req = data->req;
struct nfs_page *req = data->header->req;
struct page *page = req->wb_page;
int status = data->task.tk_status;
......@@ -461,13 +473,13 @@ static void nfs_readpage_release_partial(void *calldata)
SetPageUptodate(page);
nfs_readpage_release(req);
}
nfs_readdata_release(calldata);
nfs_readdata_release(data);
}
void nfs_read_prepare(struct rpc_task *task, void *calldata)
{
struct nfs_read_data *data = calldata;
NFS_PROTO(data->inode)->read_rpc_prepare(task, data);
NFS_PROTO(data->header->inode)->read_rpc_prepare(task, data);
}
static const struct rpc_call_ops nfs_read_partial_ops = {
......@@ -524,9 +536,10 @@ static void nfs_readpage_result_full(struct rpc_task *task, void *calldata)
static void nfs_readpage_release_full(void *calldata)
{
struct nfs_read_data *data = calldata;
struct nfs_pgio_header *hdr = data->header;
while (!list_empty(&data->pages)) {
struct nfs_page *req = nfs_list_entry(data->pages.next);
while (!list_empty(&hdr->pages)) {
struct nfs_page *req = nfs_list_entry(hdr->pages.next);
nfs_list_remove_request(req);
nfs_readpage_release(req);
......@@ -685,7 +698,7 @@ int nfs_readpages(struct file *filp, struct address_space *mapping,
int __init nfs_init_readpagecache(void)
{
nfs_rdata_cachep = kmem_cache_create("nfs_read_data",
sizeof(struct nfs_read_data),
sizeof(struct nfs_read_header),
0, SLAB_HWCACHE_ALIGN,
NULL);
if (nfs_rdata_cachep == NULL)
......
fs/nfs/write.c
浏览文件 @ cd841605
......@@ -69,19 +69,24 @@ void nfs_commit_free(struct nfs_commit_data *p)
}
EXPORT_SYMBOL_GPL(nfs_commit_free);
struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount)
struct nfs_write_header *nfs_writehdr_alloc(unsigned int pagecount)
{
struct nfs_write_data *p = mempool_alloc(nfs_wdata_mempool, GFP_NOFS);
struct nfs_write_header *p = mempool_alloc(nfs_wdata_mempool, GFP_NOFS);
if (p) {
struct nfs_pgio_header *hdr = &p->header;
struct nfs_write_data *data = &p->rpc_data;
memset(p, 0, sizeof(*p));
INIT_LIST_HEAD(&p->pages);
p->npages = pagecount;
if (pagecount <= ARRAY_SIZE(p->page_array))
p->pagevec = p->page_array;
INIT_LIST_HEAD(&hdr->pages);
INIT_LIST_HEAD(&data->list);
data->npages = pagecount;
data->header = hdr;
if (pagecount <= ARRAY_SIZE(data->page_array))
data->pagevec = data->page_array;
else {
p->pagevec = kcalloc(pagecount, sizeof(struct page *), GFP_NOFS);
if (!p->pagevec) {
data->pagevec = kcalloc(pagecount, sizeof(struct page *), GFP_NOFS);
if (!data->pagevec) {
mempool_free(p, nfs_wdata_mempool);
p = NULL;
}
......@@ -90,17 +95,18 @@ struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount)
return p;
}
void nfs_writedata_free(struct nfs_write_data *p)
void nfs_writehdr_free(struct nfs_pgio_header *hdr)
{
if (p && (p->pagevec != &p->page_array[0]))
kfree(p->pagevec);
mempool_free(p, nfs_wdata_mempool);
struct nfs_write_header *whdr = container_of(hdr, struct nfs_write_header, header);
mempool_free(whdr, nfs_wdata_mempool);
}
void nfs_writedata_release(struct nfs_write_data *wdata)
{
put_nfs_open_context(wdata->args.context);
nfs_writedata_free(wdata);
if (wdata->pagevec != wdata->page_array)
kfree(wdata->pagevec);
nfs_writehdr_free(wdata->header);
}
static void nfs_context_set_write_error(struct nfs_open_context *ctx, int error)
......@@ -507,9 +513,8 @@ static inline
int nfs_write_need_commit(struct nfs_write_data *data)
{
if (data->verf.committed == NFS_DATA_SYNC)
return data->lseg == NULL;
else
return data->verf.committed != NFS_FILE_SYNC;
return data->header->lseg == NULL;
return data->verf.committed != NFS_FILE_SYNC;
}
static inline
......@@ -517,7 +522,7 @@ int nfs_reschedule_unstable_write(struct nfs_page *req,
struct nfs_write_data *data)
{
if (test_and_clear_bit(PG_NEED_COMMIT, &req->wb_flags)) {
nfs_mark_request_commit(req, data->lseg);
nfs_mark_request_commit(req, data->header->lseg);
return 1;
}
if (test_and_clear_bit(PG_NEED_RESCHED, &req->wb_flags)) {
......@@ -841,13 +846,13 @@ int nfs_initiate_write(struct rpc_clnt *clnt,
const struct rpc_call_ops *call_ops,
int how)
{
struct inode *inode = data->inode;
struct inode *inode = data->header->inode;
int priority = flush_task_priority(how);
struct rpc_task *task;
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
.rpc_cred = data->header->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = clnt,
......@@ -896,14 +901,15 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
unsigned int count, unsigned int offset,
int how)
{
struct nfs_pgio_header *hdr = data->header;
struct inode *inode = req->wb_context->dentry->d_inode;
/* Set up the RPC argument and reply structs
* NB: take care not to mess about with data->commit et al. */
data->req = req;
data->inode = inode = req->wb_context->dentry->d_inode;
data->cred = req->wb_context->cred;
hdr->req = req;
hdr->inode = inode = req->wb_context->dentry->d_inode;
hdr->cred = req->wb_context->cred;
data->args.fh = NFS_FH(inode);
data->args.offset = req_offset(req) + offset;
......@@ -935,7 +941,7 @@ static int nfs_do_write(struct nfs_write_data *data,
const struct rpc_call_ops *call_ops,
int how)
{
struct inode *inode = data->args.context->dentry->d_inode;
struct inode *inode = data->header->inode;
return nfs_initiate_write(NFS_CLIENT(inode), data, call_ops, how);
}
......@@ -981,6 +987,7 @@ static int nfs_flush_multi(struct nfs_pageio_descriptor *desc, struct list_head
{
struct nfs_page *req = nfs_list_entry(desc->pg_list.next);
struct page *page = req->wb_page;
struct nfs_write_header *whdr;
struct nfs_write_data *data;
size_t wsize = desc->pg_bsize, nbytes;
unsigned int offset;
......@@ -1000,9 +1007,10 @@ static int nfs_flush_multi(struct nfs_pageio_descriptor *desc, struct list_head
do {
size_t len = min(nbytes, wsize);
data = nfs_writedata_alloc(1);
if (!data)
whdr = nfs_writehdr_alloc(1);
if (!whdr)
goto out_bad;
data = &whdr->rpc_data;
data->pagevec[0] = page;
nfs_write_rpcsetup(req, data, len, offset, desc->pg_ioflags);
list_add(&data->list, res);
......@@ -1036,13 +1044,14 @@ static int nfs_flush_one(struct nfs_pageio_descriptor *desc, struct list_head *r
{
struct nfs_page *req;
struct page **pages;
struct nfs_write_header *whdr;
struct nfs_write_data *data;
struct list_head *head = &desc->pg_list;
int ret = 0;
data = nfs_writedata_alloc(nfs_page_array_len(desc->pg_base,
desc->pg_count));
if (!data) {
whdr = nfs_writehdr_alloc(nfs_page_array_len(desc->pg_base,
desc->pg_count));
if (!whdr) {
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
......@@ -1051,14 +1060,15 @@ static int nfs_flush_one(struct nfs_pageio_descriptor *desc, struct list_head *r
ret = -ENOMEM;
goto out;
}
data = &whdr->rpc_data;
pages = data->pagevec;
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
nfs_list_add_request(req, &data->pages);
nfs_list_add_request(req, &whdr->header.pages);
*pages++ = req->wb_page;
}
req = nfs_list_entry(data->pages.next);
req = nfs_list_entry(whdr->header.pages.next);
if ((desc->pg_ioflags & FLUSH_COND_STABLE) &&
(desc->pg_moreio || NFS_I(desc->pg_inode)->ncommit))
......@@ -1126,10 +1136,11 @@ static void nfs_writeback_done_partial(struct rpc_task *task, void *calldata)
dprintk("NFS: %5u write(%s/%lld %d@%lld)",
task->tk_pid,
data->req->wb_context->dentry->d_inode->i_sb->s_id,
data->header->inode->i_sb->s_id,
(long long)
NFS_FILEID(data->req->wb_context->dentry->d_inode),
data->req->wb_bytes, (long long)req_offset(data->req));
NFS_FILEID(data->header->inode),
data->header->req->wb_bytes,
(long long)req_offset(data->header->req));
nfs_writeback_done(task, data);
}
......@@ -1137,7 +1148,7 @@ static void nfs_writeback_done_partial(struct rpc_task *task, void *calldata)
static void nfs_writeback_release_partial(void *calldata)
{
struct nfs_write_data *data = calldata;
struct nfs_page *req = data->req;
struct nfs_page *req = data->header->req;
struct page *page = req->wb_page;
int status = data->task.tk_status;
......@@ -1169,13 +1180,13 @@ static void nfs_writeback_release_partial(void *calldata)
out:
if (atomic_dec_and_test(&req->wb_complete))
nfs_writepage_release(req, data);
nfs_writedata_release(calldata);
nfs_writedata_release(data);
}
void nfs_write_prepare(struct rpc_task *task, void *calldata)
{
struct nfs_write_data *data = calldata;
NFS_PROTO(data->inode)->write_rpc_prepare(task, data);
NFS_PROTO(data->header->inode)->write_rpc_prepare(task, data);
}
void nfs_commit_prepare(struct rpc_task *task, void *calldata)
......@@ -1208,11 +1219,12 @@ static void nfs_writeback_done_full(struct rpc_task *task, void *calldata)
static void nfs_writeback_release_full(void *calldata)
{
struct nfs_write_data *data = calldata;
struct nfs_pgio_header *hdr = data->header;
int status = data->task.tk_status;
/* Update attributes as result of writeback. */
while (!list_empty(&data->pages)) {
struct nfs_page *req = nfs_list_entry(data->pages.next);
while (!list_empty(&hdr->pages)) {
struct nfs_page *req = nfs_list_entry(hdr->pages.next);
struct page *page = req->wb_page;
nfs_list_remove_request(req);
......@@ -1233,7 +1245,7 @@ static void nfs_writeback_release_full(void *calldata)
if (nfs_write_need_commit(data)) {
memcpy(&req->wb_verf, &data->verf, sizeof(req->wb_verf));
nfs_mark_request_commit(req, data->lseg);
nfs_mark_request_commit(req, hdr->lseg);
dprintk(" marked for commit\n");
goto next;
}
......@@ -1244,7 +1256,7 @@ static void nfs_writeback_release_full(void *calldata)
nfs_unlock_request(req);
nfs_end_page_writeback(page);
}
nfs_writedata_release(calldata);
nfs_writedata_release(data);
}
static const struct rpc_call_ops nfs_write_full_ops = {
......@@ -1261,6 +1273,7 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
{
struct nfs_writeargs *argp = &data->args;
struct nfs_writeres *resp = &data->res;
struct inode *inode = data->header->inode;
int status;
dprintk("NFS: %5u nfs_writeback_done (status %d)\n",
......@@ -1273,10 +1286,10 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
* another writer had changed the file, but some applications
* depend on tighter cache coherency when writing.
*/
status = NFS_PROTO(data->inode)->write_done(task, data);
status = NFS_PROTO(inode)->write_done(task, data);
if (status != 0)
return;
nfs_add_stats(data->inode, NFSIOS_SERVERWRITTENBYTES, resp->count);
nfs_add_stats(inode, NFSIOS_SERVERWRITTENBYTES, resp->count);
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
if (resp->verf->committed < argp->stable && task->tk_status >= 0) {
......@@ -1294,7 +1307,7 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
if (time_before(complain, jiffies)) {
dprintk("NFS: faulty NFS server %s:"
" (committed = %d) != (stable = %d)\n",
NFS_SERVER(data->inode)->nfs_client->cl_hostname,
NFS_SERVER(inode)->nfs_client->cl_hostname,
resp->verf->committed, argp->stable);
complain = jiffies + 300 * HZ;
}
......@@ -1304,7 +1317,7 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
if (task->tk_status >= 0 && resp->count < argp->count) {
static unsigned long complain;
nfs_inc_stats(data->inode, NFSIOS_SHORTWRITE);
nfs_inc_stats(inode, NFSIOS_SHORTWRITE);
/* Has the server at least made some progress? */
if (resp->count != 0) {
......@@ -1333,7 +1346,6 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
/* Can't do anything about it except throw an error. */
task->tk_status = -EIO;
}
return;
}
......@@ -1745,7 +1757,7 @@ int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
int __init nfs_init_writepagecache(void)
{
nfs_wdata_cachep = kmem_cache_create("nfs_write_data",
sizeof(struct nfs_write_data),
sizeof(struct nfs_write_header),
0, SLAB_HWCACHE_ALIGN,
NULL);
if (nfs_wdata_cachep == NULL)
......
include/linux/nfs_fs.h
浏览文件 @ cd841605
......@@ -568,12 +568,6 @@ nfs_have_writebacks(struct inode *inode)
return NFS_I(inode)->npages != 0;
}
/*
* Allocate nfs_write_data structures
*/
extern struct nfs_write_data *nfs_writedata_alloc(unsigned int npages);
extern void nfs_writedata_free(struct nfs_write_data *);
/*
* linux/fs/nfs/read.c
*/
......@@ -584,12 +578,6 @@ extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *);
extern int nfs_readpage_async(struct nfs_open_context *, struct inode *,
struct page *);
/*
* Allocate nfs_read_data structures
*/
extern struct nfs_read_data *nfs_readdata_alloc(unsigned int npages);
extern void nfs_readdata_free(struct nfs_read_data *);
/*
* linux/fs/nfs3proc.c
*/
......
include/linux/nfs_xdr.h
浏览文件 @ cd841605
......@@ -1168,52 +1168,58 @@ struct nfs_page;
#define NFS_PAGEVEC_SIZE (8U)
struct nfs_read_data {
struct nfs_pgio_header *header;
struct list_head list;
struct rpc_task task;
struct inode *inode;
struct rpc_cred *cred;
struct nfs_fattr fattr; /* fattr storage */
struct list_head pages; /* Coalesced read requests */
struct list_head list; /* lists of struct nfs_read_data */
struct nfs_page *req; /* multi ops per nfs_page */
struct page **pagevec;
unsigned int npages; /* Max length of pagevec */
struct nfs_readargs args;
struct nfs_readres res;
unsigned long timestamp; /* For lease renewal */
struct pnfs_layout_segment *lseg;
struct nfs_client *ds_clp; /* pNFS data server */
const struct rpc_call_ops *mds_ops;
int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
__u64 mds_offset;
int pnfs_error;
struct page *page_array[NFS_PAGEVEC_SIZE];
struct nfs_client *ds_clp; /* pNFS data server */
};
struct nfs_pgio_header {
struct inode *inode;
struct rpc_cred *cred;
struct list_head pages;
struct nfs_page *req;
struct pnfs_layout_segment *lseg;
const struct rpc_call_ops *mds_ops;
int pnfs_error;
};
struct nfs_read_header {
struct nfs_pgio_header header;
struct nfs_read_data rpc_data;
};
struct nfs_direct_req;
struct nfs_write_data {
struct nfs_pgio_header *header;
struct list_head list;
struct rpc_task task;
struct inode *inode;
struct rpc_cred *cred;
struct nfs_fattr fattr;
struct nfs_writeverf verf;
struct list_head pages; /* Coalesced requests we wish to flush */
struct list_head list; /* lists of struct nfs_write_data */
struct nfs_page *req; /* multi ops per nfs_page */
struct page **pagevec;
unsigned int npages; /* Max length of pagevec */
struct nfs_writeargs args; /* argument struct */
struct nfs_writeres res; /* result struct */
struct pnfs_layout_segment *lseg;
struct nfs_client *ds_clp; /* pNFS data server */
const struct rpc_call_ops *mds_ops;
int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
#ifdef CONFIG_NFS_V4
unsigned long timestamp; /* For lease renewal */
#endif
int (*write_done_cb) (struct rpc_task *task, struct nfs_write_data *data);
__u64 mds_offset; /* Filelayout dense stripe */
int pnfs_error;
struct page *page_array[NFS_PAGEVEC_SIZE];
struct nfs_client *ds_clp; /* pNFS data server */
};
struct nfs_write_header {
struct nfs_pgio_header header;
struct nfs_write_data rpc_data;
};
struct nfs_commit_data {
......
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