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提交 bdc7f021 编写于 作者: T Trond Myklebust
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NFS: Clean up the (commit|read|write)_setup() callback routines 

Move the common code for setting up the nfs_write_data and nfs_read_data
structures into fs/nfs/read.c, fs/nfs/write.c and fs/nfs/direct.c.
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
上级 b3ef8b3b
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Showing with 113 addition and 143 deletion
fs/nfs/direct.c
浏览文件 @ bdc7f021
......@@ -272,8 +272,12 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
unsigned long user_addr = (unsigned long)iov->iov_base;
size_t count = iov->iov_len;
size_t rsize = NFS_SERVER(inode)->rsize;
struct rpc_message msg = {
.rpc_cred = ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(inode),
.rpc_message = &msg,
.callback_ops = &nfs_read_direct_ops,
.flags = RPC_TASK_ASYNC,
};
......@@ -316,7 +320,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
data->req = (struct nfs_page *) dreq;
data->inode = inode;
data->cred = ctx->cred;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(inode);
data->args.context = ctx;
data->args.offset = pos;
......@@ -326,10 +330,12 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
data->res.fattr = &data->fattr;
data->res.eof = 0;
data->res.count = bytes;
msg.rpc_argp = &data->args;
msg.rpc_resp = &data->res;
task_setup_data.callback_data = data;
NFS_PROTO(inode)->read_setup(data, &msg);
rpc_init_task(&data->task, &task_setup_data);
NFS_PROTO(inode)->read_setup(data);
rpc_execute(&data->task);
......@@ -434,6 +440,9 @@ 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 rpc_message msg = {
.rpc_cred = dreq->ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(inode),
.callback_ops = &nfs_write_direct_ops,
......@@ -448,6 +457,9 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
get_dreq(dreq);
/* Use stable writes */
data->args.stable = NFS_FILE_SYNC;
/*
* Reset data->res.
*/
......@@ -460,8 +472,10 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
* since the original request was sent.
*/
task_setup_data.callback_data = data;
msg.rpc_argp = &data->args;
msg.rpc_resp = &data->res;
NFS_PROTO(inode)->write_setup(data, &msg);
rpc_init_task(&data->task, &task_setup_data);
NFS_PROTO(inode)->write_setup(data, FLUSH_STABLE);
/*
* We're called via an RPC callback, so BKL is already held.
......@@ -509,15 +523,21 @@ static const struct rpc_call_ops nfs_commit_direct_ops = {
static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
{
struct nfs_write_data *data = dreq->commit_data;
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = dreq->ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(dreq->inode),
.rpc_message = &msg,
.callback_ops = &nfs_commit_direct_ops,
.callback_data = data,
.flags = RPC_TASK_ASYNC,
};
data->inode = dreq->inode;
data->cred = dreq->ctx->cred;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(data->inode);
data->args.offset = 0;
......@@ -526,8 +546,8 @@ static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
data->res.fattr = &data->fattr;
data->res.verf = &data->verf;
NFS_PROTO(data->inode)->commit_setup(data, &msg);
rpc_init_task(&data->task, &task_setup_data);
NFS_PROTO(data->inode)->commit_setup(data, 0);
/* Note: task.tk_ops->rpc_release will free dreq->commit_data */
dreq->commit_data = NULL;
......@@ -649,8 +669,12 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
struct inode *inode = ctx->path.dentry->d_inode;
unsigned long user_addr = (unsigned long)iov->iov_base;
size_t count = iov->iov_len;
struct rpc_message msg = {
.rpc_cred = ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(inode),
.rpc_message = &msg,
.callback_ops = &nfs_write_direct_ops,
.flags = RPC_TASK_ASYNC,
};
......@@ -696,20 +720,23 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
data->req = (struct nfs_page *) dreq;
data->inode = inode;
data->cred = ctx->cred;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(inode);
data->args.context = ctx;
data->args.offset = pos;
data->args.pgbase = pgbase;
data->args.pages = data->pagevec;
data->args.count = bytes;
data->args.stable = sync;
data->res.fattr = &data->fattr;
data->res.count = bytes;
data->res.verf = &data->verf;
task_setup_data.callback_data = data;
msg.rpc_argp = &data->args;
msg.rpc_resp = &data->res;
NFS_PROTO(inode)->write_setup(data, &msg);
rpc_init_task(&data->task, &task_setup_data);
NFS_PROTO(inode)->write_setup(data, sync);
rpc_execute(&data->task);
......@@ -782,7 +809,7 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, const struct iovec *iov,
struct rpc_clnt *clnt = NFS_CLIENT(inode);
struct nfs_direct_req *dreq;
size_t wsize = NFS_SERVER(inode)->wsize;
int sync = 0;
int sync = NFS_UNSTABLE;
dreq = nfs_direct_req_alloc();
if (!dreq)
......@@ -790,7 +817,7 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, const struct iovec *iov,
nfs_alloc_commit_data(dreq);
if (dreq->commit_data == NULL || count < wsize)
sync = FLUSH_STABLE;
sync = NFS_FILE_SYNC;
dreq->inode = inode;
dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp));
......
fs/nfs/nfs3proc.c
浏览文件 @ bdc7f021
......@@ -732,16 +732,9 @@ static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
return 0;
}
static void nfs3_proc_read_setup(struct nfs_read_data *data)
static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_READ],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
}
static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
......@@ -753,24 +746,9 @@ static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
return 0;
}
static void nfs3_proc_write_setup(struct nfs_write_data *data, int how)
static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_WRITE],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
data->args.stable = NFS_UNSTABLE;
if (how & FLUSH_STABLE) {
data->args.stable = NFS_FILE_SYNC;
if (NFS_I(data->inode)->ncommit)
data->args.stable = NFS_DATA_SYNC;
}
/* Finalize the task. */
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
}
static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
......@@ -781,16 +759,9 @@ 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, int how)
static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
}
static int
......
fs/nfs/nfs4proc.c
浏览文件 @ bdc7f021
......@@ -2432,18 +2432,10 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
return 0;
}
static void nfs4_proc_read_setup(struct nfs_read_data *data)
static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
data->timestamp = jiffies;
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
}
static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
......@@ -2461,33 +2453,15 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
return 0;
}
static void nfs4_proc_write_setup(struct nfs_write_data *data, int how)
static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
struct inode *inode = data->inode;
struct nfs_server *server = NFS_SERVER(inode);
int stable;
struct nfs_server *server = NFS_SERVER(data->inode);
if (how & FLUSH_STABLE) {
if (!NFS_I(inode)->ncommit)
stable = NFS_FILE_SYNC;
else
stable = NFS_DATA_SYNC;
} else
stable = NFS_UNSTABLE;
data->args.stable = stable;
data->args.bitmask = server->attr_bitmask;
data->res.server = server;
data->timestamp = jiffies;
/* Finalize the task. */
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
}
static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
......@@ -2502,20 +2476,13 @@ static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
return 0;
}
static void nfs4_proc_commit_setup(struct nfs_write_data *data, int how)
static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
struct nfs_server *server = NFS_SERVER(data->inode);
data->args.bitmask = server->attr_bitmask;
data->res.server = server;
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
}
/*
......
fs/nfs/proc.c
浏览文件 @ bdc7f021
......@@ -565,16 +565,9 @@ static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data)
return 0;
}
static void nfs_proc_read_setup(struct nfs_read_data *data)
static void nfs_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_READ],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs_procedures[NFSPROC_READ];
}
static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
......@@ -584,24 +577,15 @@ static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
return 0;
}
static void nfs_proc_write_setup(struct nfs_write_data *data, int how)
static void nfs_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_WRITE],
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = data->cred,
};
/* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
data->args.stable = NFS_FILE_SYNC;
/* Finalize the task. */
rpc_call_setup(&data->task, &msg, 0);
msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE];
}
static void
nfs_proc_commit_setup(struct nfs_write_data *data, int how)
nfs_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
{
BUG();
}
......
fs/nfs/read.c
浏览文件 @ bdc7f021
......@@ -153,6 +153,16 @@ static void nfs_readpage_release(struct nfs_page *req)
nfs_release_request(req);
}
static void nfs_execute_read(struct nfs_read_data *data)
{
struct rpc_clnt *clnt = NFS_CLIENT(data->inode);
sigset_t oldset;
rpc_clnt_sigmask(clnt, &oldset);
rpc_execute(&data->task);
rpc_clnt_sigunmask(clnt, &oldset);
}
/*
* Set up the NFS read request struct
*/
......@@ -162,8 +172,14 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
{
struct inode *inode = req->wb_context->path.dentry->d_inode;
int swap_flags = IS_SWAPFILE(inode) ? NFS_RPC_SWAPFLAGS : 0;
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = req->wb_context->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(inode),
.rpc_message = &msg,
.callback_ops = call_ops,
.callback_data = data,
.flags = RPC_TASK_ASYNC | swap_flags,
......@@ -171,7 +187,7 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
data->req = req;
data->inode = inode;
data->cred = req->wb_context->cred;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(inode);
data->args.offset = req_offset(req) + offset;
......@@ -186,8 +202,8 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
nfs_fattr_init(&data->fattr);
/* Set up the initial task struct. */
NFS_PROTO(inode)->read_setup(data, &msg);
rpc_init_task(&data->task, &task_setup_data);
NFS_PROTO(inode)->read_setup(data);
dprintk("NFS: %5u initiated read call (req %s/%Ld, %u bytes @ offset %Lu)\n",
data->task.tk_pid,
......@@ -195,6 +211,8 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
(long long)NFS_FILEID(inode),
count,
(unsigned long long)data->args.offset);
nfs_execute_read(data);
}
static void
......@@ -210,19 +228,6 @@ nfs_async_read_error(struct list_head *head)
}
}
/*
* Start an async read operation
*/
static void nfs_execute_read(struct nfs_read_data *data)
{
struct rpc_clnt *clnt = NFS_CLIENT(data->inode);
sigset_t oldset;
rpc_clnt_sigmask(clnt, &oldset);
rpc_execute(&data->task);
rpc_clnt_sigunmask(clnt, &oldset);
}
/*
* Generate multiple requests to fill a single page.
*
......@@ -277,7 +282,6 @@ static int nfs_pagein_multi(struct inode *inode, struct list_head *head, unsigne
rsize, offset);
offset += rsize;
nbytes -= rsize;
nfs_execute_read(data);
} while (nbytes != 0);
return 0;
......@@ -315,8 +319,6 @@ static int nfs_pagein_one(struct inode *inode, struct list_head *head, unsigned
req = nfs_list_entry(data->pages.next);
nfs_read_rpcsetup(req, data, &nfs_read_full_ops, count, 0);
nfs_execute_read(data);
return 0;
out_bad:
nfs_async_read_error(head);
......
fs/nfs/write.c
浏览文件 @ bdc7f021
......@@ -764,6 +764,16 @@ static int flush_task_priority(int how)
return RPC_PRIORITY_NORMAL;
}
static void nfs_execute_write(struct nfs_write_data *data)
{
struct rpc_clnt *clnt = NFS_CLIENT(data->inode);
sigset_t oldset;
rpc_clnt_sigmask(clnt, &oldset);
rpc_execute(&data->task);
rpc_clnt_sigunmask(clnt, &oldset);
}
/*
* Set up the argument/result storage required for the RPC call.
*/
......@@ -776,8 +786,14 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
struct inode *inode = req->wb_context->path.dentry->d_inode;
int flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
int priority = flush_task_priority(how);
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = req->wb_context->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(inode),
.rpc_message = &msg,
.callback_ops = call_ops,
.callback_data = data,
.flags = flags,
......@@ -789,7 +805,7 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
data->req = req;
data->inode = inode = req->wb_context->path.dentry->d_inode;
data->cred = req->wb_context->cred;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(inode);
data->args.offset = req_offset(req) + offset;
......@@ -797,6 +813,12 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
data->args.pages = data->pagevec;
data->args.count = count;
data->args.context = req->wb_context;
data->args.stable = NFS_UNSTABLE;
if (how & FLUSH_STABLE) {
data->args.stable = NFS_DATA_SYNC;
if (!NFS_I(inode)->ncommit)
data->args.stable = NFS_FILE_SYNC;
}
data->res.fattr = &data->fattr;
data->res.count = count;
......@@ -804,8 +826,8 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
nfs_fattr_init(&data->fattr);
/* Set up the initial task struct. */
NFS_PROTO(inode)->write_setup(data, &msg);
rpc_init_task(&data->task, &task_setup_data);
NFS_PROTO(inode)->write_setup(data, how);
dprintk("NFS: %5u initiated write call "
"(req %s/%Ld, %u bytes @ offset %Lu)\n",
......@@ -814,16 +836,8 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
(long long)NFS_FILEID(inode),
count,
(unsigned long long)data->args.offset);
}
static void nfs_execute_write(struct nfs_write_data *data)
{
struct rpc_clnt *clnt = NFS_CLIENT(data->inode);
sigset_t oldset;
rpc_clnt_sigmask(clnt, &oldset);
rpc_execute(&data->task);
rpc_clnt_sigunmask(clnt, &oldset);
nfs_execute_write(data);
}
/*
......@@ -870,7 +884,6 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned
wsize, offset, how);
offset += wsize;
nbytes -= wsize;
nfs_execute_write(data);
} while (nbytes != 0);
return 0;
......@@ -918,7 +931,6 @@ static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned i
/* Set up the argument struct */
nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, how);
nfs_execute_write(data);
return 0;
out_bad:
while (!list_empty(head)) {
......@@ -1152,8 +1164,14 @@ static void nfs_commit_rpcsetup(struct list_head *head,
struct inode *inode = first->wb_context->path.dentry->d_inode;
int flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
int priority = flush_task_priority(how);
struct rpc_message msg = {
.rpc_argp = &data->args,
.rpc_resp = &data->res,
.rpc_cred = first->wb_context->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = NFS_CLIENT(inode),
.rpc_message = &msg,
.callback_ops = &nfs_commit_ops,
.callback_data = data,
.flags = flags,
......@@ -1166,7 +1184,7 @@ static void nfs_commit_rpcsetup(struct list_head *head,
list_splice_init(head, &data->pages);
data->inode = inode;
data->cred = first->wb_context->cred;
data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(data->inode);
/* Note: we always request a commit of the entire inode */
......@@ -1178,10 +1196,12 @@ static void nfs_commit_rpcsetup(struct list_head *head,
nfs_fattr_init(&data->fattr);
/* Set up the initial task struct. */
NFS_PROTO(inode)->commit_setup(data, &msg);
rpc_init_task(&data->task, &task_setup_data);
NFS_PROTO(inode)->commit_setup(data, how);
dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
nfs_execute_write(data);
}
/*
......@@ -1201,7 +1221,6 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
/* Set up the argument struct */
nfs_commit_rpcsetup(head, data, how);
nfs_execute_write(data);
return 0;
out_bad:
while (!list_empty(head)) {
......
include/linux/nfs_xdr.h
浏览文件 @ bdc7f021
......@@ -816,11 +816,11 @@ struct nfs_rpc_ops {
struct nfs_pathconf *);
int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
__be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
void (*read_setup) (struct nfs_read_data *);
void (*read_setup) (struct nfs_read_data *, struct rpc_message *);
int (*read_done) (struct rpc_task *, struct nfs_read_data *);
void (*write_setup) (struct nfs_write_data *, int how);
void (*write_setup) (struct nfs_write_data *, struct rpc_message *);
int (*write_done) (struct rpc_task *, struct nfs_write_data *);
void (*commit_setup) (struct nfs_write_data *, int how);
void (*commit_setup) (struct nfs_write_data *, struct rpc_message *);
int (*commit_done) (struct rpc_task *, struct nfs_write_data *);
int (*file_open) (struct inode *, struct file *);
int (*file_release) (struct inode *, struct file *);
......
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