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NFS: Ensure that rpc_run_task() errors are propagated back to the caller 

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2008-04-14 14:54:53 -04:00
parent c9d8f89d98
commit dbae4c73f0
3 changed files with 40 additions and 26 deletions
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10
fs/nfs/direct.c
View File

@ -347,8 +347,9 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
NFS_PROTO(inode)->read_setup(data, &msg);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
if (IS_ERR(task))
break;
rpc_put_task(task);
dprintk("NFS: %5u initiated direct read call "
"(req %s/%Ld, %zu bytes @ offset %Lu)\n",
@ -763,8 +764,9 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
NFS_PROTO(inode)->write_setup(data, &msg);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
if (IS_ERR(task))
break;
rpc_put_task(task);
dprintk("NFS: %5u initiated direct write call "
"(req %s/%Ld, %zu bytes @ offset %Lu)\n",

23
fs/nfs/read.c
View File

@ -153,7 +153,7 @@ static void nfs_readpage_release(struct nfs_page *req)
/*
* Set up the NFS read request struct
*/
static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
static int nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
const struct rpc_call_ops *call_ops,
unsigned int count, unsigned int offset)
{
@ -202,8 +202,10 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
(unsigned long long)data->args.offset);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
if (IS_ERR(task))
return PTR_ERR(task);
rpc_put_task(task);
return 0;
}
static void
@ -240,6 +242,7 @@ static int nfs_pagein_multi(struct inode *inode, struct list_head *head, unsigne
size_t rsize = NFS_SERVER(inode)->rsize, nbytes;
unsigned int offset;
int requests = 0;
int ret = 0;
LIST_HEAD(list);
nfs_list_remove_request(req);
@ -261,6 +264,8 @@ static int nfs_pagein_multi(struct inode *inode, struct list_head *head, unsigne
offset = 0;
nbytes = count;
do {
int ret2;
data = list_entry(list.next, struct nfs_read_data, pages);
list_del_init(&data->pages);
@ -268,13 +273,15 @@ static int nfs_pagein_multi(struct inode *inode, struct list_head *head, unsigne
if (nbytes < rsize)
rsize = nbytes;
nfs_read_rpcsetup(req, data, &nfs_read_partial_ops,
ret2 = nfs_read_rpcsetup(req, data, &nfs_read_partial_ops,
rsize, offset);
if (ret == 0)
ret = ret2;
offset += rsize;
nbytes -= rsize;
} while (nbytes != 0);
return 0;
return ret;
out_bad:
while (!list_empty(&list)) {
@ -292,6 +299,7 @@ static int nfs_pagein_one(struct inode *inode, struct list_head *head, unsigned
struct nfs_page *req;
struct page **pages;
struct nfs_read_data *data;
int ret = -ENOMEM;
data = nfs_readdata_alloc(npages);
if (!data)
@ -307,11 +315,10 @@ 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);
return 0;
return nfs_read_rpcsetup(req, data, &nfs_read_full_ops, count, 0);
out_bad:
nfs_async_read_error(head);
return -ENOMEM;
return ret;
}
/*

33
fs/nfs/write.c
View File

@ -778,7 +778,7 @@ static int flush_task_priority(int how)
/*
* Set up the argument/result storage required for the RPC call.
*/
static void nfs_write_rpcsetup(struct nfs_page *req,
static int nfs_write_rpcsetup(struct nfs_page *req,
struct nfs_write_data *data,
const struct rpc_call_ops *call_ops,
unsigned int count, unsigned int offset,
@ -841,8 +841,10 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
(unsigned long long)data->args.offset);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
if (IS_ERR(task))
return PTR_ERR(task);
rpc_put_task(task);
return 0;
}
/* If a nfs_flush_* function fails, it should remove reqs from @head and
@ -868,6 +870,7 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned
size_t wsize = NFS_SERVER(inode)->wsize, nbytes;
unsigned int offset;
int requests = 0;
int ret = 0;
LIST_HEAD(list);
nfs_list_remove_request(req);
@ -889,6 +892,8 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned
offset = 0;
nbytes = count;
do {
int ret2;
data = list_entry(list.next, struct nfs_write_data, pages);
list_del_init(&data->pages);
@ -896,13 +901,15 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned
if (nbytes < wsize)
wsize = nbytes;
nfs_write_rpcsetup(req, data, &nfs_write_partial_ops,
ret2 = nfs_write_rpcsetup(req, data, &nfs_write_partial_ops,
wsize, offset, how);
if (ret == 0)
ret = ret2;
offset += wsize;
nbytes -= wsize;
} while (nbytes != 0);
return 0;
return ret;
out_bad:
while (!list_empty(&list)) {
@ -943,9 +950,7 @@ static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned i
req = nfs_list_entry(data->pages.next);
/* Set up the argument struct */
nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, how);
return 0;
return nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, how);
out_bad:
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
@ -1183,7 +1188,7 @@ void nfs_commitdata_release(void *data)
/*
* Set up the argument/result storage required for the RPC call.
*/
static void nfs_commit_rpcsetup(struct list_head *head,
static int nfs_commit_rpcsetup(struct list_head *head,
struct nfs_write_data *data,
int how)
{
@ -1232,8 +1237,10 @@ static void nfs_commit_rpcsetup(struct list_head *head,
dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
task = rpc_run_task(&task_setup_data);
if (!IS_ERR(task))
rpc_put_task(task);
if (IS_ERR(task))
return PTR_ERR(task);
rpc_put_task(task);
return 0;
}
/*
@ -1251,9 +1258,7 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
goto out_bad;
/* Set up the argument struct */
nfs_commit_rpcsetup(head, data, how);
return 0;
return nfs_commit_rpcsetup(head, data, how);
out_bad:
while (!list_empty(head)) {
req = nfs_list_entry(head->next);