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-rw-r--r--fs/nfs/write.c44
1 files changed, 28 insertions, 16 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 53ff70e23993..de38d63aa920 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -201,6 +201,7 @@ static int nfs_set_page_writeback(struct page *page)
struct inode *inode = page->mapping->host;
struct nfs_server *nfss = NFS_SERVER(inode);
+ page_cache_get(page);
if (atomic_long_inc_return(&nfss->writeback) >
NFS_CONGESTION_ON_THRESH) {
set_bdi_congested(&nfss->backing_dev_info,
@@ -216,6 +217,7 @@ static void nfs_end_page_writeback(struct page *page)
struct nfs_server *nfss = NFS_SERVER(inode);
end_page_writeback(page);
+ page_cache_release(page);
if (atomic_long_dec_return(&nfss->writeback) < NFS_CONGESTION_OFF_THRESH)
clear_bdi_congested(&nfss->backing_dev_info, BLK_RW_ASYNC);
}
@@ -421,6 +423,7 @@ static void
nfs_mark_request_dirty(struct nfs_page *req)
{
__set_page_dirty_nobuffers(req->wb_page);
+ __mark_inode_dirty(req->wb_page->mapping->host, I_DIRTY_DATASYNC);
}
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
@@ -660,9 +663,11 @@ static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page,
req = nfs_setup_write_request(ctx, page, offset, count);
if (IS_ERR(req))
return PTR_ERR(req);
+ nfs_mark_request_dirty(req);
/* Update file length */
nfs_grow_file(page, offset, count);
nfs_mark_uptodate(page, req->wb_pgbase, req->wb_bytes);
+ nfs_mark_request_dirty(req);
nfs_clear_page_tag_locked(req);
return 0;
}
@@ -739,8 +744,6 @@ int nfs_updatepage(struct file *file, struct page *page,
status = nfs_writepage_setup(ctx, page, offset, count);
if (status < 0)
nfs_set_pageerror(page);
- else
- __set_page_dirty_nobuffers(page);
dprintk("NFS: nfs_updatepage returns %d (isize %lld)\n",
status, (long long)i_size_read(inode));
@@ -749,13 +752,12 @@ int nfs_updatepage(struct file *file, struct page *page,
static void nfs_writepage_release(struct nfs_page *req)
{
+ struct page *page = req->wb_page;
- if (PageError(req->wb_page) || !nfs_reschedule_unstable_write(req)) {
- nfs_end_page_writeback(req->wb_page);
+ if (PageError(req->wb_page) || !nfs_reschedule_unstable_write(req))
nfs_inode_remove_request(req);
- } else
- nfs_end_page_writeback(req->wb_page);
nfs_clear_page_tag_locked(req);
+ nfs_end_page_writeback(page);
}
static int flush_task_priority(int how)
@@ -779,7 +781,6 @@ static int nfs_write_rpcsetup(struct nfs_page *req,
int how)
{
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_task *task;
struct rpc_message msg = {
@@ -794,9 +795,10 @@ static int nfs_write_rpcsetup(struct nfs_page *req,
.callback_ops = call_ops,
.callback_data = data,
.workqueue = nfsiod_workqueue,
- .flags = flags,
+ .flags = RPC_TASK_ASYNC,
.priority = priority,
};
+ int ret = 0;
/* Set up the RPC argument and reply structs
* NB: take care not to mess about with data->commit et al. */
@@ -835,10 +837,18 @@ static int nfs_write_rpcsetup(struct nfs_page *req,
(unsigned long long)data->args.offset);
task = rpc_run_task(&task_setup_data);
- if (IS_ERR(task))
- return PTR_ERR(task);
+ if (IS_ERR(task)) {
+ ret = PTR_ERR(task);
+ goto out;
+ }
+ if (how & FLUSH_SYNC) {
+ ret = rpc_wait_for_completion_task(task);
+ if (ret == 0)
+ ret = task->tk_status;
+ }
rpc_put_task(task);
- return 0;
+out:
+ return ret;
}
/* If a nfs_flush_* function fails, it should remove reqs from @head and
@@ -847,9 +857,11 @@ static int nfs_write_rpcsetup(struct nfs_page *req,
*/
static void nfs_redirty_request(struct nfs_page *req)
{
+ struct page *page = req->wb_page;
+
nfs_mark_request_dirty(req);
- nfs_end_page_writeback(req->wb_page);
nfs_clear_page_tag_locked(req);
+ nfs_end_page_writeback(page);
}
/*
@@ -1084,16 +1096,15 @@ 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);
- nfs_end_page_writeback(page);
dprintk(" marked for commit\n");
goto next;
}
dprintk(" OK\n");
remove_request:
- nfs_end_page_writeback(page);
nfs_inode_remove_request(req);
next:
nfs_clear_page_tag_locked(req);
+ nfs_end_page_writeback(page);
}
nfs_writedata_release(calldata);
}
@@ -1207,7 +1218,6 @@ static int nfs_commit_rpcsetup(struct list_head *head,
{
struct nfs_page *first = nfs_list_entry(head->next);
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_task *task;
struct rpc_message msg = {
@@ -1222,7 +1232,7 @@ static int nfs_commit_rpcsetup(struct list_head *head,
.callback_ops = &nfs_commit_ops,
.callback_data = data,
.workqueue = nfsiod_workqueue,
- .flags = flags,
+ .flags = RPC_TASK_ASYNC,
.priority = priority,
};
@@ -1252,6 +1262,8 @@ static int nfs_commit_rpcsetup(struct list_head *head,
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
+ if (how & FLUSH_SYNC)
+ rpc_wait_for_completion_task(task);
rpc_put_task(task);
return 0;
}