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linux-2.6
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NFS: Don't mark a written page as uptodate until it is on disk 

The write may fail, so we should not mark the page as uptodate until we are
certain that the data has been accepted and written to disk by the server.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2007-05-19 11:58:03 -04:00
parent d9df8d6b38
commit 44dd151d5c
1 changed files with 11 additions and 3 deletions
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14
fs/nfs/write.c
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@ -191,8 +191,6 @@ static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page,
}
/* Update file length */
nfs_grow_file(page, offset, count);
/* Set the PG_uptodate flag? */
nfs_mark_uptodate(page, offset, count);
nfs_unlock_request(req);
return 0;
}
@ -751,7 +749,12 @@ int nfs_updatepage(struct file *file, struct page *page,
static void nfs_writepage_release(struct nfs_page *req)
{
if (PageError(req->wb_page) || !nfs_reschedule_unstable_write(req)) {
if (PageError(req->wb_page)) {
nfs_end_page_writeback(req->wb_page);
nfs_inode_remove_request(req);
} else if (!nfs_reschedule_unstable_write(req)) {
/* Set the PG_uptodate flag */
nfs_mark_uptodate(req->wb_page, req->wb_pgbase, req->wb_bytes);
nfs_end_page_writeback(req->wb_page);
nfs_inode_remove_request(req);
} else
@ -1039,6 +1042,8 @@ static void nfs_writeback_done_full(struct rpc_task *task, void *calldata)
dprintk(" marked for commit\n");
goto next;
}
/* Set the PG_uptodate flag? */
nfs_mark_uptodate(page, req->wb_pgbase, req->wb_bytes);
dprintk(" OK\n");
remove_request:
nfs_end_page_writeback(page);
@ -1249,6 +1254,9 @@ static void nfs_commit_done(struct rpc_task *task, void *calldata)
* returned by the server against all stored verfs. */
if (!memcmp(req->wb_verf.verifier, data->verf.verifier, sizeof(data->verf.verifier))) {
/* We have a match */
/* Set the PG_uptodate flag */
nfs_mark_uptodate(req->wb_page, req->wb_pgbase,
req->wb_bytes);
nfs_inode_remove_request(req);
dprintk(" OK\n");
goto next;