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| author | Jeff Layton <jlayton@redhat.com> | 2010-09-28 09:14:01 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-09-29 14:42:30 -0400 |
| commit | a00dd6c03dd97a777c291a8af8682be4b5fadf8d (patch) | |
| tree | 184600accd17f16115becb5f3454f18e88987643 | |
| parent | 5c78f58e2d5cef65c255a556184f1f43c8d84c84 (diff) | |
| download | kernel_samsung_aries-a00dd6c03dd97a777c291a8af8682be4b5fadf8d.zip kernel_samsung_aries-a00dd6c03dd97a777c291a8af8682be4b5fadf8d.tar.gz kernel_samsung_aries-a00dd6c03dd97a777c291a8af8682be4b5fadf8d.tar.bz2 | |
NFS: don't use FLUSH_SYNC on WB_SYNC_NONE COMMIT calls (try #2)
WB_SYNC_NONE is supposed to mean "don't wait on anything". That should
also include not waiting for COMMIT calls to complete.
WB_SYNC_NONE is also implied when wbc->nonblocking and
wbc->for_background are set, so we can replace those checks in
nfs_commit_unstable_pages with a check for WB_SYNC_NONE.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | fs/nfs/write.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 4d6d35d..605e292 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1431,15 +1431,17 @@ static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_contr int flags = FLUSH_SYNC; int ret = 0; - /* Don't commit yet if this is a non-blocking flush and there are - * lots of outstanding writes for this mapping. - */ - if (wbc->sync_mode == WB_SYNC_NONE && - nfsi->ncommit <= (nfsi->npages >> 1)) - goto out_mark_dirty; + if (wbc->sync_mode == WB_SYNC_NONE) { + /* Don't commit yet if this is a non-blocking flush and there + * are a lot of outstanding writes for this mapping. + */ + if (nfsi->ncommit <= (nfsi->npages >> 1)) + goto out_mark_dirty; - if (wbc->nonblocking || wbc->for_background) + /* don't wait for the COMMIT response */ flags = 0; + } + ret = nfs_commit_inode(inode, flags); if (ret >= 0) { if (wbc->sync_mode == WB_SYNC_NONE) { |