nfs/filelayout: set layoutcommit depending on write verifier
Following http://www.rfc-editor.org/errata_search.php?rfc=5661&eid=2751
Don't set layoutcommit for commit_through_mds case.
For FILE_SYNC writes, don't set layoutcommit.
For DATA_SYNC wirtes, set layout commit right after wirtes done.
For UNSTABLE writes, set layout commit when commit done.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c
index 9097807..163cad1 100644
--- a/fs/nfs/filelayout/filelayout.c
+++ b/fs/nfs/filelayout/filelayout.c
@@ -265,7 +265,7 @@
{
if (FILELAYOUT_LSEG(hdr->lseg)->commit_through_mds ||
- hdr->res.verf->committed == NFS_FILE_SYNC)
+ hdr->res.verf->committed != NFS_DATA_SYNC)
return;
pnfs_set_layoutcommit(hdr);
@@ -403,6 +403,9 @@
return -EAGAIN;
}
+ if (data->verf.committed == NFS_UNSTABLE)
+ pnfs_commit_set_layoutcommit(data);
+
return 0;
}