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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>
This commit is contained in:
Peng Tao 2014-08-07 10:15:03 +08:00 committed by Trond Myklebust
parent 378520b837
commit bc7d4b8fd0
1 changed files with 4 additions and 1 deletions
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5
fs/nfs/filelayout/filelayout.c
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@ -265,7 +265,7 @@ filelayout_set_layoutcommit(struct nfs_pgio_header *hdr)
{
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 @@ static int filelayout_commit_done_cb(struct rpc_task *task,
return -EAGAIN;
}
if (data->verf.committed == NFS_UNSTABLE)
pnfs_commit_set_layoutcommit(data);
return 0;
}