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NFS: fix directio refcount bug on commit

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This reverts a hunk from commit 0427708657
"NFS: Clean up - Simplify reference counting in fs/nfs/direct.c"

The cleanups in that patch affect the write path, but by the time
processing hits commit the removed reference has been added back by
nfs_scan_commit_list().  Without this reversion, any page that is
sent to commit holds on to an unbalanced reference that is never
freed.  The immediate effect is an imbalance over the wire between
OPENs and CLOSEs.

Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Fred Isaman 2012-06-08 16:48:33 -04:00 committed by Trond Myklebust
parent 2d0dbc6ae8
commit 906369e43c
1 changed files with 2 additions and 2 deletions
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4
fs/nfs/direct.c
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@ -517,9 +517,9 @@ static void nfs_direct_commit_complete(struct nfs_commit_data *data)
nfs_list_remove_request(req);
if (dreq->flags == NFS_ODIRECT_RESCHED_WRITES) {
/* Note the rewrite will go through mds */
kref_get(&req->wb_kref);
nfs_mark_request_commit(req, NULL, &cinfo);
}
} else
nfs_release_request(req);
nfs_unlock_and_release_request(req);
}