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authorJeff Layton <jlayton@poochiereds.net>2015-10-02 20:14:37 +0300
committerTrond Myklebust <trond.myklebust@primarydata.com>2015-10-02 22:43:07 +0300
commit5e99b532bb95f8e6bf39f4500f0caef070bac16d (patch)
treed4b2f5cd9eb4343b2777dee47e2c71a144b6cb22 /fs
parente92c1e0d40c50472f80820bd829645ce9fefd6c1 (diff)
downloadlinux-5e99b532bb95f8e6bf39f4500f0caef070bac16d.tar.xz
nfs4: reset states to use open_stateid when returning delegation voluntarily
When the client goes to return a delegation, it should always update any nfs4_state currently set up to use that delegation stateid to instead use the open stateid. It already does do this in some cases, particularly in the state recovery code, but not currently when the delegation is voluntarily returned (e.g. in advance of a RENAME). This causes the client to try to continue using the delegation stateid after the DELEGRETURN, e.g. in LAYOUTGET. Set the nfs4_state back to using the open stateid in nfs4_open_delegation_recall, just before clearing the NFS_DELEGATED_STATE bit. Signed-off-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/nfs4proc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 83d577085bd9..5133bb18830e 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1777,6 +1777,9 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx,
if (IS_ERR(opendata))
return PTR_ERR(opendata);
nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);
+ write_seqlock(&state->seqlock);
+ nfs4_stateid_copy(&state->stateid, &state->open_stateid);
+ write_sequnlock(&state->seqlock);
clear_bit(NFS_DELEGATED_STATE, &state->flags);
switch (type & (FMODE_READ|FMODE_WRITE)) {
case FMODE_READ|FMODE_WRITE: