[v2,09/20] NFSv4: Hold the delegation spinlock when updating the seqid
diff mbox series

Message ID 20191031224051.8923-10-trond.myklebust@hammerspace.com
State New
Headers show
Series
  • Delegation bugfixes
Related show

Commit Message

Trond Myklebust Oct. 31, 2019, 10:40 p.m. UTC
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
 fs/nfs/delegation.c | 2 ++
 1 file changed, 2 insertions(+)

Patch
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diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index e80419a63fb5..7ebeb57cb597 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -387,8 +387,10 @@  int nfs_inode_set_delegation(struct inode *inode, const struct cred *cred,
 		/* Is this an update of the existing delegation? */
 		if (nfs4_stateid_match_other(&old_delegation->stateid,
 					&delegation->stateid)) {
+			spin_lock(&old_delegation->lock);
 			nfs_update_inplace_delegation(old_delegation,
 					delegation);
+			spin_unlock(&old_delegation->lock);
 			goto out;
 		}
 		/*