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Code Issues Releases Wiki Activity

NFSv4: Don't call put_rpccred() under the rcu_read_lock() 

commit 7c0af9ffb7bb4e5355470fa60b3eb711ddf226fa upstream.

put_rpccred() can sleep.

Fixes: 8f649c3762 ("NFSv4: Fix the locking in nfs_inode_reclaim_delegation()")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@huawei.com>
This commit is contained in:
Trond Myklebust 2015-02-26 12:54:46 -05:00 committed by Zefan Li
parent c7ef03ccf7
commit deee5f87a9
1 changed files with 1 additions and 1 deletions
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2
fs/nfs/delegation.c
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@ -148,8 +148,8 @@ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred,
&delegation->flags);
NFS_I(inode)->delegation_state = delegation->type;
spin_unlock(&delegation->lock);
put_rpccred(oldcred);
rcu_read_unlock();
put_rpccred(oldcred);
} else {
/* We appear to have raced with a delegation return. */
spin_unlock(&delegation->lock);