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NFSv4: Fix nfs4_return_incompatible_delegation

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The 'fmode' argument can take an FMODE_EXEC value, which we want to
filter out before comparing to the delegation type.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust 2018-03-20 16:43:13 -04:00 • committed by Anna Schumaker
parent 2552428863
commit f50862423f
1 changed files with 1 additions and 0 deletions
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1
fs/nfs/nfs4proc.c
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@ -1669,6 +1669,7 @@ static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmo
{ {
struct nfs_delegation *delegation; struct nfs_delegation *delegation;
fmode &= FMODE_READ|FMODE_WRITE;
rcu_read_lock(); rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation); delegation = rcu_dereference(NFS_I(inode)->delegation);
if (delegation == NULL || (delegation->type & fmode) == fmode) { if (delegation == NULL || (delegation->type & fmode) == fmode) {