Commit 98ca3ee6 authored by Trond Myklebust's avatar Trond Myklebust Committed by Anna Schumaker
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NFSv4: Just don't cache negative dentries on case insensitive servers 



If the directory contents change, we cannot rely on the negative dentry
being cacheable.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 1ab5be4a

fs/nfs/dir.c

+3 −0
Original line number Diff line number Diff line
@@ -1436,6 +1436,9 @@ int nfs_neg_need_reval(struct inode *dir, struct dentry *dentry, 
		return 0;

	if (NFS_SERVER(dir)->flags & NFS_MOUNT_LOOKUP_CACHE_NONEG)

		return 1;

	/* Case insensitive server? Revalidate negative dentries */

	if (nfs_server_capable(dir, NFS_CAP_CASE_INSENSITIVE))

		return 1;

	return !nfs_check_verifier(dir, dentry, flags & LOOKUP_RCU);

}