5.0-stable patches

[thirdparty/kernel/stable-queue.git] / releases / 2.6.33.2 / nfsv4-don-t-ignore-the-nfs_ino_reval_forced-flag-in-nfs_revalidate_inode.patch

From b4d2314bb88b07e5a04e6c75b442a1dfcd60e340 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Wed, 10 Mar 2010 15:21:44 -0500
Subject: NFSv4: Don't ignore the NFS_INO_REVAL_FORCED flag in nfs_revalidate_inode()

From: Trond Myklebust <Trond.Myklebust@netapp.com>

commit b4d2314bb88b07e5a04e6c75b442a1dfcd60e340 upstream.

If the NFS_INO_REVAL_FORCED flag is set, that means that we don't yet have
an up to date attribute cache. Even if we hold a delegation, we must
put a GETATTR on the wire.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 fs/nfs/delegation.h |    6 ++++++
 fs/nfs/dir.c        |    2 +-
 fs/nfs/inode.c      |    2 +-
 3 files changed, 8 insertions(+), 2 deletions(-)

--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -71,4 +71,10 @@ static inline int nfs_inode_return_deleg
 }
 #endif
 
+static inline int nfs_have_delegated_attributes(struct inode *inode)
+{
+	return nfs_have_delegation(inode, FMODE_READ) &&
+		!(NFS_I(inode)->cache_validity & NFS_INO_REVAL_FORCED);
+}
+
 #endif
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1789,7 +1789,7 @@ static int nfs_access_get_cached(struct
 	cache = nfs_access_search_rbtree(inode, cred);
 	if (cache == NULL)
 		goto out;
-	if (!nfs_have_delegation(inode, FMODE_READ) &&
+	if (!nfs_have_delegated_attributes(inode) &&
 	    !time_in_range_open(jiffies, cache->jiffies, cache->jiffies + nfsi->attrtimeo))
 		goto out_stale;
 	res->jiffies = cache->jiffies;
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -759,7 +759,7 @@ int nfs_attribute_timeout(struct inode *
 {
 	struct nfs_inode *nfsi = NFS_I(inode);
 
-	if (nfs_have_delegation(inode, FMODE_READ))
+	if (nfs_have_delegated_attributes(inode))
 		return 0;
 	return !time_in_range_open(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
 }