NFSv4: Don't ignore the NFS_INO_REVAL_FORCED flag in nfs_revalidate_inode()
Trond Myklebust [Wed, 10 Mar 2010 20:21:44 +0000 (15:21 -0500)]
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>
Cc: stable@kernel.org

fs/nfs/delegation.h
fs/nfs/dir.c
fs/nfs/inode.c

index 944b627..69e7b81 100644 (file)
@@ -71,4 +71,10 @@ static inline int nfs_inode_return_delegation(struct inode *inode)
 }
 #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
index a1f6b44..c6f2750 100644 (file)
@@ -1789,7 +1789,7 @@ static int nfs_access_get_cached(struct inode *inode, struct rpc_cred *cred, str
        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;
index 657201a..e358df7 100644 (file)
@@ -729,7 +729,7 @@ int nfs_attribute_timeout(struct inode *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);
 }