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authorTrond Myklebust <Trond.Myklebust@netapp.com>2010-04-16 16:42:46 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2010-05-14 15:09:30 -0400
commitd7cf8dd01289b3c64057e38d34c2857f6633d52c (patch)
tree600143a42314da064fc0b8dec236c85f2f45d16b /fs/nfs/inode.c
parenta8ce4a8f37fef0a09a1e920c2e09f67a80426c7e (diff)
NFSv4: Allow attribute caching with 'noac' mounts if client holds a delegation
If the server has given us a delegation on a file, we _know_ that we can cache the attribute information even when the user has specified 'noac'. Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/inode.c')
-rw-r--r--fs/nfs/inode.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 2fe6657a504..099b3518fee 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -742,9 +742,14 @@ int nfs_attribute_timeout(struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
+ return !time_in_range_open(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
+}
+
+static int nfs_attribute_cache_expired(struct inode *inode)
+{
if (nfs_have_delegated_attributes(inode))
return 0;
- return !time_in_range_open(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
+ return nfs_attribute_timeout(inode);
}
/**
@@ -757,7 +762,7 @@ int nfs_attribute_timeout(struct inode *inode)
int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
{
if (!(NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATTR)
- && !nfs_attribute_timeout(inode))
+ && !nfs_attribute_cache_expired(inode))
return NFS_STALE(inode) ? -ESTALE : 0;
return __nfs_revalidate_inode(server, inode);
}
@@ -794,7 +799,8 @@ int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
int ret = 0;
if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
- || nfs_attribute_timeout(inode) || NFS_STALE(inode)) {
+ || nfs_attribute_cache_expired(inode)
+ || NFS_STALE(inode)) {
ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (ret < 0)
goto out;