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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-04-16 16:42:46 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-05-14 15:09:30 -0400 |
| commit | d7cf8dd01289b3c64057e38d34c2857f6633d52c (patch) | |
| tree | 600143a42314da064fc0b8dec236c85f2f45d16b /fs/nfs/inode.c | |
| parent | a8ce4a8f37fef0a09a1e920c2e09f67a80426c7e (diff) | |
| download | blackbird-op-linux-d7cf8dd01289b3c64057e38d34c2857f6633d52c.tar.gz blackbird-op-linux-d7cf8dd01289b3c64057e38d34c2857f6633d52c.zip | |
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.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 2fe6657a5048..099b3518feea 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; |
