NFS: Separate metadata and page cache revalidation mechanisms

[pandora-kernel.git] / fs / nfs / inode.c

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index eddd0e9..69036ef 100644 (file)
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1220,7 +1220,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
                status = -ESTALE;
                /* Do we trust the cached ESTALE? */
                if (NFS_ATTRTIMEO(inode) != 0) {
-                       if (nfsi->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ATIME)) {
+                       if (nfsi->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ATIME)) {
                                /* no */
                        } else
                                goto out;
@@ -1251,8 +1251,6 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
        }
        spin_unlock(&inode->i_lock);
 
-       nfs_revalidate_mapping(inode, inode->i_mapping);
-
        if (nfsi->cache_validity & NFS_INO_INVALID_ACL)
                nfs_zap_acl_cache(inode);
 
@@ -1287,7 +1285,7 @@ int nfs_attribute_timeout(struct inode *inode)
 int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
 {
        nfs_inc_stats(inode, NFSIOS_INODEREVALIDATE);
-       if (!(NFS_I(inode)->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA))
+       if (!(NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATTR)
                        && !nfs_attribute_timeout(inode))
                return NFS_STALE(inode) ? -ESTALE : 0;
        return __nfs_revalidate_inode(server, inode);
@@ -1298,9 +1296,16 @@ int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
  * @inode - pointer to host inode
  * @mapping - pointer to mapping
  */
-void nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
+int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
 {
        struct nfs_inode *nfsi = NFS_I(inode);
+       int ret = 0;
+
+       if (NFS_STALE(inode))
+               ret = -ESTALE;
+       if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
+                       || nfs_attribute_timeout(inode))
+               ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
 
        if (nfsi->cache_validity & NFS_INO_INVALID_DATA) {
                nfs_inc_stats(inode, NFSIOS_DATAINVALIDATE);
@@ -1321,6 +1326,7 @@ void nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
                                inode->i_sb->s_id,
                                (long long)NFS_FILEID(inode));
        }
+       return ret;
 }
 
 /**