[PATCH] NFS: Cache the NFSv3 acls.
Attach acls to inodes in the icache to avoid unnecessary GETACL RPC
round-trips. As long as the client doesn't retrieve any acls itself, only the
default acls of exiting directories and the default and access acls of new
directories will end up in the cache, which preserves some memory compared to
always caching the access and default acl of all files.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Olaf Kirch <okir@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 7662c51..4ceac9d 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -91,6 +91,8 @@
*/
struct nfs_delegation;
+struct posix_acl;
+
/*
* nfs fs inode data in memory
*/
@@ -144,6 +146,10 @@
atomic_t data_updates;
struct nfs_access_entry cache_access;
+#ifdef CONFIG_NFS_V3_ACL
+ struct posix_acl *acl_access;
+ struct posix_acl *acl_default;
+#endif
/*
* This is the cookie verifier used for NFSv3 readdir
@@ -480,6 +486,7 @@
struct posix_acl *acl);
extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode,
mode_t mode);
+extern void nfs3_forget_cached_acls(struct inode *inode);
#else
static inline int nfs3_proc_set_default_acl(struct inode *dir,
struct inode *inode,
@@ -487,6 +494,10 @@
{
return 0;
}
+
+static inline void nfs3_forget_cached_acls(struct inode *inode)
+{
+}
#endif /* CONFIG_NFS_V3_ACL */
/*