xfs: use generic Posix ACL code

This patch rips out the XFS ACL handling code and uses the generic
fs/posix_acl.c code instead.  The ondisk format is of course left
unchanged.

This also introduces the same ACL caching all other Linux filesystems do
by adding pointers to the acl and default acl in struct xfs_inode.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index f879c1bc4b96..77016702938b 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -18,6 +18,7 @@
 #ifndef __XFS_INODE_H__
 #define __XFS_INODE_H__
 
+struct posix_acl;
 struct xfs_dinode;
 struct xfs_inode;
 
@@ -272,6 +273,11 @@ typedef struct xfs_inode {
         /* VFS inode */
         struct inode            i_vnode;        /* embedded VFS inode */
 
+#ifdef CONFIG_XFS_POSIX_ACL
+        struct posix_acl        *i_acl;
+        struct posix_acl        *i_default_acl;
+#endif
+
         /* Trace buffers per inode. */
 #ifdef XFS_INODE_TRACE
         struct ktrace           *i_trace;       /* general inode trace */