--- /dev/null
+From: Tiger Yang <tiger.yang@oracle.com>
+Date: Fri, 14 Nov 2008 11:17:18 +0800
+Subject: ocfs2: add ocfs2_check_acl
+Patch-mainline: 2.6.29
+
+This function is used to enhance permission checking with POSIX ACLs.
+
+Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
+Signed-off-by: Mark Fasheh <mfasheh@suse.com>
+---
+ fs/ocfs2/acl.c | 15 +++++++++++++++
+ fs/ocfs2/acl.h | 10 ++++++++++
+ fs/ocfs2/file.c | 3 ++-
+ 3 files changed, 27 insertions(+), 1 deletions(-)
+
+diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c
+index 62d0faa..a6a2bf6 100644
+--- a/fs/ocfs2/acl.c
++++ b/fs/ocfs2/acl.c
+@@ -230,6 +230,21 @@ static int ocfs2_set_acl(handle_t *handle,
+ return ret;
+ }
+
++int ocfs2_check_acl(struct inode *inode, int mask)
++{
++ struct posix_acl *acl = ocfs2_get_acl(inode, ACL_TYPE_ACCESS);
++
++ if (IS_ERR(acl))
++ return PTR_ERR(acl);
++ if (acl) {
++ int ret = posix_acl_permission(inode, acl, mask);
++ posix_acl_release(acl);
++ return ret;
++ }
++
++ return -EAGAIN;
++}
++
+ static size_t ocfs2_xattr_list_acl_access(struct inode *inode,
+ char *list,
+ size_t list_len,
+diff --git a/fs/ocfs2/acl.h b/fs/ocfs2/acl.h
+index 1b39f3e..fef10f1 100644
+--- a/fs/ocfs2/acl.h
++++ b/fs/ocfs2/acl.h
+@@ -26,4 +26,14 @@ struct ocfs2_acl_entry {
+ __le32 e_id;
+ };
+
++#ifdef CONFIG_OCFS2_FS_POSIX_ACL
++
++extern int ocfs2_check_acl(struct inode *, int);
++
++#else /* CONFIG_OCFS2_FS_POSIX_ACL*/
++
++#define ocfs2_check_acl NULL
++
++#endif /* CONFIG_OCFS2_FS_POSIX_ACL*/
++
+ #endif /* OCFS2_ACL_H */
+diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
+index 3605491..7bad7d9 100644
+--- a/fs/ocfs2/file.c
++++ b/fs/ocfs2/file.c
+@@ -56,6 +56,7 @@
+ #include "suballoc.h"
+ #include "super.h"
+ #include "xattr.h"
++#include "acl.h"
+
+ #include "buffer_head_io.h"
+
+@@ -1035,7 +1036,7 @@ int ocfs2_permission(struct inode *inode, int mask)
+ goto out;
+ }
+
+- ret = generic_permission(inode, mask, NULL);
++ ret = generic_permission(inode, mask, ocfs2_check_acl);
+
+ ocfs2_inode_unlock(inode, 0);
+ out:
+--
+1.5.6
+