Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  fs: take the ACL checks to common code
  bury posix_acl_..._masq() variants
  kill boilerplates around posix_acl_create_masq()
  generic_acl: no need to clone acl just to push it to set_cached_acl()
  kill boilerplate around posix_acl_chmod_masq()
  reiserfs: cache negative ACLs for v1 stat format
  xfs: cache negative ACLs if there is no attribute fork
  9p: do no return 0 from ->check_acl without actually checking
  vfs: move ACL cache lookup into generic code
  CIFS: Fix oops while mounting with prefixpath
  xfs: Fix wrong return value of xfs_file_aio_write
  fix devtmpfs race
  caam: don't pass bogus S_IFCHR to debugfs_create_...()
  get rid of create_proc_entry() abuses - proc_mkdir() is there for purpose
  asus-wmi: ->is_visible() can't return negative
  fix jffs2 ACLs on big-endian with 16bit mode_t
  9p: close ACL leaks
  ocfs2_init_acl(): fix a leak
  VFS : mount lock scalability for internal mounts

1 files changed, 30 insertions, 65 deletions

diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
index 60d900fcc3d..dca2d1ded93 100644
--- a/fs/ext4/acl.c
+++ b/fs/ext4/acl.c
@@ -131,7 +131,7 @@ fail:
  *
  * inode->i_mutex: don't care
  */
-static struct posix_acl *
+struct posix_acl *
 ext4_get_acl(struct inode *inode, int type)
 {
 	int name_index;
@@ -237,29 +237,6 @@ ext4_set_acl(handle_t *handle, struct inode *inode, int type,
 	return error;
 }
 
-int
-ext4_check_acl(struct inode *inode, int mask)
-{
-	struct posix_acl *acl;
-
-	if (mask & MAY_NOT_BLOCK) {
-		if (!negative_cached_acl(inode, ACL_TYPE_ACCESS))
-			return -ECHILD;
-		return -EAGAIN;
-	}
-
-	acl = ext4_get_acl(inode, ACL_TYPE_ACCESS);
-	if (IS_ERR(acl))
-		return PTR_ERR(acl);
-	if (acl) {
-		int error = posix_acl_permission(inode, acl, mask);
-		posix_acl_release(acl);
-		return error;
-	}
-
-	return -EAGAIN;
-}
-
 /*
  * Initialize the ACLs of a new inode. Called from ext4_new_inode.
  *
@@ -282,8 +259,7 @@ ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
 			inode->i_mode &= ~current_umask();
 	}
 	if (test_opt(inode->i_sb, POSIX_ACL) && acl) {
-		struct posix_acl *clone;
-		mode_t mode;
+		mode_t mode = inode->i_mode;
 
 		if (S_ISDIR(inode->i_mode)) {
 			error = ext4_set_acl(handle, inode,
@@ -291,22 +267,15 @@ ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
 			if (error)
 				goto cleanup;
 		}
-		clone = posix_acl_clone(acl, GFP_NOFS);
-		error = -ENOMEM;
-		if (!clone)
-			goto cleanup;
-
-		mode = inode->i_mode;
-		error = posix_acl_create_masq(clone, &mode);
-		if (error >= 0) {
-			inode->i_mode = mode;
-			if (error > 0) {
-				/* This is an extended ACL */
-				error = ext4_set_acl(handle, inode,
-						     ACL_TYPE_ACCESS, clone);
-			}
+		error = posix_acl_create(&acl, GFP_NOFS, &mode);
+		if (error < 0)
+			return error;
+
+		inode->i_mode = mode;
+		if (error > 0) {
+			/* This is an extended ACL */
+			error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, acl);
 		}
-		posix_acl_release(clone);
 	}
 cleanup:
 	posix_acl_release(acl);
@@ -330,9 +299,12 @@ cleanup:
 int
 ext4_acl_chmod(struct inode *inode)
 {
-	struct posix_acl *acl, *clone;
+	struct posix_acl *acl;
+	handle_t *handle;
+	int retries = 0;
 	int error;
 
+
 	if (S_ISLNK(inode->i_mode))
 		return -EOPNOTSUPP;
 	if (!test_opt(inode->i_sb, POSIX_ACL))
@@ -340,31 +312,24 @@ ext4_acl_chmod(struct inode *inode)
 	acl = ext4_get_acl(inode, ACL_TYPE_ACCESS);
 	if (IS_ERR(acl) || !acl)
 		return PTR_ERR(acl);
-	clone = posix_acl_clone(acl, GFP_KERNEL);
-	posix_acl_release(acl);
-	if (!clone)
-		return -ENOMEM;
-	error = posix_acl_chmod_masq(clone, inode->i_mode);
-	if (!error) {
-		handle_t *handle;
-		int retries = 0;
-
-	retry:
-		handle = ext4_journal_start(inode,
-				EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
-		if (IS_ERR(handle)) {
-			error = PTR_ERR(handle);
-			ext4_std_error(inode->i_sb, error);
-			goto out;
-		}
-		error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, clone);
-		ext4_journal_stop(handle);
-		if (error == -ENOSPC &&
-		    ext4_should_retry_alloc(inode->i_sb, &retries))
-			goto retry;
+	error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode);
+	if (error)
+		return error;
+retry:
+	handle = ext4_journal_start(inode,
+			EXT4_DATA_TRANS_BLOCKS(inode->i_sb));
+	if (IS_ERR(handle)) {
+		error = PTR_ERR(handle);
+		ext4_std_error(inode->i_sb, error);
+		goto out;
 	}
+	error = ext4_set_acl(handle, inode, ACL_TYPE_ACCESS, acl);
+	ext4_journal_stop(handle);
+	if (error == -ENOSPC &&
+	    ext4_should_retry_alloc(inode->i_sb, &retries))
+		goto retry;
 out:
-	posix_acl_release(clone);
+	posix_acl_release(acl);
 	return error;
 }