jffs2/jfs/xfs: switch over to 'check_acl' rather than 'permission()'

This avoids an indirect call in the VFS for each path component lookup.

Well, at least as long as you own the directory in question, and the ACL
check is unnecessary.

Reviewed-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 files changed, 14 insertions, 32 deletions

diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c
index 8fcb6239218..7edb62e9741 100644
--- a/fs/jffs2/acl.c
+++ b/fs/jffs2/acl.c
@@ -258,7 +258,7 @@ static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl)
 	return rc;
 }
 
-static int jffs2_check_acl(struct inode *inode, int mask)
+int jffs2_check_acl(struct inode *inode, int mask)
 {
 	struct posix_acl *acl;
 	int rc;
@@ -274,11 +274,6 @@ static int jffs2_check_acl(struct inode *inode, int mask)
 	return -EAGAIN;
 }
 
-int jffs2_permission(struct inode *inode, int mask)
-{
-	return generic_permission(inode, mask, jffs2_check_acl);
-}
-
 int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, int *i_mode)
 {
 	struct posix_acl *acl, *clone;
diff --git a/fs/jffs2/acl.h b/fs/jffs2/acl.h
index fc929f2a14f..f0ba63e3c36 100644
--- a/fs/jffs2/acl.h
+++ b/fs/jffs2/acl.h
@@ -26,7 +26,7 @@ struct jffs2_acl_header {
 
 #ifdef CONFIG_JFFS2_FS_POSIX_ACL
 
-extern int jffs2_permission(struct inode *, int);
+extern int jffs2_check_acl(struct inode *, int);
 extern int jffs2_acl_chmod(struct inode *);
 extern int jffs2_init_acl_pre(struct inode *, struct inode *, int *);
 extern int jffs2_init_acl_post(struct inode *);
@@ -36,7 +36,7 @@ extern struct xattr_handler jffs2_acl_default_xattr_handler;
 
 #else
 
-#define jffs2_permission			(NULL)
+#define jffs2_check_acl				(NULL)
 #define jffs2_acl_chmod(inode)			(0)
 #define jffs2_init_acl_pre(dir_i,inode,mode)	(0)
 #define jffs2_init_acl_post(inode)		(0)
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 6f60cc910f4..7aa4417e085 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -55,7 +55,7 @@ const struct inode_operations jffs2_dir_inode_operations =
 	.rmdir =	jffs2_rmdir,
 	.mknod =	jffs2_mknod,
 	.rename =	jffs2_rename,
-	.permission =	jffs2_permission,
+	.check_acl =	jffs2_check_acl,
 	.setattr =	jffs2_setattr,
 	.setxattr =	jffs2_setxattr,
 	.getxattr =	jffs2_getxattr,
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index 23c94753986..b7b74e29914 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -56,7 +56,7 @@ const struct file_operations jffs2_file_operations =
 
 const struct inode_operations jffs2_file_inode_operations =
 {
-	.permission =	jffs2_permission,
+	.check_acl =	jffs2_check_acl,
 	.setattr =	jffs2_setattr,
 	.setxattr =	jffs2_setxattr,
 	.getxattr =	jffs2_getxattr,
diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c
index b7339c3b6ad..4ec11e8bda8 100644
--- a/fs/jffs2/symlink.c
+++ b/fs/jffs2/symlink.c
@@ -21,7 +21,7 @@ const struct inode_operations jffs2_symlink_inode_operations =
 {
 	.readlink =	generic_readlink,
 	.follow_link =	jffs2_follow_link,
-	.permission =	jffs2_permission,
+	.check_acl =	jffs2_check_acl,
 	.setattr =	jffs2_setattr,
 	.setxattr =	jffs2_setxattr,
 	.getxattr =	jffs2_getxattr,
diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
index a29c7c3e3fb..d66477c3430 100644
--- a/fs/jfs/acl.c
+++ b/fs/jfs/acl.c
@@ -114,7 +114,7 @@ out:
 	return rc;
 }
 
-static int jfs_check_acl(struct inode *inode, int mask)
+int jfs_check_acl(struct inode *inode, int mask)
 {
 	struct posix_acl *acl = jfs_get_acl(inode, ACL_TYPE_ACCESS);
 
@@ -129,11 +129,6 @@ static int jfs_check_acl(struct inode *inode, int mask)
 	return -EAGAIN;
 }
 
-int jfs_permission(struct inode *inode, int mask)
-{
-	return generic_permission(inode, mask, jfs_check_acl);
-}
-
 int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir)
 {
 	struct posix_acl *acl = NULL;
diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index 7f6063acaa3..2b70fa78e4a 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -96,7 +96,7 @@ const struct inode_operations jfs_file_inode_operations = {
 	.removexattr	= jfs_removexattr,
 #ifdef CONFIG_JFS_POSIX_ACL
 	.setattr	= jfs_setattr,
-	.permission	= jfs_permission,
+	.check_acl	= jfs_check_acl,
 #endif
 };
 
diff --git a/fs/jfs/jfs_acl.h b/fs/jfs/jfs_acl.h
index 88475f10a38..b07bd417ef8 100644
--- a/fs/jfs/jfs_acl.h
+++ b/fs/jfs/jfs_acl.h
@@ -20,7 +20,7 @@
 
 #ifdef CONFIG_JFS_POSIX_ACL
 
-int jfs_permission(struct inode *, int);
+int jfs_check_acl(struct inode *, int);
 int jfs_init_acl(tid_t, struct inode *, struct inode *);
 int jfs_setattr(struct dentry *, struct iattr *);
 
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 514ee2edb92..c79a4270f08 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1543,7 +1543,7 @@ const struct inode_operations jfs_dir_inode_operations = {
 	.removexattr	= jfs_removexattr,
 #ifdef CONFIG_JFS_POSIX_ACL
 	.setattr	= jfs_setattr,
-	.permission	= jfs_permission,
+	.check_acl	= jfs_check_acl,
 #endif
 };
 
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 8070b34cc28..6c32f1d63d8 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -485,14 +485,6 @@ xfs_vn_put_link(
 }
 
 STATIC int
-xfs_vn_permission(
-	struct inode		*inode,
-	int			mask)
-{
-	return generic_permission(inode, mask, xfs_check_acl);
-}
-
-STATIC int
 xfs_vn_getattr(
 	struct vfsmount		*mnt,
 	struct dentry		*dentry,
@@ -696,7 +688,7 @@ xfs_vn_fiemap(
 }
 
 static const struct inode_operations xfs_inode_operations = {
-	.permission		= xfs_vn_permission,
+	.check_acl		= xfs_check_acl,
 	.truncate		= xfs_vn_truncate,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
@@ -724,7 +716,7 @@ static const struct inode_operations xfs_dir_inode_operations = {
 	.rmdir			= xfs_vn_unlink,
 	.mknod			= xfs_vn_mknod,
 	.rename			= xfs_vn_rename,
-	.permission		= xfs_vn_permission,
+	.check_acl		= xfs_check_acl,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
 	.setxattr		= generic_setxattr,
@@ -749,7 +741,7 @@ static const struct inode_operations xfs_dir_ci_inode_operations = {
 	.rmdir			= xfs_vn_unlink,
 	.mknod			= xfs_vn_mknod,
 	.rename			= xfs_vn_rename,
-	.permission		= xfs_vn_permission,
+	.check_acl		= xfs_check_acl,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
 	.setxattr		= generic_setxattr,
@@ -762,7 +754,7 @@ static const struct inode_operations xfs_symlink_inode_operations = {
 	.readlink		= generic_readlink,
 	.follow_link		= xfs_vn_follow_link,
 	.put_link		= xfs_vn_put_link,
-	.permission		= xfs_vn_permission,
+	.check_acl		= xfs_check_acl,
 	.getattr		= xfs_vn_getattr,
 	.setattr		= xfs_vn_setattr,
 	.setxattr		= generic_setxattr,