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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>
This commit is contained in:
Linus Torvalds 2009-08-28 12:29:03 -07:00
parent 1d5ccd1c42
commit 18f4c64477
10 changed files with 14 additions and 32 deletions
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7
fs/jffs2/acl.c
View File

@ -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;

4
fs/jffs2/acl.h
View File

@ -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)

2
fs/jffs2/dir.c
View File

@ -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,

2
fs/jffs2/file.c
View File

@ -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,

2
fs/jffs2/symlink.c
View File

@ -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,

7
fs/jfs/acl.c
View File

@ -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;

2
fs/jfs/file.c
View File

@ -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
};

2
fs/jfs/jfs_acl.h
View File

@ -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 *);

2
fs/jfs/namei.c
View File

@ -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
};

16
fs/xfs/linux-2.6/xfs_iops.c
View File

@ -484,14 +484,6 @@ xfs_vn_put_link(
kfree(s);
}
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,
@ -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,