btrfs: Switch to generic xattr handlers
The btrfs_{set,remove}xattr inode operations check for a read-only root
(btrfs_root_readonly) before calling into generic_{set,remove}xattr. If
this check is moved into __btrfs_setxattr, we can get rid of
btrfs_{set,remove}xattr.
This patch applies to mainline, I would like to keep it together with
the other xattr cleanups if possible, though. Could you please review?
Thanks,
Andreas
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 41a5688..0077b3b 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -10160,10 +10160,10 @@
.symlink = btrfs_symlink,
.setattr = btrfs_setattr,
.mknod = btrfs_mknod,
- .setxattr = btrfs_setxattr,
+ .setxattr = generic_setxattr,
.getxattr = generic_getxattr,
.listxattr = btrfs_listxattr,
- .removexattr = btrfs_removexattr,
+ .removexattr = generic_removexattr,
.permission = btrfs_permission,
.get_acl = btrfs_get_acl,
.set_acl = btrfs_set_acl,
@@ -10237,10 +10237,10 @@
static const struct inode_operations btrfs_file_inode_operations = {
.getattr = btrfs_getattr,
.setattr = btrfs_setattr,
- .setxattr = btrfs_setxattr,
+ .setxattr = generic_setxattr,
.getxattr = generic_getxattr,
.listxattr = btrfs_listxattr,
- .removexattr = btrfs_removexattr,
+ .removexattr = generic_removexattr,
.permission = btrfs_permission,
.fiemap = btrfs_fiemap,
.get_acl = btrfs_get_acl,
@@ -10251,10 +10251,10 @@
.getattr = btrfs_getattr,
.setattr = btrfs_setattr,
.permission = btrfs_permission,
- .setxattr = btrfs_setxattr,
+ .setxattr = generic_setxattr,
.getxattr = generic_getxattr,
.listxattr = btrfs_listxattr,
- .removexattr = btrfs_removexattr,
+ .removexattr = generic_removexattr,
.get_acl = btrfs_get_acl,
.set_acl = btrfs_set_acl,
.update_time = btrfs_update_time,
@@ -10265,10 +10265,10 @@
.getattr = btrfs_getattr,
.setattr = btrfs_setattr,
.permission = btrfs_permission,
- .setxattr = btrfs_setxattr,
+ .setxattr = generic_setxattr,
.getxattr = generic_getxattr,
.listxattr = btrfs_listxattr,
- .removexattr = btrfs_removexattr,
+ .removexattr = generic_removexattr,
.update_time = btrfs_update_time,
};
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 03224b0..3bfb252 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -237,6 +237,9 @@
struct btrfs_root *root = BTRFS_I(inode)->root;
int ret;
+ if (btrfs_root_readonly(root))
+ return -EROFS;
+
if (trans)
return do_setxattr(trans, inode, name, value, size, flags);
@@ -432,25 +435,6 @@
NULL,
};
-int btrfs_setxattr(struct dentry *dentry, const char *name, const void *value,
- size_t size, int flags)
-{
- struct btrfs_root *root = BTRFS_I(d_inode(dentry))->root;
-
- if (btrfs_root_readonly(root))
- return -EROFS;
- return generic_setxattr(dentry, name, value, size, flags);
-}
-
-int btrfs_removexattr(struct dentry *dentry, const char *name)
-{
- struct btrfs_root *root = BTRFS_I(d_inode(dentry))->root;
-
- if (btrfs_root_readonly(root))
- return -EROFS;
- return generic_removexattr(dentry, name);
-}
-
static int btrfs_initxattrs(struct inode *inode,
const struct xattr *xattr_array, void *fs_info)
{
diff --git a/fs/btrfs/xattr.h b/fs/btrfs/xattr.h
index 96807b3..15fc474 100644
--- a/fs/btrfs/xattr.h
+++ b/fs/btrfs/xattr.h
@@ -28,9 +28,6 @@
extern int __btrfs_setxattr(struct btrfs_trans_handle *trans,
struct inode *inode, const char *name,
const void *value, size_t size, int flags);
-extern int btrfs_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags);
-extern int btrfs_removexattr(struct dentry *dentry, const char *name);
extern int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
struct inode *inode, struct inode *dir,