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btrfs: Switch to generic xattr handlers

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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>
This commit is contained in:
Andreas Gruenbacher
2016-04-22 22:36:44 +02:00
committed by Al Viro
parent 2b88fc21ca
commit e0d46f5c6e
3 changed files with 11 additions and 30 deletions
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22
fs/btrfs/xattr.c
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@@ -237,6 +237,9 @@ int __btrfs_setxattr(struct btrfs_trans_handle *trans,
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 @@ const struct xattr_handler *btrfs_xattr_handlers[] = {
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)
{