btrfs: start transaction in xattr_handler_set_prop

btrfs specific extended attributes on the inode are set using
btrfs_xattr_handler_set_prop(), and the required transaction for this
update is started by btrfs_setxattr(). For better visibility of the
transaction start and end, do this in btrfs_xattr_handler_set_prop().
For which this patch copied code of btrfs_setxattr() as it is in the
original, which needs proper error handling.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 09db8f5..78b6ba2 100644 (file)
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -372,12 +372,31 @@ static int btrfs_xattr_handler_set_prop(const struct xattr_handler *handler,
                                        size_t size, int flags)
 {
        int ret;
+       struct btrfs_trans_handle *trans;
+       struct btrfs_root *root = BTRFS_I(inode)->root;
 
        name = xattr_full_name(handler, name);
        ret = btrfs_validate_prop(name, value, size);
        if (ret)
                return ret;
-       return btrfs_set_prop_trans(inode, name, value, size, flags);
+
+       trans = btrfs_start_transaction(root, 2);
+       if (IS_ERR(trans))
+               return PTR_ERR(trans);
+
+       ret = btrfs_set_prop(trans, inode, name, value, size, flags);
+       if (!ret) {
+               inode_inc_iversion(inode);
+               inode->i_ctime = current_time(inode);
+               set_bit(BTRFS_INODE_COPY_EVERYTHING,
+                       &BTRFS_I(inode)->runtime_flags);
+               ret = btrfs_update_inode(trans, root, inode);
+               BUG_ON(ret);
+       }
+
+       btrfs_end_transaction(trans);
+
+       return ret;
 }
 
 static const struct xattr_handler btrfs_security_xattr_handler = {