btrfs: don't mess with i_nlink of unlocked inode in rename()
old_inode is not locked; it's not safe to play with its link count. Instead of bumping it and calling btrfs_unlink_inode(), add a variant of the latter that does not do btrfs_drop_nlink()/ btrfs_update_inode(), call it instead of btrfs_inc_nlink()/ btrfs_unlink_inode() and do btrfs_update_inode() ourselves. Signed-off-by:Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
parent
c2db1073
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