Hi.
While the previous patch set [1] aimed to address the ABBA deadlock between
inode reclaiming and deleted inode writing, I discovered that the problem
still persists in the form of an AA deadlock after applying those changes.
The core issue is that although [1] avoids the ABBA deadlock by getting the
xattr inodes before locking BASEHD's wbuf->io_mutex. But the inode reclaiming
process can still get stuck waiting for the xattr inodes that have already
been marked as I_FREEING.