On Thu, 2011-10-06 at 19:12 +0900, Toshiyuki Okajima wrote:

With Miklos' patches applies to -rc8, I could display
"Couldn't remount RDWR because of unprocessed orphan inode list".
on my x86_64 machine by my reproducer.

Because actual removal starts from over a range between mnt_want_write() and
mnt_drop_write() even if do_unlinkat() or do_rmdir() calls mnt_want_write()
and mnt_drop_write() to prevent a filesystem from re-mounting read-only.

Thanks for the reproducer.

I'm looking at this now...

Miklos