tree 9fab60c4898e49cf1cf04e360dc63ae1d0ef5bd2
parent 85bfb4da8cad483a4e550ec89060d05a4daf895b
author Dan Williams <dan.j.williams@intel.com> 1193111111 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1193153526 -0700

md: raid5: fix clearing of biofill operations

ops_complete_biofill() runs outside of spin_lock(&sh->lock) and clears the
'pending' and 'ack' bits.  Since the test_and_ack_op() macro only checks
against 'complete' it can get an inconsistent snapshot of pending work.

Move the clearing of these bits to handle_stripe5(), under the lock.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Tested-by: Joel Bertrand <joel.bertrand@systella.fr>
Signed-off-by: Neil Brown <neilb@suse.de>
Cc: Stable <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>