NeilBrown d8091fda78 md/raid5: fix bug that could result in reads from a failed device. ...

commit 355840e7a7 upstream.

commit a847627709 in linux-3.0.9
attempted to backport this to 3.0 but only made one change were two
were necessary.  This add the second change.

This bug was introduced in 415e72d034
which was in 2.6.36.

There is a small window of time between when a device fails and when
it is removed from the array.  During this time we might still read
from it, but we won't write to it - so it is possible that we could
read stale data.

We didn't need the test of 'Faulty' before because the test on
In_sync is sufficient.  Since we started allowing reads from the early
part of non-In_sync devices we need a test on Faulty too.

This is suitable for any kernel from 2.6.36 onwards, though the patch
might need a bit of tweaking in 3.0 and earlier.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2011-12-21 12:57:42 -08:00

..

bitmap.c

md/bitmap: remove unused fields from struct bitmap

2011-06-09 11:43:01 +10:00

bitmap.h

md/bitmap: remove unused fields from struct bitmap

2011-06-09 11:43:01 +10:00

dm-bio-record.h

…

dm-crypt.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm

2011-03-25 20:51:44 -07:00

dm-delay.c

…

dm-exception-store.c

…

dm-exception-store.h

…

dm-flakey.c

dm: add flakey target

2011-03-24 13:54:24 +00:00

dm-io.c

dm io: flush cpu cache with vmapped io

2011-08-04 21:58:42 -07:00

dm-ioctl.c

dm ioctl: add flag to wipe buffers for secure data

2011-03-24 13:54:30 +00:00

dm-kcopyd.c

dm kcopyd: return client directly and not through a pointer

2011-05-29 13:03:13 +01:00

dm-linear.c

…

dm-log-userspace-base.c

…

dm-log-userspace-transfer.c

…

dm-log-userspace-transfer.h

…

dm-log.c

dm io: use fixed initial mempool size

2011-05-29 13:03:09 +01:00

dm-mpath.c

dm mpath: fix potential NULL pointer in feature arg processing

2011-08-04 21:58:43 -07:00

dm-mpath.h

…

dm-path-selector.c

…

dm-path-selector.h

…

dm-queue-length.c

…

dm-raid1.c

dm kcopyd: return client directly and not through a pointer

2011-05-29 13:03:13 +01:00

dm-raid.c

md/dm - remove remains of plug_fn callback.

2011-04-18 18:25:41 +10:00

dm-region-hash.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

dm-round-robin.c

…

dm-service-time.c

…

dm-snap-persistent.c

dm snapshot: flush disk cache when merging

2011-08-04 21:58:42 -07:00

dm-snap-transient.c

…

dm-snap.c

dm kcopyd: return client directly and not through a pointer

2011-05-29 13:03:13 +01:00

dm-stripe.c

dm stripe: implement merge method

2011-03-24 13:54:35 +00:00

dm-sysfs.c

…

dm-table.c

dm table: avoid crash if integrity profile changes

2011-10-16 14:14:53 -07:00

dm-target.c

…

dm-uevent.c

…

dm-uevent.h

…

dm-zero.c

…

dm.c

dm: fix idr leak on module removal

2011-08-04 21:58:43 -07:00

dm.h

block: Require subsystems to explicitly allocate bio_set integrity mempool

2011-03-17 11:11:05 +01:00

faulty.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

Kconfig

dm: add flakey target

2011-03-24 13:54:24 +00:00

linear.c

block: Require subsystems to explicitly allocate bio_set integrity mempool

2011-03-17 11:11:05 +01:00

linear.h

md/linear: avoid corrupting structure while waiting for rcu_free to complete.

2011-10-03 11:40:03 -07:00

Makefile

dm: add flakey target

2011-03-24 13:54:24 +00:00

md.c

md: Avoid waking up a thread after it has been freed.

2011-10-16 14:14:53 -07:00

md.h

md: Avoid waking up a thread after it has been freed.

2011-10-16 14:14:53 -07:00

multipath.c

md: Avoid waking up a thread after it has been freed.

2011-10-16 14:14:53 -07:00

multipath.h

md/multipath: discard ->working_disks in favour of ->degraded

2011-05-11 14:38:02 +10:00

raid0.c

block: Require subsystems to explicitly allocate bio_set integrity mempool

2011-03-17 11:11:05 +01:00

raid0.h

…

raid1.c

md: Avoid waking up a thread after it has been freed.

2011-10-16 14:14:53 -07:00

raid1.h

MD: raid1 changes to allow use by device mapper

2011-06-08 15:11:31 +10:00

raid5.c

md/raid5: fix bug that could result in reads from a failed device.

2011-12-21 12:57:42 -08:00

raid5.h

md - remove old plugging code.

2011-04-18 18:25:42 +10:00

raid10.c

md: Avoid waking up a thread after it has been freed.

2011-10-16 14:14:53 -07:00

raid10.h

Fix common misspellings

2011-03-31 11:26:23 -03:00