NeilBrown a847627709 md/raid5: fix bug that could result in reads from a failed device. ...

commit 355840e7a7e56bb2834fd3b0da64da5465f8aeaa upstream.

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>

2011-11-11 09:35:53 -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: convert workqueues to alloc_ordered

2011-01-13 19:59:57 +00:00

dm-exception-store.c

dm snapshot: test chunk size against both origin and snapshot

2010-08-12 04:13:51 +01:00

dm-exception-store.h

dm snapshot: test chunk size against both origin and snapshot

2010-08-12 04:13:51 +01:00

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: use dm_target_offset macro

2010-08-12 04:14:11 +01:00

dm-log-userspace-base.c

dm log userspace: add version number to comms

2011-01-13 19:59:52 +00:00

dm-log-userspace-transfer.c

netlink: kill eff_cap from struct netlink_skb_parms

2011-03-03 13:32:07 -08:00

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

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

dm-snap-persistent.c

dm snapshot: flush disk cache when merging

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

dm-snap-transient.c

dm snapshot: move cow ref from exception store to snap core

2009-12-10 23:52:12 +00:00

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

Driver core: Constify struct sysfs_ops in struct kobj_type

2010-03-07 17:04:49 -08:00

dm-table.c

dm table: avoid crash if integrity profile changes

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

dm-target.c

dm: error return error for discards

2010-08-12 04:14:14 +01:00

dm-uevent.c

dm table: remove dm_get from dm_table_get_md

2010-03-06 02:29:52 +00:00

dm-uevent.h

…

dm-zero.c

dm: zero silently drop discards

2010-08-12 04:14:12 +01:00

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

md: fix handling of array level takeover that re-arranges devices.

2010-06-24 13:33:24 +10:00

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.

2011-11-11 09:35:53 -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