NeilBrown 856e08e237 md/raid10: avoid reading from known bad blocks - part 1 ... This patch just covers the basic read path: 1/ read_balance needs to check for badblocks, and return not only the chosen slot, but also how many good blocks are available there. 2/ read submission must be ready to issue multiple reads to different devices as different bad blocks on different devices could mean that a single large read cannot be served by any one device, but can still be served by the array. This requires keeping count of the number of outstanding requests per bio. This count is stored in 'bi_phys_segments' On read error we currently just fail the request if another target cannot handle the whole request. Next patch refines that a bit. Signed-off-by: NeilBrown <neilb@suse.de>		2011-07-28 11:39:23 +10:00
..
bitmap.c	MD bitmap: Revert DM dirty log hooks	2011-07-27 11:00:37 +10:00
bitmap.h	MD bitmap: Revert DM dirty log hooks	2011-07-27 11:00:37 +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: use fixed initial mempool size	2011-05-29 13:03:09 +01:00
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: userspace add luid to distinguish between concurrent log instances	2009-09-04 20:40:34 +01:00
dm-log.c	dm io: use fixed initial mempool size	2011-05-29 13:03:09 +01:00
dm-mpath.c	dm mpath: do not fail paths after integrity errors	2011-05-29 13:02:55 +01:00
dm-mpath.h
dm-path-selector.c	dm: path selector use module refcount directly	2009-04-02 19:55:27 +01:00
dm-path-selector.h	dm mpath: add start_io and nr_bytes to path selectors	2009-06-22 10:12:27 +01:00
dm-queue-length.c	dm mpath: add queue length load balancer	2009-06-22 10:12:27 +01:00
dm-raid.c	md/dm - remove remains of plug_fn callback.	2011-04-18 18:25:41 +10:00
dm-raid1.c	dm kcopyd: return client directly and not through a pointer	2011-05-29 13:03:13 +01:00
dm-region-hash.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
dm-round-robin.c	dm mpath: add start_io and nr_bytes to path selectors	2009-06-22 10:12:27 +01:00
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 io: use fixed initial mempool size	2011-05-29 13:03:09 +01:00
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: reject devices without request fns	2011-05-29 13:02:52 +01:00
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	block: fix non-atomic access to genhd inflight structures	2011-03-22 08:35:35 +01:00
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: use call_rcu to free obsolete 'conf' structures.	2009-06-18 08:49:42 +10:00
Makefile	dm: add flakey target	2011-03-24 13:54:24 +00:00
md.c	md: make it easier to wait for bad blocks to be acknowledged.	2011-07-28 11:31:48 +10:00
md.h	md: make it easier to wait for bad blocks to be acknowledged.	2011-07-28 11:31:48 +10:00
multipath.c	md: make error_handler functions more uniform and correct.	2011-05-11 14:38:44 +10:00
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/raid1: factor several functions out or raid1d()	2011-07-28 11:38:13 +10:00
raid1.h	md/raid1: Handle write errors by updating badblock log.	2011-07-28 11:32:41 +10:00
raid5.c	md/raid5: Clear bad blocks on successful write.	2011-07-28 11:39:23 +10:00
raid5.h	md/raid5: Clear bad blocks on successful write.	2011-07-28 11:39:23 +10:00
raid10.c	md/raid10: avoid reading from known bad blocks - part 1	2011-07-28 11:39:23 +10:00
raid10.h	md/raid10: avoid reading from known bad blocks - part 1	2011-07-28 11:39:23 +10:00