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kernel-fxtec-pro1x/drivers/md
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NeilBrown fae8cc5ed0 md/raid10: fix handling of error on last working device in array. 
If we get a read error on the last working device in a RAID10 which
contains the target block, then we don't fail the device (which is
good) but we don't abort retries, which is wrong.
We end up in an infinite loop retrying the read on the one device.

This patch fixes the problem in two places:
1/ in raid10_end_read_request we don't even ask for a retry if this
   was the last usable device.  This is efficient but a little racy
   and will sometimes retry when it should not.

2/ in handle_read_error we are careful to exclude any device from
   retry which we tried to mark as faulty (that might have failed if
   it was the last device).  This is race-free but less efficient.

Signed-off-by: NeilBrown <neilb@suse.de>
2012-02-14 11:10:10 +11:00
..
persistent-data device-mapper: using EXPORT_SYBOL in dm-space-map-checker.c needs export.h 2011-11-07 10:29:10 -08:00
bitmap.c md/bitmap: be more consistent when setting new bits in memory bitmap. 2011-12-23 10:17:51 +11:00
bitmap.h md: remove typedefs: mddev_t -> struct mddev 2011-10-11 16:47:53 +11:00
dm-bio-record.h
dm-bufio.c device-mapper: dm-bufio.c needs to include module.h 2011-11-07 10:29:10 -08:00
dm-bufio.h dm: add bufio 2011-10-31 20:19:09 +00:00
dm-crypt.c dm crypt: always disable discard_zeroes_data 2011-09-25 23:26:21 +01:00
dm-delay.c dm: convert workqueues to alloc_ordered 2011-01-13 19:59:57 +00:00
dm-exception-store.c md: Add module.h to all files using it implicitly 2011-10-31 19:31:18 -04:00
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: flakey fix corrupt_bio_byte error path 2011-09-25 23:26:15 +01:00
dm-io.c dm io: flush cpu cache with vmapped io 2011-08-02 12:32:01 +01:00
dm-ioctl.c dm table: add immutable feature 2011-10-31 20:19:04 +00:00
dm-kcopyd.c dm kcopyd: add dm_kcopyd_zero to zero an area 2011-10-31 20:18:58 +00:00
dm-linear.c dm: use dm_target_offset macro 2010-08-12 04:14:11 +01:00
dm-log-userspace-base.c Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux 2011-11-06 19:44:47 -08:00
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: use vzalloc 2011-08-02 12:32:02 +01:00
dm-mpath.c dm table: share target argument parsing functions 2011-08-02 12:32:04 +01:00
dm-mpath.h
dm-path-selector.c md: Add module.h to all files using it implicitly 2011-10-31 19:31:18 -04:00
dm-path-selector.h
dm-queue-length.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
dm-raid.c Prevent DM RAID from loading bitmap twice. 2012-01-31 09:43:41 +11:00
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 md: Add module.h to all files using it implicitly 2011-10-31 19:31:18 -04:00
dm-service-time.c md: Add module.h to all files using it implicitly 2011-10-31 19:31:18 -04:00
dm-snap-persistent.c md: Add in export.h for files using EXPORT_SYMBOL 2011-10-31 19:31:19 -04:00
dm-snap-transient.c md: Add in export.h for files using EXPORT_SYMBOL 2011-10-31 19:31:19 -04:00
dm-snap.c dm snapshot: skip reading origin when overwriting complete chunk 2011-08-02 12:32:04 +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: add immutable feature 2011-10-31 20:19:04 +00:00
dm-target.c dm: error return error for discards 2010-08-12 04:14:14 +01:00
dm-thin-metadata.c dm: add thin provisioning target 2011-10-31 20:21:18 +00:00
dm-thin-metadata.h dm: add thin provisioning target 2011-10-31 20:21:18 +00:00
dm-thin.c dm: add thin provisioning target 2011-10-31 20:21:18 +00:00
dm-uevent.c md: Add in export.h for files using EXPORT_SYMBOL 2011-10-31 19:31:19 -04:00
dm-uevent.h
dm-zero.c dm: zero silently drop discards 2010-08-12 04:14:12 +01:00
dm.c Merge branch 'for-3.2/core' of git://git.kernel.dk/linux-block 2011-11-04 17:06:58 -07:00
dm.h dm table: add immutable feature 2011-10-31 20:19:04 +00:00
faulty.c Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux 2011-11-06 19:44:47 -08:00
Kconfig dm: add thin provisioning target 2011-10-31 20:21:18 +00:00
linear.c md/linear: fix hot-add of devices to linear arrays. 2011-12-23 09:56:55 +11:00
linear.h md/linear: typedef removal: linear_conf_t -> struct linear_conf 2011-10-11 16:48:54 +11:00
Makefile dm: add thin provisioning target 2011-10-31 20:21:18 +00:00
md.c md: two small fixes to handling interrupt resync. 2012-02-07 12:01:51 +11:00
md.h md: create externally visible flags for supporting hot-replace. 2011-12-23 10:17:51 +11:00
multipath.c md: change hot_remove_disk to take an rdev rather than a number. 2011-12-23 10:17:51 +11:00
multipath.h md/multipath: typedef removal: multipath_conf_t -> struct mpconf 2011-10-11 16:48:57 +11:00
raid0.c Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux 2011-11-06 19:44:47 -08:00
raid0.h md/raid0: typedef removal: raid0_conf_t -> struct r0conf 2011-10-11 16:48:59 +11:00
raid1.c md/raid1: fix buglet in md_raid1_contested. 2012-02-13 14:24:05 +11:00
raid1.h md/raid1: Allocate spare to store replacement devices and their bios. 2011-12-23 10:17:56 +11:00
raid5.c md/raid5: Mark device want_replacement when we see a write error. 2011-12-23 10:17:54 +11:00
raid5.h md/raid5: detect and handle replacements during recovery. 2011-12-23 10:17:53 +11:00
raid10.c md/raid10: fix handling of error on last working device in array. 2012-02-14 11:10:10 +11:00
raid10.h md/raid10: prepare data structures for handling replacement. 2011-12-23 10:17:54 +11:00