NeilBrown 26ac107378 md/raid5: Fix livelock when array is both resyncing and degraded. ... Commit a7854487cd: md: When RAID5 is dirty, force reconstruct-write instead of read-modify-write. Causes an RCW cycle to be forced even when the array is degraded. A degraded array cannot support RCW as that requires reading all data blocks, and one may be missing. Forcing an RCW when it is not possible causes a live-lock and the code spins, repeatedly deciding to do something that cannot succeed. So change the condition to only force RCW on non-degraded arrays. Reported-by: Manibalan P <pmanibalan@amiindia.co.in> Bisected-by: Jes Sorensen <Jes.Sorensen@redhat.com> Tested-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: NeilBrown <neilb@suse.de> Fixes: a7854487cd Cc: stable@vger.kernel.org (v3.7+)		2015-02-18 11:35:14 +11:00
..
bcache	md/bcache: use generic io stats accounting functions to simplify io stat accounting	2014-11-24 08:05:12 -07:00
persistent-data	dm space map metadata: fix sm_bootstrap_get_count()	2014-12-02 10:25:06 -05:00
bitmap.c	md: remove mddev_lock() from md_attr_show()	2015-02-06 09:32:55 +11:00
bitmap.h
dm-bio-prison.c	dm bio prison: introduce support for locking ranges of blocks	2014-11-10 15:25:30 -05:00
dm-bio-prison.h	dm bio prison: introduce support for locking ranges of blocks	2014-11-10 15:25:30 -05:00
dm-bio-record.h
dm-bufio.c	- Significant DM thin-provisioning performance improvements to meet	2014-12-08 21:10:03 -08:00
dm-bufio.h
dm-builtin.c
dm-cache-block-types.h	dm cache: revert "remove remainder of distinct discard block size"	2014-11-10 15:25:30 -05:00
dm-cache-metadata.c	dm cache: share cache-metadata object across inactive and active DM tables	2015-01-23 10:57:15 -05:00
dm-cache-metadata.h	dm cache: revert "remove remainder of distinct discard block size"	2014-11-10 15:25:30 -05:00
dm-cache-policy-cleaner.c
dm-cache-policy-internal.h
dm-cache-policy-mq.c	dm cache policy mq: simplify ability to promote sequential IO to the cache	2014-11-10 15:25:30 -05:00
dm-cache-policy.c
dm-cache-policy.h
dm-cache-target.c	dm cache: fix problematic dual use of a single migration count variable	2015-01-23 11:06:08 -05:00
dm-crypt.c	- Significant DM thin-provisioning performance improvements to meet	2014-12-08 21:10:03 -08:00
dm-delay.c
dm-era-target.c
dm-exception-store.c
dm-exception-store.h
dm-flakey.c
dm-io.c
dm-ioctl.c	dm: enhance internal suspend and resume interface	2014-11-19 12:31:17 -05:00
dm-kcopyd.c
dm-linear.c
dm-log-userspace-base.c
dm-log-userspace-transfer.c	dm log userspace: fix memory leak in dm_ulog_tfr_init failure path	2014-10-05 20:03:38 -04:00
dm-log-userspace-transfer.h
dm-log.c
dm-mpath.c	dm mpath: stop queueing IO when no valid paths exist	2014-10-05 20:03:35 -04:00
dm-mpath.h
dm-path-selector.c
dm-path-selector.h
dm-queue-length.c
dm-raid1.c
dm-raid.c	md: make ->congested robust against personality changes.	2015-02-04 08:35:52 +11:00
dm-region-hash.c
dm-round-robin.c
dm-service-time.c
dm-snap-persistent.c
dm-snap-transient.c
dm-snap.c
dm-stats.c	- Significant DM thin-provisioning performance improvements to meet	2014-12-08 21:10:03 -08:00
dm-stats.h
dm-stripe.c	dm stripe: fix potential for leak in stripe_ctr error path	2014-10-10 22:05:18 -04:00
dm-switch.c
dm-sysfs.c
dm-table.c	dm: add presuspend_undo hook to target_type	2014-11-19 11:24:59 -05:00
dm-target.c
dm-thin-metadata.c	dm thin: prefetch missing metadata pages	2014-11-10 15:25:27 -05:00
dm-thin-metadata.h	dm thin: prefetch missing metadata pages	2014-11-10 15:25:27 -05:00
dm-thin.c	dm thin: fix crash by initializing thin device's refcount and completion earlier	2014-12-17 12:06:25 -05:00
dm-uevent.c
dm-uevent.h
dm-verity.c
dm-zero.c
dm.c	dm: fix handling of multiple internal suspends	2015-01-24 14:50:08 -05:00
dm.h	dm: enhance internal suspend and resume interface	2014-11-19 12:31:17 -05:00
faulty.c	md: rename ->stop to ->free	2015-02-04 08:35:52 +11:00
Kconfig
linear.c	md: rename ->stop to ->free	2015-02-04 08:35:52 +11:00
linear.h
Makefile
md.c	md: make reconfig_mutex optional for writes to md sysfs files.	2015-02-06 09:32:56 +11:00
md.h	md: wakeup thread upon rdev_dec_pending()	2015-02-06 09:32:57 +11:00
multipath.c	md: rename ->stop to ->free	2015-02-04 08:35:52 +11:00
multipath.h
raid0.c	md: rename ->stop to ->free	2015-02-04 08:35:52 +11:00
raid0.h
raid1.c	md/raid1: round up to bdev_logical_block_size in narrow_write_error	2015-02-16 14:49:26 +11:00
raid1.h	md: make ->congested robust against personality changes.	2015-02-04 08:35:52 +11:00
raid5.c	md/raid5: Fix livelock when array is both resyncing and degraded.	2015-02-18 11:35:14 +11:00
raid5.h	md: make ->congested robust against personality changes.	2015-02-04 08:35:52 +11:00
raid10.c	md/raid10: round up to bdev_logical_block_size in narrow_write_error.	2015-02-16 14:51:54 +11:00
raid10.h	md: make ->congested robust against personality changes.	2015-02-04 08:35:52 +11:00