NeilBrown ea664c8245 md/raid5: need_this_block: tidy/fix last condition. ... That last condition is unclear and over cautious. There are two related issues here. If a partial write is destined for a missing device, then either RMW or RCW can work. We must read all the available block. Only then can the missing blocks be calculated, and then the parity update performed. If RMW is not an option, then there is a complication even without partial writes. If we would need to read a missing device to perform the reconstruction, then we must first read every block so the missing device data can be computed. This is the case for RAID6 (Which currently does not support RMW) and for times when we don't trust the parity (after a crash) and so are in the process of resyncing it. So make these two cases more clear and separate, and perform the relevant tests more thoroughly. Signed-off-by: NeilBrown <neilb@suse.de>		2015-02-04 08:35:51 +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/bitmap: fix a might_sleep() warning.	2015-02-02 17:08:03 +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 snapshot: use dm-bufio prefetch	2014-01-14 23:23:03 -05:00
dm-builtin.c	dm sysfs: fix a module unload race	2014-01-14 23:23:04 -05:00
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: add policy name to status output	2014-01-16 13:44:11 -05:00
dm-cache-policy.h	dm cache: add policy name to status output	2014-01-16 13:44:11 -05:00
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	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	2014-01-30 11:19:05 -08:00
dm-era-target.c	dm era: check for a non-NULL metadata object before closing it	2014-06-03 13:44:08 -04:00
dm-exception-store.c
dm-exception-store.h
dm-flakey.c
dm-io.c	dm io: simplify dec_count and sync_io	2014-08-01 12:30:30 -04:00
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: allow mark requests to piggyback on flush requests	2014-01-21 23:46:27 -05:00
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 raid1: fix immutable biovec related BUG when retrying read bio	2014-02-18 10:48:57 -05:00
dm-raid.c	dm raid: fix inaccessible superblocks causing oops in configure_discard_support	2014-10-29 14:53:27 -04:00
dm-region-hash.c
dm-round-robin.c
dm-service-time.c
dm-snap-persistent.c	dm snapshot: fix metadata corruption	2014-03-03 17:58:13 -05:00
dm-snap-transient.c
dm-snap.c	sched: Remove proliferation of wait_on_bit() action functions	2014-07-16 15:10:39 +02:00
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 switch: efficiently support repetitive patterns	2014-08-01 12:30:37 -04:00
dm-sysfs.c	dm sysfs: fix a module unload race	2014-01-14 23:23:04 -05:00
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 verity: fix biovecs hash calculation regression	2014-04-15 12:19:24 -04:00
dm-zero.c	dm crypt, dm zero: update author name following legal name change	2014-07-10 16:44:14 -04:00
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
Kconfig	dm: add era target	2014-03-27 16:56:23 -04:00
linear.c	md: remove unwanted white space from md.c	2014-10-14 13:08:29 +11:00
linear.h
Makefile	dm: add era target	2014-03-27 16:56:23 -04:00
md.c	Three fixes for md	2014-12-14 12:13:05 -08:00
md.h	md: remove unwanted white space from md.c	2014-10-14 13:08:29 +11:00
multipath.c	md: remove unwanted white space from md.c	2014-10-14 13:08:29 +11:00
multipath.h
raid0.c	md: remove unwanted white space from md.c	2014-10-14 13:08:29 +11:00
raid0.h
raid1.c	md: remove unwanted white space from md.c	2014-10-14 13:08:29 +11:00
raid1.h	md: remove unwanted white space from md.c	2014-10-14 13:08:29 +11:00
raid5.c	md/raid5: need_this_block: tidy/fix last condition.	2015-02-04 08:35:51 +11:00
raid5.h	md: remove unwanted white space from md.c	2014-10-14 13:08:29 +11:00
raid10.c	md: remove unwanted white space from md.c	2014-10-14 13:08:29 +11:00
raid10.h