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c74c0d760e
linux/drivers/md
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NeilBrown c74c0d760e md/raid5: remove incorrect "min_t()" when calculating writepos. 
This code is calculating:
  writepos, which is the furthest along address (device-space) that we
     *will* be writing to
  readpos, which is the earliest address that we *could* possible read
     from, and
  safepos, which is the earliest address in the 'old' section that we
     might read from after a crash when the reshape position is
     recovered from metadata.

  The first is a precise calculation, so clipping at zero doesn't
  make sense.  As the reshape position is now guaranteed to always be
  a multiple of reshape_sectors and as we already BUG_ON when
  reshape_progress is zero, there is no point in this min_t() call.

  The readpos and safepos are worst case - actual value depends on
  precise geometry.  That worst case could be negative, which is only
  a problem because we are storing the value in an unsigned.
  So leave the min_t() for those.

Signed-off-by: NeilBrown <neilb@suse.com>
2015-08-31 19:36:06 +02:00
..
bcache bcache: don't embed 'return' statements in closure macros 2015-07-11 09:57:32 -06:00
persistent-data dm btree: silence lockdep lock inversion in dm_btree_del() 2015-07-06 10:45:02 -04:00
bitmap.c Some md fixes for 4.2 2015-07-25 11:24:58 -07:00
bitmap.h md-cluster: re-add capabilities 2015-04-22 07:59:39 +10:00
dm-bio-prison.c dm bio prison: add dm_cell_promote_or_release() 2015-05-29 14:19:06 -04:00
dm-bio-prison.h dm bio prison: add dm_cell_promote_or_release() 2015-05-29 14:19:06 -04:00
dm-bio-record.h
dm-bufio.c dm bufio: fix time comparison to use time_after_eq() 2015-02-09 13:06:48 -05:00
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: add fail io mode and needs_check flag 2015-06-11 17:13:00 -04:00
dm-cache-metadata.h dm cache: add fail io mode and needs_check flag 2015-06-11 17:13:00 -04:00
dm-cache-policy-cleaner.c dm cache: pass a new 'critical' flag to the policies when requesting writeback work 2015-05-29 14:19:04 -04:00
dm-cache-policy-internal.h dm cache: age and write back cache entries even without active IO 2015-06-11 17:13:01 -04:00
dm-cache-policy-mq.c dm cache: switch the "default" cache replacement policy from mq to smq 2015-06-17 12:40:38 -04:00
dm-cache-policy-smq.c dm cache policy smq: fix alloc_bitset check that always evaluates as false 2015-07-27 07:58:15 -04:00
dm-cache-policy.c
dm-cache-policy.h dm cache: age and write back cache entries even without active IO 2015-06-11 17:13:01 -04:00
dm-cache-target.c dm cache: fix device destroy hang due to improper prealloc_used accounting 2015-07-29 14:32:09 -04:00
dm-crypt.c dm crypt: add comments to better describe crypto processing logic 2015-05-29 14:19:02 -04:00
dm-delay.c dm delay: use msecs_to_jiffies for time conversion 2015-04-15 12:10:21 -04:00
dm-era-target.c
dm-exception-store.c
dm-exception-store.h
dm-flakey.c
dm-io.c dm io: deal with wandering queue limits when handling REQ_DISCARD and REQ_WRITE_SAME 2015-02-27 14:53:32 -05:00
dm-ioctl.c dm: only initialize the request_queue once 2015-04-30 10:25:21 -04:00
dm-kcopyd.c
dm-linear.c
dm-log-userspace-base.c dm log userspace base: fix compile warning 2015-04-15 12:10:20 -04:00
dm-log-userspace-transfer.c dm log userspace transfer: match wait_for_completion_timeout return type 2015-04-15 12:10:20 -04:00
dm-log-userspace-transfer.h
dm-log-writes.c dm log writes: use ULL suffix for 64-bit constants 2015-05-29 14:19:01 -04:00
dm-log.c
dm-mpath.c dm mpath: fix leak of dm_mpath_io structure in blk-mq .queue_rq error path 2015-05-27 17:37:22 -04:00
dm-mpath.h
dm-path-selector.c
dm-path-selector.h
dm-queue-length.c
dm-raid1.c dm raid1: keep issuing IO after leg failure 2015-05-29 14:19:02 -04:00
dm-raid.c dm raid: add support for the MD RAID0 personality 2015-05-29 14:19:00 -04:00
dm-region-hash.c
dm-round-robin.c
dm-service-time.c
dm-snap-persistent.c dm snapshot: remove unnecessary NULL checks before vfree() calls 2015-02-09 13:06:49 -05:00
dm-snap-transient.c
dm-snap.c block: remove management of bi_remaining when restoring original bi_end_io 2015-05-22 08:58:55 -06:00
dm-stats.c dm stats: add support for request-based DM devices 2015-06-17 12:40:41 -04:00
dm-stats.h dm stats: support precise timestamps 2015-06-17 12:40:40 -04:00
dm-stripe.c dm stripe: drop useless exit point from dm_stripe_init() 2015-05-29 14:19:01 -04:00
dm-switch.c
dm-sysfs.c dm: add 'use_blk_mq' module param and expose in per-device ro sysfs attr 2015-04-15 12:10:17 -04:00
dm-table.c Revert "block, dm: don't copy bios for request clones" 2015-06-26 10:11:58 -04:00
dm-target.c dm: allocate requests in target when stacking on blk-mq devices 2015-02-09 13:06:47 -05:00
dm-thin-metadata.c dm thin metadata: fix a race when entering fail mode 2015-06-11 17:13:06 -04:00
dm-thin-metadata.h dm thin metadata: add dm_thin_remove_range() 2015-06-11 17:13:04 -04:00
dm-thin.c dm thin: return -ENOSPC when erroring retry list due to out of data space 2015-07-26 17:39:19 -04:00
dm-uevent.c
dm-uevent.h
dm-verity.c block: remove management of bi_remaining when restoring original bi_end_io 2015-05-22 08:58:55 -06:00
dm-zero.c
dm.c dm: fix use after free crash due to incorrect cleanup sequence 2015-07-13 09:14:11 -04:00
dm.h - Revert block and DM core changes the removed request-based DM's 2015-06-26 12:35:01 -07:00
faulty.c md: rename ->stop to ->free 2015-02-04 08:35:52 +11:00
Kconfig dm crypt: update wiki page URL 2015-07-27 07:58:16 -04:00
linear.c md: rename ->stop to ->free 2015-02-04 08:35:52 +11:00
linear.h
Makefile dm cache: add stochastic-multi-queue (smq) policy 2015-06-11 17:12:59 -04:00
md-cluster.c Fix read-balancing during node failure 2015-07-24 13:37:59 +10:00
md-cluster.h Fix read-balancing during node failure 2015-07-24 13:37:59 +10:00
md.c md: close some races between setting and checking sync_action. 2015-08-31 19:30:40 +02:00
md.h writeback: separate out include/linux/backing-dev-defs.h 2015-06-02 08:33:34 -06:00
multipath.c md: rename ->stop to ->free 2015-02-04 08:35:52 +11:00
multipath.h
raid0.c md/raid0: update queue parameter in a safer location. 2015-08-03 17:12:44 +10:00
raid0.h
raid1.c md: close some races between setting and checking sync_action. 2015-08-31 19:30:40 +02:00
raid1.h md: make ->congested robust against personality changes. 2015-02-04 08:35:52 +11:00
raid5.c md/raid5: remove incorrect "min_t()" when calculating writepos. 2015-08-31 19:36:06 +02:00
raid5.h md/raid5: avoid races when changing cache size. 2015-07-22 14:04:15 +10:00
raid10.c md/raid10: fix a few typos in comments 2015-08-31 19:32:09 +02:00
raid10.h md: make ->congested robust against personality changes. 2015-02-04 08:35:52 +11:00