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linux/drivers/md
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Mike Snitzer fa8db4948f dm: don't use bio_trim() afterall 
bio_trim() has an early return, which makes it _not_ idempotent, if the
offset is 0 and the bio's bi_size already matches the requested size.
Prior to DM, all users of bio_trim() were fine with this.  But DM has
exposed the fact that bio_trim()'s early return is incompatible with a
cloned bio whose integrity payload must be trimmed via
bio_integrity_trim().

Fix this by reverting DM back to doing the equivalent of bio_trim() but
in an idempotent manner (so bio_integrity_trim is always performed).

Follow-on work is needed to assess what benefit bio_trim()'s early
return is providing to its existing callers.

Reported-by: Milan Broz <gmazyland@gmail.com>
Fixes: 57c36519e4b94 ("dm: fix clone_bio() to trigger blk_recount_segments()")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2019-02-06 17:24:37 -05:00
..
bcache
bcache: print number of keys in trace_bcache_journal_write
2018-12-13 08:15:54 -07:00
persistent-data
dm: Avoid namespace collision with bitmap API
2018-08-01 15:49:38 -07:00
dm-bio-prison-v1.c
dm: adjust structure members to improve alignment
2018-06-08 11:53:14 -04:00
dm-bio-prison-v1.h
block: switch bios to blk_status_t
2017-06-09 09:27:32 -06:00
dm-bio-prison-v2.c
dm: adjust structure members to improve alignment
2018-06-08 11:53:14 -04:00
dm-bio-prison-v2.h
dm bio prison v2: new interface for the bio prison
2017-03-07 11:30:16 -05:00
dm-bio-record.h
block: replace bi_bdev with a gendisk pointer and partitions index
2017-08-23 12:49:55 -06:00
dm-bufio.c
Merge branch 'akpm' (patches from Andrew)
2018-12-28 16:55:46 -08:00
dm-builtin.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dm-cache-background-tracker.c
dm cache background tracker: fix sparse warning
2018-04-30 15:40:40 -04:00
dm-cache-background-tracker.h
dm cache: significant rework to leverage dm-bio-prison-v2
2017-03-07 13:28:31 -05:00
dm-cache-block-types.h
linux: drop __bitwise__ everywhere
2016-12-16 00:13:41 +02:00
dm-cache-metadata.c
dm cache metadata: verify cache has blocks in blocks_are_clean_separate_dirty()
2018-12-07 16:04:09 -05:00
dm-cache-metadata.h
dm cache: significant rework to leverage dm-bio-prison-v2
2017-03-07 13:28:31 -05:00
dm-cache-policy-internal.h
dm cache: significant rework to leverage dm-bio-prison-v2
2017-03-07 13:28:31 -05:00
dm-cache-policy-smq.c
dm: remove unnecessary unlikely() around WARN_ON_ONCE()
2018-10-16 14:34:59 -04:00
dm-cache-policy.c
…
dm-cache-policy.h
dm cache: significant rework to leverage dm-bio-prison-v2
2017-03-07 13:28:31 -05:00
dm-cache-target.c
dm cache: destroy migration_cache if cache target registration failed
2018-10-09 13:53:03 -04:00
dm-core.h
dm: don't reuse bio for flushes
2018-12-19 09:13:34 -07:00
dm-crypt.c
dm crypt: fix parsing of extended IV arguments
2019-01-10 15:17:33 -05:00
dm-delay.c
dm: Check for device sector overflow if CONFIG_LBDAF is not set
2018-12-18 09:02:26 -05:00
dm-era-target.c
dm: allow targets to return output from messages they are sent
2018-04-03 15:04:10 -04:00
dm-exception-store.c
…
dm-exception-store.h
…
dm-flakey.c
dm flakey: Properly corrupt multi-page bios.
2018-12-18 09:02:27 -05:00
dm-integrity.c
Merge branch 'akpm' (patches from Andrew)
2018-12-28 16:55:46 -08:00
dm-io.c
dm: Use kzalloc for all structs with embedded biosets/mempools
2018-06-05 08:47:43 -06:00
dm-ioctl.c
dm ioctl: harden copy_params()'s copy_from_user() from malicious users
2018-10-18 11:54:07 -04:00
dm-kcopyd.c
dm kcopyd: Fix bug causing workqueue stalls
2018-12-18 09:02:26 -05:00
dm-linear.c
dm: Check for device sector overflow if CONFIG_LBDAF is not set
2018-12-18 09:02:26 -05:00
dm-log-userspace-base.c
dm: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
dm-log-userspace-transfer.c
…
dm-log-userspace-transfer.h
…
dm-log-writes.c
dax: Introduce a ->copy_to_iter dax operation
2018-05-22 23:18:31 -07:00
dm-log.c
block,fs: use REQ_* flags directly
2016-11-01 09:43:26 -06:00
dm-mpath.c
dm mpath: only flush workqueue when needed
2018-12-18 09:02:25 -05:00
dm-mpath.h
…
dm-path-selector.c
…
dm-path-selector.h
…
dm-queue-length.c
dm mpath selector: more evenly distribute ties
2018-01-29 13:44:58 -05:00
dm-raid1.c
dm: Check for device sector overflow if CONFIG_LBDAF is not set
2018-12-18 09:02:26 -05:00
dm-raid.c
dm raid: fix false -EBUSY when handling check/repair message
2018-12-18 13:48:35 -05:00
dm-region-hash.c
- Error path bug fix for overflow tests (Dan)
2018-06-12 18:28:00 -07:00
dm-round-robin.c
dm round robin: revert "use percpu 'repeat_count' and 'current_path'"
2017-02-17 00:54:09 -05:00
dm-rq.c
dm: add memory barrier before waitqueue_active
2019-02-06 17:24:37 -05:00
dm-rq.h
dm: remove legacy request-based IO path
2018-10-11 11:36:09 -04:00
dm-service-time.c
dm mpath selector: more evenly distribute ties
2018-01-29 13:44:58 -05:00
dm-snap-persistent.c
dm bufio: move dm-bufio.h to include/linux/
2018-04-03 15:04:23 -04:00
dm-snap-transient.c
…
dm-snap.c
dm snapshot: Fix excessive memory usage and workqueue stalls
2018-12-18 09:02:26 -05:00
dm-stats.c
mm: convert totalram_pages and totalhigh_pages variables to atomic
2018-12-28 12:11:47 -08:00
dm-stats.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dm-stripe.c
dax: Introduce a ->copy_to_iter dax operation
2018-05-22 23:18:31 -07:00
dm-switch.c
treewide: Use array_size() in vmalloc()
2018-06-12 16:19:22 -07:00
dm-sysfs.c
dm: remove legacy request-based IO path
2018-10-11 11:36:09 -04:00
dm-table.c
dm: do not allow readahead to limit IO size
2018-12-18 14:23:41 -05:00
dm-target.c
dm: remove unused macro DM_MOD_NAME_SIZE
2018-04-03 15:04:15 -04:00
dm-thin-metadata.c
dm thin: fix passdown_double_checking_shared_status()
2019-01-15 16:10:41 -05:00
dm-thin-metadata.h
dm thin: fix passdown_double_checking_shared_status()
2019-01-15 16:10:41 -05:00
dm-thin.c
dm thin: fix passdown_double_checking_shared_status()
2019-01-15 16:10:41 -05:00
dm-uevent.c
…
dm-uevent.h
…
dm-unstripe.c
dm: Check for device sector overflow if CONFIG_LBDAF is not set
2018-12-18 09:02:26 -05:00
dm-verity-fec.c
dm: Remove VLA usage from hashes
2018-09-14 14:08:52 +08:00
dm-verity-fec.h
dm: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
dm-verity-target.c
dm verity: log the hash algorithm implementation
2018-12-18 09:02:27 -05:00
dm-verity.h
dm verity: add 'check_at_most_once' option to only validate hashes once
2018-04-03 15:04:29 -04:00
dm-writecache.c
dm writecache: fix typo in error msg for creating writecache_flush_thread
2018-12-18 09:02:26 -05:00
dm-zero.c
dm: don't return errnos from ->map
2017-06-09 09:27:32 -06:00
dm-zoned-metadata.c
dm zoned: fix various dmz_get_mblock() issues
2018-10-18 15:17:03 -04:00
dm-zoned-reclaim.c
dm kcopyd: return void from dm_kcopyd_copy()
2018-07-31 17:33:21 -04:00
dm-zoned-target.c
dm zoned: Fix target BIO completion handling
2018-12-07 16:04:31 -05:00
dm-zoned.h
dm zoned: drive-managed zoned block device target
2017-06-19 11:05:20 -04:00
dm.c
dm: don't use bio_trim() afterall
2019-02-06 17:24:37 -05:00
dm.h
dm: remove legacy request-based IO path
2018-10-11 11:36:09 -04:00
Kconfig
dm: remove legacy request-based IO path
2018-10-11 11:36:09 -04:00
Makefile
dm: add writecache target
2018-06-08 11:59:51 -04:00
md-bitmap.c
md/bitmap: use mddev_suspend/resume instead of ->quiesce()
2018-10-10 11:03:34 -07:00
md-bitmap.h
md: Avoid namespace collision with bitmap API
2018-08-01 15:49:39 -07:00
md-cluster.c
md-cluster: remove suspend_info
2018-10-18 09:41:25 -07:00
md-cluster.h
md-cluster: introduce resync_info_get interface for sanity check
2018-10-18 09:36:35 -07:00
md-faulty.c
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
md-linear.c
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
md-linear.h
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
2017-11-14 16:07:26 -08:00
md-multipath.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
md-multipath.h
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
md.c
md: Make bio_alloc_mddev use bio_alloc_bioset
2019-01-14 06:31:56 -07:00
md.h
md-cluster/raid10: support add disk under grow mode
2018-10-18 09:34:56 -07:00
raid0.c
blkcg: remove bio->bi_css and instead use bio->bi_blkg
2018-12-07 22:26:37 -07:00
raid0.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
raid1-10.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
raid1.c
MD: fix invalid stored role for a disk - try2
2018-10-14 17:05:07 -07:00
raid1.h
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
raid5-cache.c
md/raid5: fix 'out of memory' during raid cache recovery
2019-01-28 11:44:40 -08:00
raid5-log.h
md/raid5-cache: disable reshape completely
2018-08-31 17:38:09 -07:00
raid5-ppl.c
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
raid5.c
md/raid5: fix 'out of memory' during raid cache recovery
2019-01-28 11:44:40 -08:00
raid5.h
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
2018-06-09 12:01:36 -07:00
raid10.c
md: fix raid10 hang issue caused by barrier
2018-12-20 08:53:24 -08:00
raid10.h
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00