From: NeilBrown <neilb@suse.com>
To: Shaohua Li <shli@kernel.org>
Cc: linux-raid@vger.kernel.org, hch@lst.de
Subject: [md PATCH 00/15 v2] remove all abuse of bi_phys_segments
Date: Wed, 15 Mar 2017 14:05:11 +1100 [thread overview]
Message-ID: <148954692173.18641.1294690639716682540.stgit@noble> (raw)
This is a revised version of my series to remove all abuse of
bi_phys_segments from md/raid.
Most of the effort is for raid5 - raid1 and raid10 are
comparatively straight forward.
I've also include some optimization of md_write_start() which is now
used more heavily. This now uses percpu-refcount, which needed a
small modification.
As noted in some of these changelogs, a couple of bugs are fixed
in raid1/raid10. We should probably create fixes suitable for
-stable.
In this series there is a 'block' patch and a 'percpu-refcount' patch,
which should probably go in through other trees. I might send those
off as appropriate soonish.
Thanks,
NeilBrown
---
NeilBrown (15):
md/raid5: use md_write_start to count stripes, not bios
md/raid5: simplfy delaying of writes while metadata is updated.
md/raid5: call bio_endio() directly rather than queueing for later.
block: trace completion of all bios.
md/raid5: use bio_inc_remaining() instead of repurposing bi_phys_segments as a counter
md/raid5: remove over-loading of ->bi_phys_segments.
Revert "md/raid5: limit request size according to implementation limits"
md/raid1,raid10: move rXbio accounting closer to allocation.
md/raid10: stop using bi_phys_segments
md/raid1: stop using bi_phys_segment
md/raid5: don't test ->writes_pending in raid5_remove_disk
md: factor out set_in_sync()
md: close a race with setting mddev->in_sync
percpu-refcount: support synchronous switch to atomic mode.
MD: use per-cpu counter for writes_pending
block/bio.c | 3 +
drivers/md/dm.c | 1
drivers/md/md.c | 136 ++++++++++++++++++++-----------
drivers/md/md.h | 4 +
drivers/md/raid1.c | 95 ++++++----------------
drivers/md/raid10.c | 82 ++++++-------------
drivers/md/raid5-cache.c | 14 +--
drivers/md/raid5-log.h | 2
drivers/md/raid5.c | 170 +++++++++++----------------------------
drivers/md/raid5.h | 49 -----------
include/linux/percpu-refcount.h | 1
lib/percpu-refcount.c | 18 ++++
12 files changed, 216 insertions(+), 359 deletions(-)
--
Signature
next reply other threads:[~2017-03-15 3:05 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-15 3:05 NeilBrown [this message]
2017-03-15 3:05 ` [md PATCH 01/15] md/raid5: use md_write_start to count stripes, not bios NeilBrown
2017-03-15 3:05 ` [md PATCH 02/15] md/raid5: simplfy delaying of writes while metadata is updated NeilBrown
2017-03-15 23:03 ` Shaohua Li
2017-03-16 2:45 ` NeilBrown
2017-03-22 1:40 ` Fix bug in " NeilBrown
2017-03-22 2:29 ` REALLY " NeilBrown
2017-03-22 2:35 ` NeilBrown
2017-03-23 2:22 ` Shaohua Li
2017-03-15 3:05 ` [md PATCH 03/15] md/raid5: call bio_endio() directly rather than queueing for later NeilBrown
2017-03-15 3:05 ` [md PATCH 04/15] block: trace completion of all bios NeilBrown
2017-03-15 3:05 ` [md PATCH 05/15] md/raid5: use bio_inc_remaining() instead of repurposing bi_phys_segments as a counter NeilBrown
2017-03-15 3:05 ` [md PATCH 06/15] md/raid5: remove over-loading of ->bi_phys_segments NeilBrown
2017-03-15 3:05 ` [md PATCH 07/15] Revert "md/raid5: limit request size according to implementation limits" NeilBrown
2017-03-15 3:05 ` [md PATCH 09/15] md/raid10: stop using bi_phys_segments NeilBrown
2017-03-15 3:05 ` [md PATCH 08/15] md/raid1, raid10: move rXbio accounting closer to allocation NeilBrown
2017-03-15 3:05 ` [md PATCH 15/15] MD: use per-cpu counter for writes_pending NeilBrown
2017-03-16 1:05 ` Shaohua Li
2017-03-16 2:57 ` NeilBrown
2017-03-22 1:55 ` Improvement for " NeilBrown
2017-03-22 2:34 ` IMPROVEMENT for " NeilBrown
2017-03-15 3:05 ` [md PATCH 14/15] percpu-refcount: support synchronous switch to atomic mode NeilBrown
2017-03-15 3:05 ` [md PATCH 12/15] md: factor out set_in_sync() NeilBrown
2017-03-15 3:05 ` [md PATCH 11/15] md/raid5: don't test ->writes_pending in raid5_remove_disk NeilBrown
2017-03-15 3:05 ` [md PATCH 13/15] md: close a race with setting mddev->in_sync NeilBrown
2017-03-15 3:05 ` [md PATCH 10/15] md/raid1: stop using bi_phys_segment NeilBrown
2017-03-16 0:13 ` Shaohua Li
2017-03-16 2:49 ` NeilBrown
2017-03-16 3:36 ` Shaohua Li
2017-03-22 1:41 ` Fix bugs in " NeilBrown
2017-03-16 1:12 ` [md PATCH 00/15 v2] remove all abuse of bi_phys_segments Shaohua Li
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