[PATCH 00/17] bcache patches for Linux v5.6

colyli
2020-01-23T17:02:00Z

From: Coly Li <colyli@suse.de>

Hi Jens,

Here are the bcache patches for Linux v5.6.
In this series, we have 5 contributors including me,
- Ben Dooks and Guoju Fang contributes minor changes,
- Liang Chen contributes a patch to fix a bcache super block page leak
issue.
- Christoph Hellwig contributes a set of changes to improve the on-disk
format for super block I/O, and his patches pluses Liang Chen's patch
will make bcache supports kernel page size larger than 4KB. Now bcache
can work on machines (e.g. ARM64) which have 8KB or larger kernel page
size.
- I fixes some minor issue from Christoph's patches. And there are
effort to make bcache shrink btree node cache more aggressive when
system memory usage is in pressure. There are two importent fixes for
performance regression (Cc to Linux-stable),
- Fix extra I/O when aggressively flushing dirty btree node pages in
bcache journal code.
- Back to cache all readahead I/Os for small random I/Os.

There are still some patches under testing. Once they passes my testing,
I will submit them in following v5.6-rc versions.

Please take these patches, and thank you in advance.

Coly Li
---

Ben Dooks (Codethink) (1):
lib: crc64: include <linux/crc64.h> for 'crc64_be'

Christoph Hellwig (6):
bcache: use a separate data structure for the on-disk super block
bcache: rework error unwinding in register_bcache
bcache: transfer the sb_page reference to register_{bdev,cache}
bcache: return a pointer to the on-disk sb from read_super
bcache: store a pointer to the on-disk sb in the cache and cached_dev
structures
bcache: use read_cache_page_gfp to read the superblock

Coly Li (8):
bcache: properly initialize 'path' and 'err' in register_bcache()
bcache: fix use-after-free in register_bcache()
bcache: add code comments for state->pool in __btree_sort()
bcache: avoid unnecessary btree nodes flushing in btree_flush_write()
bcache: back to cache all readahead I/Os
bcache: remove member accessed from struct btree
bcache: reap c->btree_cache_freeable from the tail in bch_mca_scan()
bcache: reap from tail of c->btree_cache in bch_mca_scan()

Guoju Fang (1):
bcache: print written and keys in trace_bcache_btree_write

Liang Chen (1):
bcache: cached_dev_free needs to put the sb page

drivers/md/bcache/bcache.h | 2 +
drivers/md/bcache/bset.c | 5 ++
drivers/md/bcache/btree.c | 24 ++++----
drivers/md/bcache/btree.h | 2 -
drivers/md/bcache/journal.c | 80 +++++++++++++++++++++++--
drivers/md/bcache/request.c | 9 ---
drivers/md/bcache/super.c | 136 ++++++++++++++++++++++--------------------
include/trace/events/bcache.h | 3 +-
include/uapi/linux/bcache.h | 52 ++++++++++++++++
lib/crc64.c | 1 +
10 files changed, 218 insertions(+), 96 deletions(-)

--
2.16.4