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Mikulas Patocka 70faef983a dm writecache: fix performance degradation in ssd mode 
commit cb728484a7710c202f02b96aa0962ce9b07aa5c2 upstream.

Fix a thinko in ssd_commit_superblock. region.count is in sectors, not
bytes. This bug doesn't corrupt data, but it causes performance
degradation.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: dc8a01ae1dbd ("dm writecache: optimize superblock write")
Cc: stable@vger.kernel.org # v5.7+
Reported-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-04 11:38:44 +01:00
arch
sparc32: fix a user-triggerable oops in clear_user()
2021-03-04 11:38:43 +01:00
block
blk-settings: align max_sectors on "logical_block_size" boundary
2021-03-04 11:38:22 +01:00
certs
certs: Fix blacklist flag type confusion
2021-03-04 11:37:59 +01:00
crypto
crypto: michael_mic - fix broken misalignment handling
2021-03-04 11:38:31 +01:00
Documentation
mm/vmscan: restore zone_reclaim_mode ABI
2021-03-04 11:38:38 +01:00
drivers
dm writecache: fix performance degradation in ssd mode
2021-03-04 11:38:44 +01:00
fs
gfs2: Recursive gfs2_quota_hold in gfs2_iomap_end
2021-03-04 11:38:44 +01:00
include
dm: fix deadlock when swapping to encrypted device
2021-03-04 11:38:44 +01:00
init
kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE
2021-03-04 11:38:41 +01:00
ipc
ipc: adjust proc_ipc_sem_dointvec definition to match prototype
2020-09-05 12:14:29 -07:00
kernel
kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE
2021-03-04 11:38:41 +01:00
lib
udp: fix skb_copy_and_csum_datagram with odd segment sizes
2021-02-17 11:02:28 +01:00
LICENSES
LICENSES/deprecated: add Zlib license text
2020-09-16 14:33:49 +02:00
mm
mm, compaction: make fast_isolate_freepages() stay within zone
2021-03-04 11:38:38 +01:00
net
svcrdma: Hold private mutex while invoking rdma_accept()
2021-03-04 11:38:08 +01:00
samples
watch_queue: Drop references to /dev/watch_queue
2021-03-04 11:37:59 +01:00
scripts
scripts/recordmcount.pl: support big endian for ARCH sh
2021-02-26 10:13:02 +01:00
security
KEYS: trusted: Reserve TPM for seal and unseal operations
2021-03-04 11:38:29 +01:00
sound
ASoC: siu: Fix build error by a wrong const prefix
2021-03-04 11:38:28 +01:00
tools
kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE
2021-03-04 11:38:41 +01:00
usr
Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-08-07 13:29:39 -07:00
virt
KVM: Use kvm_pfn_t for local PFN variable in hva_to_pfn_remapped()
2021-02-26 10:13:01 +01:00
.clang-format
RDMA 5.10 pull request
2020-10-17 11:18:18 -07:00
.cocciconfig
…
.get_maintainer.ignore
Opt out of scripts/get_maintainer.pl
2019-05-16 10:53:40 -07:00
.gitattributes
.gitattributes: use 'dts' diff driver for dts files
2019-12-04 19:44:11 -08:00
.gitignore
.gitignore: docs: ignore sphinx_*/ directories
2020-09-10 10:44:31 -06:00
.mailmap
mailmap: add two more addresses of Uwe Kleine-König
2020-12-06 10:19:07 -08:00
COPYING
COPYING: state that all contributions really are covered by this file
2020-02-10 13:32:20 -08:00
CREDITS
MAINTAINERS: Move Jason Cooper to CREDITS
2020-11-30 10:20:34 +01:00
Kbuild
kbuild: rename hostprogs-y/always to hostprogs/always-y
2020-02-04 01:53:07 +09:00
Kconfig
kbuild: ensure full rebuild when the compiler is updated
2020-05-12 13:28:33 +09:00
MAINTAINERS
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-12-10 15:30:13 -08:00
Makefile
Linux 5.10.19
2021-02-26 10:14:35 +01:00
README
Drop all 00-INDEX files from Documentation/
2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
Description
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