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Tejun Heo 769b628de0 blk-iocost: fix divide-by-zero in transfer_surpluses() 
Conceptually, root_iocg->hweight_donating must be less than WEIGHT_ONE but
all hweight calculations round up and thus it may end up >= WEIGHT_ONE
triggering divide-by-zero and other issues. Bound the value to avoid
surprises.

Fixes: e08d02aa5f ("blk-iocost: implement Andy's method for donation weight updates")
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-11 16:41:47 -06:00
arch
Merge tag 'x86-urgent-2020-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-08-30 12:01:23 -07:00
block
blk-iocost: fix divide-by-zero in transfer_surpluses()
2020-09-11 16:41:47 -06:00
certs
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
crypto
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2020-08-30 15:53:44 -07:00
Documentation
Documentation/filesystems/locking.rst: remove an incorrect sentence
2020-09-02 07:59:59 -06:00
drivers
bcache: use part_[begin|end]_io_acct instead of disk_[begin|end]_io_acct
2020-09-11 16:41:30 -06:00
fs
block: remove check_disk_change
2020-09-10 09:32:31 -06:00
include
block: introduce part_[begin|end]_io_acct
2020-09-11 16:41:30 -06:00
init
Merge tag 'for-linus' of git://github.com/openrisc/linux
2020-08-14 14:04:53 -07:00
ipc
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
kernel
blktrace: make function blk_trace_bio_get_cgid() static
2020-09-07 20:11:15 -06:00
lib
lib: Revert use of fallthrough pseudo-keyword in lib/
2020-08-24 14:17:44 -07:00
LICENSES
LICENSES: Rename other to deprecated
2019-05-03 06:34:32 -06:00
mm
Merge tag 'powerpc-5.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2020-08-30 10:56:12 -07:00
net
Merge tag 'nfsd-5.9-1' of git://git.linux-nfs.org/projects/cel/cel-2.6
2020-08-25 18:01:36 -07:00
samples
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
scripts
kconfig: qconf: replace deprecated QString::sprintf() with QTextStream
2020-08-21 10:23:38 +09:00
security
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
sound
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
tools
blk-iocost: update iocost_monitor.py
2020-09-01 19:38:33 -06:00
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
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2020-08-22 10:03:05 -07:00
.clang-format
block: add bio_for_each_bvec_all()
2020-05-25 11:25:24 +02:00
.cocciconfig
scripts: add Linux .cocciconfig for coccinelle
2016-07-22 12:13:39 +02:00
.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: Add ZSTD-compressed files
2020-07-31 11:50:49 +02:00
.mailmap
Merge branch 'akpm' (patches from Andrew)
2020-08-21 14:44:48 -07:00
COPYING
COPYING: state that all contributions really are covered by this file
2020-02-10 13:32:20 -08:00
CREDITS
CREDITS: Replace HTTP links with HTTPS ones
2020-07-23 14:53:58 -06:00
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 tag 'x86-urgent-2020-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-08-30 12:01:23 -07:00
Makefile
Linux 5.9-rc3
2020-08-30 16:01:54 -07:00
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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