WSL2-Linux-Kernel

The source for the Linux kernel used in Windows Subsystem for Linux 2 (WSL2)

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Huang Ying 9c1cc2e4f2 mm, swap: fix comment in __read_swap_cache_async Commit `cbab0e4eec` ("swap: avoid read_swap_cache_async() race to deadlock while waiting on discard I/O completion") fixed a deadlock in read_swap_cache_async(). Because at that time, in swap allocation path, a swap entry may be set as SWAP_HAS_CACHE, then wait for discarding to complete before the page for the swap entry is added to the swap cache. But in commit `815c2c543d` ("swap: make swap discard async"), the discarding for swap become asynchronous, waiting for discarding to complete will be done before the swap entry is set as SWAP_HAS_CACHE. So the comments in code is incorrect now. This patch fixes the comments. The cond_resched() added in the commit `cbab0e4eec` is not necessary now too. But if we added some sleep in swap allocation path in the future, there may be some hard to debug/reproduce deadlock bug. So it is kept. Link: http://lkml.kernel.org/r/20170317064635.12792-1-ying.huang@intel.com Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Acked-by: Rafael Aquini <aquini@redhat.com> Cc: Shaohua Li <shli@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2017-05-03 15:52:10 -07:00
Documentation	mm: memcontrol: provide shmem statistics	2017-05-03 15:52:08 -07:00
arch	blackfin: bf609: let clk_disable() return immediately if clk is NULL	2017-05-03 15:52:07 -07:00
block	A reasonably busy cycle for documentation this time around. There is a new	2017-05-02 10:21:17 -07:00
certs	KEYS: Use structure to capture key restriction function and data	2017-04-04 14:10:10 -07:00
crypto	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2017-05-03 08:50:52 -07:00
drivers	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2017-05-03 08:50:52 -07:00
firmware	WHENCE: use https://linuxtv.org for LinuxTV URLs	2015-12-04 10:35:11 -02:00
fs	jbd2: make the whole kjournald2 kthread NOFS safe	2017-05-03 15:52:09 -07:00
include	mm: remove SWAP_[SUCCESS\|AGAIN\|FAIL]	2017-05-03 15:52:10 -07:00
init	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
ipc	kernel-api.rst: fix a series of errors when parsing C files	2017-04-02 14:31:49 -06:00
kernel	mm: introduce memalloc_nofs_{save,restore} API	2017-05-03 15:52:09 -07:00
lib	lockdep: allow to disable reclaim lockup detection	2017-05-03 15:52:09 -07:00
mm	mm, swap: fix comment in __read_swap_cache_async	2017-05-03 15:52:10 -07:00
net	Merge branch 'stable-4.12' of git://git.infradead.org/users/pcmoore/audit	2017-05-03 09:21:59 -07:00
samples	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching	2017-05-02 18:24:16 -07:00
scripts	scripts/spelling.txt: add several more common spelling mistakes	2017-05-03 15:52:07 -07:00
security	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2017-05-03 08:50:52 -07:00
sound	LED updates for 4.12	2017-05-01 13:12:49 -07:00
tools	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
usr	kbuild: initramfs cleanup, set target from Kconfig	2017-01-05 09:40:16 -08:00
virt	KVM/ARM Fixes for v4.11-rc6	2017-04-05 16:27:47 +02:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.get_maintainer.ignore	Add hch to .get_maintainer.ignore	2015-08-21 14:30:10 -07:00
.gitattributes	.gitattributes: set git diff driver for C source code files	2016-10-07 18:46:30 -07:00
.gitignore	Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2016-08-02 16:48:52 -04:00
.mailmap	mailmap: add Martin Kepplinger's email	2017-04-13 18:24:21 -07:00
COPYING	[PATCH] update FSF address in COPYING	2005-09-10 10:06:29 -07:00
CREDITS	avr32: remove support for AVR32 architecture	2017-05-01 09:27:15 +02:00
Kbuild	scripts/gdb: provide linux constants	2016-05-23 17:04:14 -07:00
Kconfig	kbuild: migrate all arch to the kconfig mainmenu upgrade	2010-09-19 22:54:11 -04:00
MAINTAINERS	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2017-05-02 19:09:35 -07:00
Makefile	A reasonably busy cycle for documentation this time around. There is a new	2017-05-02 10:21:17 -07:00
README	README: add a new README file, pointing to the Documentation/	2016-10-24 08:12:35 -02:00

README

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

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

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.