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Anton Ivanov 8892d8545f um: Avoid marking pages with "changed protection" 
Changing protection is a very high cost operation in UML
because in addition to an extra syscall it also interrupts
mmap merge sequences generated by the tlb.

While the condition is not particularly common it is worth
avoiding.

Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2018-12-27 22:48:34 +01:00
arch
um: Avoid marking pages with "changed protection"
2018-12-27 22:48:34 +01:00
block
block: Fix null_blk_zoned creation failure with small number of zones
2018-12-11 16:19:38 -07:00
certs
export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR()
2018-08-22 23:21:44 +09:00
crypto
crypto: user - Disable statistics interface
2018-12-07 13:56:08 +08:00
Documentation
Merge tag 'xarray-4.20-rc7' of git://git.infradead.org/users/willy/linux-dax
2018-12-13 16:35:58 -08:00
drivers
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2018-12-22 15:03:00 -08:00
firmware
kbuild: remove all dummy assignments to obj-
2017-11-18 11:46:06 +09:00
fs
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-12-23 10:40:41 -08:00
include
Merge tag 'compiler-attributes-for-linus-v4.20' of https://github.com/ojeda/linux
2018-12-22 14:29:21 -08:00
init
psi: fix reference to kernel commandline enable
2018-12-14 15:05:45 -08:00
ipc
ipc: IPCMNI limit check for semmni
2018-10-31 08:54:14 -07:00
kernel
fork,memcg: fix crash in free_thread_stack on memcg charge fail
2018-12-21 14:51:18 -08:00
lib
XArray: Fix xa_alloc when id exceeds max
2018-12-13 14:07:33 -05:00
LICENSES
Merge tag 'docs-4.20' of git://git.lwn.net/linux
2018-10-24 18:01:11 +01:00
mm
mm, page_alloc: fix has_unmovable_pages for HugePages
2018-12-21 14:51:18 -08:00
net
tls: Do not call sk_memcopy_from_iter with zero length
2018-12-21 10:26:54 -08:00
samples
Merge tag 'vfio-v4.20-rc1.v2' of git://github.com/awilliam/linux-vfio
2018-10-31 11:01:38 -07:00
scripts
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-12-21 09:22:24 -08:00
security
ima: cleanup the match_token policy code
2018-12-17 16:31:28 -08:00
sound
ALSA: hda/realtek: Enable audio jacks of ASUS UX433FN/UX333FA with ALC294
2018-12-10 11:25:22 +01:00
tools
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-12-19 23:34:33 -08:00
usr
initramfs: move gen_initramfs_list.sh from scripts/ to usr/
2018-08-22 23:21:44 +09:00
virt
KVM: fix unregistering coalesced mmio zone from wrong bus
2018-12-18 22:07:25 +01:00
.clang-format
page cache: Convert find_get_pages_contig to XArray
2018-10-21 10:46:34 -04:00
.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 tag 'kbuild-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2018-04-15 17:21:30 -07:00
.mailmap
mailmap: Update email for Punit Agrawal
2018-11-05 10:02:11 +00:00
COPYING
COPYING: use the new text with points to the license files
2018-03-23 12:41:45 -06:00
CREDITS
MAINTAINERS: update entry for MMP platform
2018-12-03 12:39:57 -08:00
Kbuild
Merge tag 'kbuild-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2017-11-17 17:45:29 -08:00
Kconfig
kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt
2018-08-02 08:06:55 +09:00
MAINTAINERS
um: Update maintainers file entry
2018-12-27 22:44:39 +01:00
Makefile
Linux 4.20
2018-12-23 15:55:59 -08:00
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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