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Davidlohr Bueso f0f1a45f95 block/cfq: cache rightmost rb_node
For the same reasons we already cache the leftmost pointer, apply the same
optimization for rb_last() calls.  Users must explicitly do this as
rb_root_cached only deals with the smallest node.

[dave@stgolabs.net: brain fart #1]
  Link: http://lkml.kernel.org/r/20170731155955.GD21328@linux-80c1.suse
Link: http://lkml.kernel.org/r/20170719014603.19029-18-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Jens Axboe <axboe@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-08 18:26:49 -07:00
arch arch/microblaze: add choice for endianness and update Makefile 2017-09-08 18:26:48 -07:00
block block/cfq: cache rightmost rb_node 2017-09-08 18:26:49 -07:00
certs
crypto
Documentation rbtree: cache leftmost node internally 2017-09-08 18:26:48 -07:00
drivers lib/interval_tree: fast overlap detection 2017-09-08 18:26:49 -07:00
firmware
fs fs/epoll: use faster rb_first_cached() 2017-09-08 18:26:49 -07:00
include lib/interval-tree: correct comment wrt generic flavor 2017-09-08 18:26:49 -07:00
init
ipc
kernel locking/rtmutex: replace top-waiter and pi_waiters leftmost caching 2017-09-08 18:26:49 -07:00
lib lib/interval_tree: fast overlap detection 2017-09-08 18:26:49 -07:00
mm mem/memcg: cache rightmost node 2017-09-08 18:26:49 -07:00
net
samples
scripts Merge branch 'gperf-removal' 2017-09-07 21:39:15 -07:00
security audit/stable-4.14 PR 20170907 2017-09-07 20:48:25 -07:00
sound linux/kernel.h: move DIV_ROUND_DOWN_ULL() macro 2017-09-08 18:26:47 -07:00
tools tools/testing/selftests/kcmp/kcmp_test.c: add KCMP_EPOLL_TFD testing 2017-09-08 18:26:47 -07:00
usr
virt
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS hmm: heterogeneous memory management documentation 2017-09-08 18:26:45 -07:00
Makefile
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.