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Nikolay Borisov da07d4ab33 btrfs: Streamline btrfs_delalloc_reserve_metadata initial operations
The behavior of btrfs_delalloc_reserve_metadata depends on whether
the inode we are allocating for is the freespace inode or not. As it
stands if we are the free node we set 'flush' and 'delalloc_lock'
variable to certain values. Subsequently we check the values of those
vars and act accordingly. Instead, simplify things by having 1 if
which checks whether we are the freespace inode or not and do any
specific operation in either branches of that if. This makes the code
a bit easier to understand, as an added bonus it also shrinks the
compiled size:

add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-17 (-17)
Function                                     old     new   delta
btrfs_delalloc_reserve_metadata             1876    1859     -17
Total: Before=85966, After=85949, chg -0.02%

No functional changes.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Edmund Nadolski <enadolski@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2018-03-26 15:09:37 +02:00
arch Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-03-25 07:36:02 -10:00
block for-linus-20180302 2018-03-02 09:35:36 -08:00
certs certs/blacklist_nohashes.c: fix const confusion in certs blacklist 2018-02-21 15:35:43 -08:00
crypto X.509: fix NULL dereference when restricting key with unsupported_sig 2018-02-22 14:38:34 +00:00
Documentation Staging/IIO fixes for 4.16-rc7 2018-03-23 11:11:32 -07:00
drivers dmaengine fixes for v4.16-rc7 2018-03-25 07:45:10 -10:00
firmware kbuild: remove all dummy assignments to obj- 2017-11-18 11:46:06 +09:00
fs btrfs: Streamline btrfs_delalloc_reserve_metadata initial operations 2018-03-26 15:09:37 +02:00
include Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-03-25 07:18:31 -10:00
init jump_label: Disable jump labels in __exit code 2018-03-20 08:57:17 +01:00
ipc Revert "mqueue: switch to on-demand creation of internal mount" 2018-03-24 19:34:23 -05:00
kernel Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-03-25 07:34:50 -10:00
lib Merge branch 'akpm' (patches from Andrew) 2018-03-22 18:48:43 -07:00
LICENSES LICENSES: Add MPL-1.1 license 2018-01-06 10:59:44 -07:00
mm mm, thp: do not cause memcg oom for thp 2018-03-22 17:07:02 -07:00
net Two more fixes (in three patches): 2018-03-22 13:19:10 -04:00
samples - do not build samples when cross compiling (Michal Hocko) 2018-02-27 10:39:29 -08:00
scripts kbuild: Handle builtin dtb file names containing hyphens 2018-03-09 01:14:38 +09:00
security integrity/security: fix digsig.c build error with header file 2018-02-22 20:09:08 -08:00
sound ALSA: aloop: Fix access to not-yet-ready substream via cable 2018-03-22 10:40:27 +01:00
tools Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-03-25 07:36:02 -10:00
usr initramfs: fix initramfs rebuilds w/ compression after disabling 2017-11-03 07:39:19 -07:00
virt kvm/arm fixes for 4.16, take 2 2018-03-15 21:45:37 +01:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore .gitignore: ignore ASN.1 auto generated files 2018-02-14 21:05:38 +01:00
.mailmap mailmap: update Mark Yao's email address 2018-01-04 16:45:09 -08:00
COPYING
CREDITS MAINTAINERS: update TPM driver infrastructure changes 2017-11-09 17:58:40 -08:00
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
MAINTAINERS MAINTAINERS: update Mark Fasheh's e-mail 2018-03-22 17:07:01 -07:00
Makefile Linux 4.16-rc7 2018-03-25 12:44:30 -10:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

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.