android_kernel_oneplus_msm8998/fs/f2fs
Jaegeuk Kim 1e1ba6365e f2fs: fix performance issue observed with multi-thread sequential read
This reverts the commit - "b93f771 - f2fs: remove writepages lock"
to fix the drop in sequential read throughput.

Test: ./tiotest -t 32 -d /data/tio_tmp -f 32 -b 524288 -k 1 -k 3 -L
device: UFS

Before -
read throughput: 185 MB/s
total read requests: 85177 (of these ~80000 are 4KB size requests).
total write requests: 2546 (of these ~2208 requests are written in 512KB).

After -
read throughput: 758 MB/s
total read requests: 2417 (of these ~2042 are 512KB reads).
total write requests: 2701 (of these ~2034 requests are written in 512KB).

Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-09-18 14:42:39 -07:00
..
acl.c f2fs: stop all the operations by cp_error flag 2017-11-15 21:58:10 -08:00
acl.h f2fs: backport from (4c1fad64 - Merge tag 'for-f2fs-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs) 2016-10-17 16:38:44 -07:00
checkpoint.c f2fs: rework fault injection handling to avoid a warning 2018-09-18 14:42:39 -07:00
data.c f2fs: fix performance issue observed with multi-thread sequential read 2018-09-18 14:42:39 -07:00
debug.c f2fs: Allocate and stat mem used by free nid bitmap more accurately 2018-09-18 13:36:34 -07:00
dir.c f2fs: rework fault injection handling to avoid a warning 2018-09-18 14:42:39 -07:00
extent_cache.c f2fs: clean up symbol namespace 2018-07-08 17:47:36 -07:00
f2fs.h f2fs: fix performance issue observed with multi-thread sequential read 2018-09-18 14:42:39 -07:00
file.c f2fs: rework fault injection handling to avoid a warning 2018-09-18 14:42:39 -07:00
gc.c f2fs: rework fault injection handling to avoid a warning 2018-09-18 14:42:39 -07:00
gc.h f2fs: introduce sbi->gc_mode to determine the policy 2018-07-08 17:46:43 -07:00
hash.c f2fs: check entire encrypted bigname when finding a dentry 2017-05-08 16:35:47 -07:00
inline.c f2fs: fix to propagate error from __get_meta_page() 2018-09-18 13:37:12 -07:00
inode.c f2fs: fix to skip verifying block address for non-regular inode 2018-09-18 14:42:39 -07:00
Kconfig f2fs: remove wrong backported codes 2017-01-11 09:55:38 -08:00
Makefile f2fs: move sysfs code from super.c to fs/f2fs/sysfs.c 2017-07-13 16:56:51 -07:00
namei.c f2fs: Replace strncpy with memcpy 2018-09-18 13:36:41 -07:00
node.c f2fs: rework fault injection handling to avoid a warning 2018-09-18 14:42:39 -07:00
node.h f2fs: let checkpoint flush dnode page of regular 2018-09-18 13:39:22 -07:00
recovery.c f2fs: rework fault injection handling to avoid a warning 2018-09-18 14:42:39 -07:00
segment.c f2fs: fix performance issue observed with multi-thread sequential read 2018-09-18 14:42:39 -07:00
segment.h f2fs: do not set free of current section 2018-09-18 13:37:06 -07:00
shrinker.c f2fs: clean up symbol namespace 2018-07-08 17:47:36 -07:00
super.c f2fs: fix performance issue observed with multi-thread sequential read 2018-09-18 14:42:39 -07:00
sysfs.c f2fs: fix performance issue observed with multi-thread sequential read 2018-09-18 14:42:39 -07:00
trace.c f2fs: fix potential hangtask in f2fs_trace_pid 2018-02-07 18:05:37 -08:00
trace.h f2fs: add sbi and page pointer in f2fs_io_info 2015-05-28 15:41:32 -07:00
xattr.c f2fs: restrict setting up inode.i_advise 2018-09-18 13:38:17 -07:00
xattr.h f2fs: guard macro variables with braces 2017-05-08 16:26:38 -07:00