linux/fs/f2fs
Chao Yu 49c60c67d2 f2fs: avoid high cpu usage in discard thread
We take very long time to finish generic/476, this is because we will
check consistence of all discard entries in global rb tree while
traversing all different granularity pending lists, even when the list
is empty, in order to avoid that unneeded overhead, we have to skip
the check when coming up an empty list.

generic/476 time consumption:
					cost
Before patch & w/o consistence check	57s
Before patch & w/ consistence check	1426s
After patch				78s

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-01-16 15:40:00 -08:00
..
acl.c posix_acl: convert posix_acl.a_refcount from atomic_t to refcount_t 2018-01-02 19:27:28 -08:00
acl.h f2fs: remove dead code f2fs_check_acl 2016-09-14 16:52:36 -07:00
checkpoint.c f2fs: inject fault to kzalloc 2018-01-02 19:27:29 -08:00
data.c f2fs: continue to do direct IO if we only preallocate partial blocks 2018-01-03 22:48:33 -08:00
debug.c f2fs: inject fault to kzalloc 2018-01-02 19:27:29 -08:00
dir.c f2fs: recover directory operations by fsync 2018-01-02 19:27:31 -08:00
extent_cache.c f2fs: fix a bug caused by NULL extent tree 2017-05-23 21:07:18 -07:00
f2fs.h f2fs: add reserved blocks for root user 2018-01-16 15:39:58 -08:00
file.c f2fs: recover directory operations by fsync 2018-01-02 19:27:31 -08:00
gc.c Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00
gc.h f2fs: fix potential overflow when adjusting GC cycle 2017-08-15 10:40:14 -07:00
hash.c f2fs: check entire encrypted bigname when finding a dentry 2017-05-04 11:44:35 -04:00
inline.c f2fs: enhance multiple device flush 2017-10-10 12:49:53 -07:00
inode.c f2fs: fix an error case of missing update inode page 2018-01-02 19:27:31 -08:00
Kconfig f2fs: add mount option to select fault injection ratio 2016-05-07 10:32:22 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
namei.c f2fs: recover directory operations by fsync 2018-01-02 19:27:31 -08:00
node.c f2fs: update inode info to inode page for new file 2018-01-16 15:39:56 -08:00
node.h f2fs: limit # of inmemory pages 2017-10-26 10:44:21 +02:00
recovery.c f2fs: remove unused parameter 2018-01-02 19:27:27 -08:00
segment.c f2fs: avoid high cpu usage in discard thread 2018-01-16 15:40:00 -08:00
segment.h f2fs: return error during fill_super 2018-01-02 19:27:31 -08:00
shrinker.c f2fs: obsolete ALLOC_NID_LIST list 2017-10-10 12:49:53 -07:00
super.c f2fs: make local functions static 2018-01-16 15:39:59 -08:00
sysfs.c f2fs: add reserved blocks for root user 2018-01-16 15:39:58 -08:00
trace.c f2fs: fix potential hangtask in f2fs_trace_pid 2018-01-02 19:27:30 -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: fix missing error number for xattr operation 2018-01-02 19:27:31 -08:00
xattr.h f2fs: guard macro variables with braces 2017-04-10 19:48:10 -07:00