Yunlei He 068c3cd858 f2fs: rebuild sit page from sit info in mem ... This patch rebuild sit page from sit info in mem instead of issue a read io. I test this method and the result is as below: Pre: mmc_perf_test-12061 [001] ...1 976.819992: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [001] ...1 976.856446: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [003] ...1 998.976946: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [003] ...1 999.023269: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [003] ...1 1022.060772: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [003] ...1 1022.111034: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [002] ...1 1070.127643: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [003] ...1 1070.187352: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [003] ...1 1095.942124: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [003] ...1 1095.995975: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [003] ...1 1122.535091: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [003] ...1 1122.586521: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [001] ...1 1147.897487: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [001] ...1 1147.959438: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [003] ...1 1177.926951: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [002] ...1 1177.976823: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-12061 [002] ...1 1204.176087: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-12061 [002] ...1 1204.239046: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit Some sit flush consume more than 50ms. Now: mmc_perf_test-2187 [007] ...1 196.840684: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [007] ...1 196.841258: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [007] ...1 219.430582: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [007] ...1 219.431144: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [002] ...1 243.638678: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [000] ...1 243.638980: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [002] ...1 265.392180: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [002] ...1 265.392245: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [000] ...1 290.309051: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [000] ...1 290.309116: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [003] ...1 317.144209: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [003] ...1 317.145913: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [005] ...1 343.224954: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [005] ...1 343.225574: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [000] ...1 370.239846: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [000] ...1 370.241138: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [001] ...1 397.029043: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [001] ...1 397.030750: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit mmc_perf_test-2187 [003] ...1 425.386377: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = start flush sit mmc_perf_test-2187 [003] ...1 425.387735: f2fs_write_checkpoint: dev = (259,44), checkpoint for Sync, state = end flush sit Most sit flush consume no more than 1ms. Signed-off-by: Yunlei He <heyunlei@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>		2018-01-25 10:44:34 -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: allow to recover node blocks given updated checkpoint	2018-01-22 14:56:59 -08:00
data.c	f2fs: drop page cache after fs shutdown	2018-01-22 14:56:56 -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: stop gc/discard thread after fs shutdown	2018-01-22 14:56:55 -08:00
file.c	f2fs: stop gc/discard thread after fs shutdown	2018-01-22 14:56:55 -08:00
gc.c	f2fs: avoid hungtask when GC encrypted block if io_bits is set	2018-01-22 14:56:49 -08:00
gc.h	f2fs: add an ioctl to disable GC for specific file	2018-01-22 14:56:35 -08:00
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: prevent newly created inode from being dirtied incorrectly	2018-01-18 22:09:12 -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: prevent newly created inode from being dirtied incorrectly	2018-01-18 22:09:12 -08:00
node.c	f2fs: use GFP_F2FS_ZERO for cleanup	2018-01-25 10:39:49 -08:00
node.h	f2fs: allow to recover node blocks given updated checkpoint	2018-01-22 14:56:59 -08:00
recovery.c	f2fs: recover some i_inline flags	2018-01-22 14:56:58 -08:00
segment.c	f2fs: rebuild sit page from sit info in mem	2018-01-25 10:44:34 -08:00
segment.h	f2fs: rebuild sit page from sit info in mem	2018-01-25 10:44:34 -08:00
shrinker.c	f2fs: obsolete ALLOC_NID_LIST list	2017-10-10 12:49:53 -07:00
super.c	f2fs: clean up error path of fill_super	2018-01-22 14:56:50 -08:00
sysfs.c	f2fs: add an ioctl to disable GC for specific file	2018-01-22 14:56:35 -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: correct removexattr behavior for null valued extended attribute	2018-01-22 14:56:57 -08:00
xattr.h	f2fs: guard macro variables with braces	2017-04-10 19:48:10 -07:00