Jaegeuk Kim 6b4afdd794 f2fs: introduce f2fs_issue_flush to avoid redundant flush issue ... Some storage devices show relatively high latencies to complete cache_flush commands, even though their normal IO speed is prettry much high. In such the case, it needs to merge cache_flush commands as much as possible to avoid issuing them redundantly. So, this patch introduces a mount option, "-o flush_merge", to mitigate such the overhead. If this option is enabled by user, F2FS merges the cache_flush commands and then issues just one cache_flush on behalf of them. Once the single command is finished, F2FS sends a completion signal to all the pending threads. Note that, this option can be used under a workload consisting of very intensive concurrent fsync calls, while the storage handles cache_flush commands slowly. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>		2014-04-07 09:50:58 +09:00
..
acl.c	f2fs: avoid RECLAIM_FS-ON-W warning	2014-03-20 22:21:08 +09:00
acl.h	f2fs: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
checkpoint.c	f2fs: use list_for_each_entry{_safe} for simplyfying code	2014-04-02 09:56:27 +09:00
data.c	f2fs: fix error path when fail to read inline data	2014-04-02 09:56:27 +09:00
debug.c	f2fs: remove unnecessary threshold	2014-03-20 22:10:09 +09:00
dir.c	f2fs: introduce fi->i_sem to protect fi's info	2014-03-20 22:10:11 +09:00
f2fs.h	f2fs: introduce f2fs_issue_flush to avoid redundant flush issue	2014-04-07 09:50:58 +09:00
file.c	f2fs: introduce f2fs_issue_flush to avoid redundant flush issue	2014-04-07 09:50:58 +09:00
gc.c	f2fs: remove the unused ctor argument of f2fs_kmem_cache_create()	2014-03-10 18:45:14 +09:00
gc.h	f2fs: add a sysfs entry to control max_victim_search	2014-01-08 13:45:08 +09:00
hash.c	f2fs: unify string length declarations and usage	2012-12-28 11:27:53 +09:00
inline.c	f2fs: fix error path when fail to read inline data	2014-04-02 09:56:27 +09:00
inode.c	f2fs: introduce get_dirty_dents for readability	2014-03-18 12:34:30 +09:00
Kconfig	f2fs: introduce CONFIG_F2FS_CHECK_FS for BUG_ON control	2013-10-29 15:43:01 +09:00
Makefile	f2fs: key functions to handle inline data	2013-12-26 20:40:09 +09:00
namei.c	f2fs: introduce fi->i_sem to protect fi's info	2014-03-20 22:10:11 +09:00
node.c	f2fs: use list_for_each_entry{_safe} for simplyfying code	2014-04-02 09:56:27 +09:00
node.h	f2fs: skip unnecessary node writes during fsync	2014-03-20 22:10:11 +09:00
recovery.c	f2fs: use list_for_each_entry{_safe} for simplyfying code	2014-04-02 09:56:27 +09:00
segment.c	f2fs: introduce f2fs_issue_flush to avoid redundant flush issue	2014-04-07 09:50:58 +09:00
segment.h	f2fs: change reclaim rate in percentage	2014-03-20 22:10:10 +09:00
super.c	f2fs: introduce f2fs_issue_flush to avoid redundant flush issue	2014-04-07 09:50:58 +09:00
xattr.c	f2fs: avoid unneeded lookup when xattr name length is too long	2014-04-01 18:54:24 +09:00
xattr.h	f2fs: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00