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authorJaegeuk Kim <jaegeuk@kernel.org>2017-08-06 22:09:00 -0700
committerJaegeuk Kim <jaegeuk@kernel.org>2017-08-15 10:40:12 -0700
commitd9872a698c393e0d1abca86bf05b62712cbfc581 (patch)
treee7c272fc1fed41d2a4590f381c0fa5bb983c02f9 /fs/f2fs/gc.h
parent3537581a722402a1e6f0942cd0653035a9e09e21 (diff)
downloadlinux-d9872a698c393e0d1abca86bf05b62712cbfc581.tar.bz2
f2fs: introduce gc_urgent mode for background GC
This patch adds a sysfs entry to control urgent mode for background GC. If this is set, background GC thread conducts GC with gc_urgent_sleep_time all the time. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/gc.h')
-rw-r--r--fs/f2fs/gc.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h
index a993967dcdb9..57a9000ce3af 100644
--- a/fs/f2fs/gc.h
+++ b/fs/f2fs/gc.h
@@ -13,6 +13,7 @@
* whether IO subsystem is idle
* or not
*/
+#define DEF_GC_THREAD_URGENT_SLEEP_TIME 500 /* 500 ms */
#define DEF_GC_THREAD_MIN_SLEEP_TIME 30000 /* milliseconds */
#define DEF_GC_THREAD_MAX_SLEEP_TIME 60000
#define DEF_GC_THREAD_NOGC_SLEEP_TIME 300000 /* wait 5 min */
@@ -27,12 +28,15 @@ struct f2fs_gc_kthread {
wait_queue_head_t gc_wait_queue_head;
/* for gc sleep time */
+ unsigned int urgent_sleep_time;
unsigned int min_sleep_time;
unsigned int max_sleep_time;
unsigned int no_gc_sleep_time;
/* for changing gc mode */
unsigned int gc_idle;
+ unsigned int gc_urgent;
+ unsigned int gc_wake;
};
struct gc_inode_list {