* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-#define GC_THREAD_NAME "f2fs_gc_task"
#define GC_THREAD_MIN_WB_PAGES 1 /*
* a threshold to determine
* whether IO subsystem is idle
* or not
*/
-#define GC_THREAD_MIN_SLEEP_TIME 10000 /* milliseconds */
-#define GC_THREAD_MAX_SLEEP_TIME 30000
-#define GC_THREAD_NOGC_SLEEP_TIME 10000
+#define GC_THREAD_MIN_SLEEP_TIME 30000 /* milliseconds */
+#define GC_THREAD_MAX_SLEEP_TIME 60000
+#define GC_THREAD_NOGC_SLEEP_TIME 300000 /* wait 5 min */
#define LIMIT_INVALID_BLOCK 40 /* percentage over total user space */
#define LIMIT_FREE_BLOCK 40 /* percentage over invalid + free space */
/* Search max. number of dirty segments to select a victim segment */
#define MAX_VICTIM_SEARCH 20
-enum {
- GC_NONE = 0,
- GC_ERROR,
- GC_OK,
- GC_NEXT,
- GC_BLOCKED,
- GC_DONE,
-};
-
struct f2fs_gc_kthread {
struct task_struct *f2fs_gc_task;
wait_queue_head_t gc_wait_queue_head;
static inline long increase_sleep_time(long wait)
{
+ if (wait == GC_THREAD_NOGC_SLEEP_TIME)
+ return wait;
+
wait += GC_THREAD_MIN_SLEEP_TIME;
if (wait > GC_THREAD_MAX_SLEEP_TIME)
wait = GC_THREAD_MAX_SLEEP_TIME;
static inline long decrease_sleep_time(long wait)
{
+ if (wait == GC_THREAD_NOGC_SLEEP_TIME)
+ wait = GC_THREAD_MAX_SLEEP_TIME;
+
wait -= GC_THREAD_MIN_SLEEP_TIME;
if (wait <= GC_THREAD_MIN_SLEEP_TIME)
wait = GC_THREAD_MIN_SLEEP_TIME;
struct request_list *rl = &q->root_rl;
return !(rl->count[BLK_RW_SYNC]) && !(rl->count[BLK_RW_ASYNC]);
}
-
-static inline bool should_do_checkpoint(struct f2fs_sb_info *sbi)
-{
- unsigned int pages_per_sec = sbi->segs_per_sec *
- (1 << sbi->log_blocks_per_seg);
- int node_secs = ((get_pages(sbi, F2FS_DIRTY_NODES) + pages_per_sec - 1)
- >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
- int dent_secs = ((get_pages(sbi, F2FS_DIRTY_DENTS) + pages_per_sec - 1)
- >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
- return free_sections(sbi) <= (node_secs + 2 * dent_secs + 2);
-}