diff options
Diffstat (limited to 'fs/f2fs/gc.h')
| -rw-r--r-- | fs/f2fs/gc.h | 59 |
1 files changed, 26 insertions, 33 deletions
diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h index b026d9354cc..5d5eb6047bf 100644 --- a/fs/f2fs/gc.h +++ b/fs/f2fs/gc.h @@ -8,33 +8,31 @@ * 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 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 */ #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, -}; +#define DEF_MAX_VICTIM_SEARCH 4096 /* covers 8GB */ struct f2fs_gc_kthread { struct task_struct *f2fs_gc_task; wait_queue_head_t gc_wait_queue_head; + + /* for gc 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; }; struct inode_entry { @@ -66,19 +64,25 @@ static inline block_t limit_free_user_blocks(struct f2fs_sb_info *sbi) return (long)(reclaimable_user_blocks * LIMIT_FREE_BLOCK) / 100; } -static inline long increase_sleep_time(long wait) +static inline long increase_sleep_time(struct f2fs_gc_kthread *gc_th, long wait) { - wait += GC_THREAD_MIN_SLEEP_TIME; - if (wait > GC_THREAD_MAX_SLEEP_TIME) - wait = GC_THREAD_MAX_SLEEP_TIME; + if (wait == gc_th->no_gc_sleep_time) + return wait; + + wait += gc_th->min_sleep_time; + if (wait > gc_th->max_sleep_time) + wait = gc_th->max_sleep_time; return wait; } -static inline long decrease_sleep_time(long wait) +static inline long decrease_sleep_time(struct f2fs_gc_kthread *gc_th, long wait) { - wait -= GC_THREAD_MIN_SLEEP_TIME; - if (wait <= GC_THREAD_MIN_SLEEP_TIME) - wait = GC_THREAD_MIN_SLEEP_TIME; + if (wait == gc_th->no_gc_sleep_time) + wait = gc_th->max_sleep_time; + + wait -= gc_th->min_sleep_time; + if (wait <= gc_th->min_sleep_time) + wait = gc_th->min_sleep_time; return wait; } @@ -104,14 +108,3 @@ static inline int is_idle(struct f2fs_sb_info *sbi) 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); -} |