Doug / smarc-fsl-linux-kernel

Download as
Browse Code ยป

Commit 6cb968d9b0358c7e807416a85699a526e820083c

Authored by Jaegeuk Kim
1 parent 2af4bd6ca5
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

f2fs: avoid frequent background GC 

If there is no victim segments selected by background GC, let's wait
a little bit longer time to collect dirty segments.
By default, let's give 5 minutes.

Reviewed-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

Showing 2 changed files with 9 additions and 6 deletions Side-by-side Diff

... ... @@ -82,9 +82,6 @@
82 82 /* if return value is not zero, no victim was selected */
83 83 if (f2fs_gc(sbi))
84 84 wait_ms = GC_THREAD_NOGC_SLEEP_TIME;
85   - else if (wait_ms == GC_THREAD_NOGC_SLEEP_TIME)
86   - wait_ms = GC_THREAD_MAX_SLEEP_TIME;
87   -
88 85 } while (!kthread_should_stop());
89 86 return 0;
90 87 }
... ... @@ -13,9 +13,9 @@
13 13 * whether IO subsystem is idle
14 14 * or not
15 15 */
16   -#define GC_THREAD_MIN_SLEEP_TIME 10000 /* milliseconds */
17   -#define GC_THREAD_MAX_SLEEP_TIME 30000
18   -#define GC_THREAD_NOGC_SLEEP_TIME 10000
  16 +#define GC_THREAD_MIN_SLEEP_TIME 30000 /* milliseconds */
  17 +#define GC_THREAD_MAX_SLEEP_TIME 60000
  18 +#define GC_THREAD_NOGC_SLEEP_TIME 300000 /* wait 5 min */
19 19 #define LIMIT_INVALID_BLOCK 40 /* percentage over total user space */
20 20 #define LIMIT_FREE_BLOCK 40 /* percentage over invalid + free space */
21 21  
... ... @@ -58,6 +58,9 @@
58 58  
59 59 static inline long increase_sleep_time(long wait)
60 60 {
  61 + if (wait == GC_THREAD_NOGC_SLEEP_TIME)
  62 + return wait;
  63 +
61 64 wait += GC_THREAD_MIN_SLEEP_TIME;
62 65 if (wait > GC_THREAD_MAX_SLEEP_TIME)
63 66 wait = GC_THREAD_MAX_SLEEP_TIME;
... ... @@ -66,6 +69,9 @@
66 69  
67 70 static inline long decrease_sleep_time(long wait)
68 71 {
  72 + if (wait == GC_THREAD_NOGC_SLEEP_TIME)
  73 + wait = GC_THREAD_MAX_SLEEP_TIME;
  74 +
69 75 wait -= GC_THREAD_MIN_SLEEP_TIME;
70 76 if (wait <= GC_THREAD_MIN_SLEEP_TIME)
71 77 wait = GC_THREAD_MIN_SLEEP_TIME;