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f2fs: add new idle interval timing for discard and gc paths

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This helps to control the frequency of submission of discard and
GC requests independently, based on the need.

Suggested-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Sahitya Tummala
2018-09-19 14:18:47 +05:30
committed by Jaegeuk Kim
parent 6f5c2ed0a2
commit a7d10cf3e4
6 changed files with 56 additions and 14 deletions
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14
fs/f2fs/segment.c
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@@ -508,7 +508,7 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi)
else
f2fs_build_free_nids(sbi, false, false);
if (!is_idle(sbi) &&
if (!is_idle(sbi, REQ_TIME) &&
(!excess_dirty_nats(sbi) && !excess_dirty_nodes(sbi)))
return;
@@ -1308,7 +1308,7 @@ static unsigned int __issue_discard_cmd_orderly(struct f2fs_sb_info *sbi,
if (dc->state != D_PREP)
goto next;
if (dpolicy->io_aware && !is_idle(sbi)) {
if (dpolicy->io_aware && !is_idle(sbi, DISCARD_TIME)) {
io_interrupted = true;
break;
}
@@ -1368,7 +1368,7 @@ static int __issue_discard_cmd(struct f2fs_sb_info *sbi,
f2fs_bug_on(sbi, dc->state != D_PREP);
if (dpolicy->io_aware && i < dpolicy->io_aware_gran &&
!is_idle(sbi)) {
!is_idle(sbi, DISCARD_TIME)) {
io_interrupted = true;
break;
}
@@ -1561,8 +1561,6 @@ static int issue_discard_thread(void *data)
struct discard_policy dpolicy;
unsigned int wait_ms = DEF_MIN_DISCARD_ISSUE_TIME;
int issued;
unsigned long interval = sbi->interval_time[REQ_TIME] * HZ;
long delta;
set_freezable();
@@ -1599,10 +1597,8 @@ static int issue_discard_thread(void *data)
__wait_all_discard_cmd(sbi, &dpolicy);
wait_ms = dpolicy.min_interval;
} else if (issued == -1){
delta = (sbi->last_time[REQ_TIME] + interval) - jiffies;
if (delta > 0)
wait_ms = jiffies_to_msecs(delta);
else
wait_ms = f2fs_time_to_wait(sbi, DISCARD_TIME);
if (!wait_ms)
wait_ms = dpolicy.mid_interval;
} else {
wait_ms = dpolicy.max_interval;