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| author |   Yunlei He <heyunlei@huawei.com> | 2018-04-08 15:11:11 +0800 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk@kernel.org> | 2018-05-31 11:31:51 -0700 |
| commit | f9d1dced7583607e066527ee23d804478870d197 (patch) | |
| tree | 36e93da58dcb37530ddf0c057adf975b81922991 /fs/f2fs/segment.c | |
| parent | f2fs: avoid stucking GC due to atomic write (diff) | |
| download | linux-dev-f9d1dced7583607e066527ee23d804478870d197.tar.xz linux-dev-f9d1dced7583607e066527ee23d804478870d197.zip | |
f2fs: let discard thread wait a little longer if dev is busy
This patch modify discard thread wait policy as below:
issued io_interrupted wait time(ms)
1. 8 0 50
2. (0,8) 1 50
3. 0 1 500 (dev is busy)
4. 0 0 60000 (no candidates)
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index cc2d8f86d1ae..d61f5ca661ce 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -937,6 +937,7 @@ static void __init_discard_policy(struct f2fs_sb_info *sbi, if (discard_type == DPOLICY_BG) { dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; + dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME; dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; dpolicy->io_aware = true; dpolicy->sync = false; @@ -946,6 +947,7 @@ static void __init_discard_policy(struct f2fs_sb_info *sbi, } } else if (discard_type == DPOLICY_FORCE) { dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; + dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME; dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; dpolicy->io_aware = false; } else if (discard_type == DPOLICY_FSTRIM) { @@ -1420,9 +1422,11 @@ static int issue_discard_thread(void *data) sb_start_intwrite(sbi->sb); issued = __issue_discard_cmd(sbi, &dpolicy); - if (issued) { + if (issued > 0) { __wait_all_discard_cmd(sbi, &dpolicy); wait_ms = dpolicy.min_interval; + } else if (issued == -1){ + wait_ms = dpolicy.mid_interval; } else { wait_ms = dpolicy.max_interval; } |