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| author | Chao Yu <yuchao0@huawei.com> | 2017-10-04 09:08:34 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-10-26 10:44:08 +0200 |
| commit | 78997b569f5625f2762b3c4e743c33becdd5d99d (patch) | |
| tree | 47662630449ff77dd02e0c4ef08ee5777079ba3e /fs/f2fs/segment.h | |
| parent | ecc9aa00dbb10416d3c1d8ef44ee38d20a36d172 (diff) | |
| download | linux-rpi-78997b569f5625f2762b3c4e743c33becdd5d99d.tar.gz linux-rpi-78997b569f5625f2762b3c4e743c33becdd5d99d.tar.bz2 linux-rpi-78997b569f5625f2762b3c4e743c33becdd5d99d.zip | |
f2fs: split discard policy
There are many different scenarios such as fstrim, umount, urgent or
background where we will issue discards, actually, they need use
different policy in aspect of io aware, discard granularity, delay
interval and so on. But now they just share one common discard policy,
so there will be race when changing policy in between these scenarios,
the interference of changing discard policy will be very serious.
This patch changes to split discard policy for different scenarios.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.h')
| -rw-r--r-- | fs/f2fs/segment.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index e0a6cc23ace3..5a1f7b9c8a72 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -796,8 +796,9 @@ static inline void wake_up_discard_thread(struct f2fs_sb_info *sbi, bool force) goto wake_up; mutex_lock(&dcc->cmd_lock); - for (i = MAX_PLIST_NUM - 1; - i >= 0 && plist_issue(dcc->pend_list_tag[i]); i--) { + for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { + if (i + 1 < dcc->discard_granularity) + break; if (!list_empty(&dcc->pend_list[i])) { wakeup = true; break; |