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| author | Chao Yu <yuchao0@huawei.com> | 2016-08-29 23:58:34 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-09-07 17:27:38 -0700 |
| commit | 275b66b09e85cf0520dc610dd89706952751a473 (patch) | |
| tree | 9fc6b695893ea53d227b874cff443c766e56800d /fs/f2fs/checkpoint.c | |
| parent | 167451efb53c7999fb72591c46f29de09cd8f8b0 (diff) | |
| download | talos-obmc-linux-275b66b09e85cf0520dc610dd89706952751a473.tar.gz talos-obmc-linux-275b66b09e85cf0520dc610dd89706952751a473.zip | |
f2fs: support async discard
Like most filesystems, f2fs will issue discard command synchronously, so
when user trigger fstrim through ioctl, multiple discard commands will be
issued serially with sync mode, which makes poor performance.
In this patch we try to support async discard, so that all discard
commands can be issued and be waited for endio in batch to improve
performance.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/checkpoint.c')
| -rw-r--r-- | fs/f2fs/checkpoint.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index cd0443d25063..64a685d5c11b 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -1197,6 +1197,7 @@ int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) f2fs_bug_on(sbi, prefree_segments(sbi)); flush_sit_entries(sbi, cpc); clear_prefree_segments(sbi, cpc); + f2fs_wait_all_discard_bio(sbi); unblock_operations(sbi); goto out; } @@ -1216,6 +1217,8 @@ int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) /* unlock all the fs_lock[] in do_checkpoint() */ err = do_checkpoint(sbi, cpc); + f2fs_wait_all_discard_bio(sbi); + unblock_operations(sbi); stat_inc_cp_count(sbi->stat_info); |
