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FROMLIST: f2fs: run fstrim asynchronously if runtime discard is on

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Cherry-picked from:
        origin/upstream-f2fs-stable-linux-4.9.y

We don't need to wait for whole bunch of discard candidates in fstrim, since
runtime discard will issue them in idle time.

Change-Id: I2b4556522fcfa7ca2fc5461ecfbfad338a23a692
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2018-05-31 10:20:48 -07:00
committed by Jaegeuk Kim
parent 8b94b87fe7
commit 54f1dc05da
1 changed files with 11 additions and 2 deletions
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13
fs/f2fs/segment.c
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@@ -2439,9 +2439,18 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
__init_discard_policy(sbi, &dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen);
__issue_discard_cmd_range(sbi, &dpolicy, start_block, end_block);
trimmed = __wait_discard_cmd_range(sbi, &dpolicy,
/*
* We filed discard candidates, but actually we don't need to wait for
* all of them, since they'll be issued in idle time along with runtime
* discard option. User configuration looks like using runtime discard
* or periodic fstrim instead of it.
*/
if (!test_opt(sbi, DISCARD)) {
trimmed = __wait_discard_cmd_range(sbi, &dpolicy,
start_block, end_block);
range->len = F2FS_BLK_TO_BYTES(trimmed);
range->len = F2FS_BLK_TO_BYTES(trimmed);
}
out:
return err;
}