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f2fs: fix normal discard process

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[ Upstream commit b5f1a218ae ]

In the DPOLICY_BG mode, there is a conflict between
the two conditions "i + 1 < dpolicy->granularity" and
"i < DEFAULT_DISCARD_GRANULARITY". If i = 15, the first
condition is false, it will enter the second condition
and dispatch all small granularity discards in function
 __issue_discard_cmd_orderly. The restrictive effect
of the first condition to small discards will be
invalidated. These two conditions should align.

Fixes: 20ee438232 ("f2fs: issue small discard by LBA order")
Signed-off-by: Dongdong Zhang <zhangdongdong1@oppo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dongdong Zhang 2022-10-25 17:40:36 +08:00 committed by Greg Kroah-Hartman
parent 865bb7b5a7
commit 847f725006
1 changed files with 1 additions and 1 deletions
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2
fs/f2fs/segment.c
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@ -1551,7 +1551,7 @@ retry:
if (i + 1 < dpolicy->granularity)
break;
if (i < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered)
if (i + 1 < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered)
return __issue_discard_cmd_orderly(sbi, dpolicy);
pend_list = &dcc->pend_list[i];