From: Dongdong Zhang zhangdongdong1@oppo.com
[ Upstream commit b5f1a218ae5e4339130d6e733f0e63d623e09a2c ]
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: 20ee4382322c ("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 --- fs/f2fs/segment.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 28939e3573ea..194c0811fbdf 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1551,7 +1551,7 @@ static int __issue_discard_cmd(struct f2fs_sb_info *sbi, 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];