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f2fs: Fix the accounting of dcc->undiscard_blks

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When a discard_cmd needs to be split due to dpolicy->max_requests, then
for the remaining length it will be either merged into another cmd or a
new discard_cmd will be created. In this case, there is double
accounting of dcc->undiscard_blks for the remaining len, due to which
it shows incorrect value in stats.

Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Sahitya Tummala 2020-04-16 11:47:41 +05:30 committed by Jaegeuk Kim
parent ce4c638cdd
commit df42339975
1 changed files with 3 additions and 1 deletions
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4
fs/f2fs/segment.c
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@ -1214,8 +1214,10 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
len = total_len;
}
if (!err && len)
if (!err && len) {
dcc->undiscard_blks -= len;
__update_discard_tree_range(sbi, bdev, lstart, start, len);
}
return err;
}