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ext4: simplify calculation of blkoff in ext4_mb_new_blocks_simple

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[ Upstream commit 253cacb0de89235673ad5889d61f275a73dbee79 ]

We try to allocate a block from goal in ext4_mb_new_blocks_simple. We
only need get blkoff in first group with goal and set blkoff to 0 for
the rest groups.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Link: https://lore.kernel.org/r/20230303172120.3800725-21-shikemeng@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Stable-dep-of: 3f4830abd236 ("ext4: fix potential unnitialized variable")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kemeng Shi 2023-03-04 01:21:20 +08:00 committed by Greg Kroah-Hartman
parent 2a2bba3cbd
commit f49c865d5b
1 changed files with 2 additions and 3 deletions
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5
fs/ext4/mballoc.c
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@ -5371,9 +5371,6 @@ static ext4_fsblk_t ext4_mb_new_blocks_simple(handle_t *handle,
return 0;
}
ext4_get_group_no_and_offset(sb,
max(ext4_group_first_block_no(sb, group), goal),
NULL, &blkoff);
while (1) {
i = mb_find_next_zero_bit(bitmap_bh->b_data, max,
blkoff);
@ -5388,6 +5385,8 @@ static ext4_fsblk_t ext4_mb_new_blocks_simple(handle_t *handle,
brelse(bitmap_bh);
if (i < max)
break;
blkoff = 0;
}
if (group >= ext4_get_groups_count(sb) || i >= max) {