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Subject[PATCH 21/21] ext4: simplify calculation of blkoff in ext4_mb_new_blocks_simple
Date
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>
---
fs/ext4/mballoc.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 5bc30cd5debf..bd5e4db677c7 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -5772,9 +5772,6 @@ 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);
@@ -5789,6 +5786,8 @@ 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) {
--
2.30.0
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