From: Kemeng Shi Date: Sat, 3 Jun 2023 15:03:11 +0000 (+0800) Subject: ext4: fix wrong unit use in ext4_mb_find_by_goal X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=99c515e3a860576ba90c11acbc1d6488dfca6463;p=linux.git ext4: fix wrong unit use in ext4_mb_find_by_goal We need start in block unit while fe_start is in cluster unit. Use ext4_grp_offs_to_block helper to convert fe_start to get start in block unit. Signed-off-by: Kemeng Shi Reviewed-by: Ojaswin Mujoo Link: https://lore.kernel.org/r/20230603150327.3596033-4-shikemeng@huaweicloud.com Signed-off-by: Theodore Ts'o --- diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index d8caef7cd9d0b..f6dc4f276ca47 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -2210,8 +2210,7 @@ int ext4_mb_find_by_goal(struct ext4_allocation_context *ac, if (max >= ac->ac_g_ex.fe_len && ac->ac_g_ex.fe_len == sbi->s_stripe) { ext4_fsblk_t start; - start = ext4_group_first_block_no(ac->ac_sb, e4b->bd_group) + - ex.fe_start; + start = ext4_grp_offs_to_block(ac->ac_sb, &ex); /* use do_div to get remainder (would be 64-bit modulo) */ if (do_div(start, sbi->s_stripe) == 0) { ac->ac_found++;