[PATCH v3 09/10] ext4: return found group directly in ext4_mb_choose_next_group_best_avail

From: Kemeng Shi
Date: Tue Aug 01 2023 - 02:32:29 EST


Return good group when it's found in loop to remove futher check if good
group is found after loop.

Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx>
---
fs/ext4/mballoc.c | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index e9e37ffe5c10..bfaab173a3f4 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -1042,18 +1042,16 @@ static void ext4_mb_choose_next_group_best_avail(struct ext4_allocation_context
ac->ac_g_ex.fe_len);

grp = ext4_mb_find_good_group_avg_frag_lists(ac, frag_order);
- if (grp)
- break;
+ if (grp) {
+ *group = grp->bb_group;
+ ac->ac_flags |= EXT4_MB_CR_BEST_AVAIL_LEN_OPTIMIZED;
+ return;
+ }
}

- if (grp) {
- *group = grp->bb_group;
- ac->ac_flags |= EXT4_MB_CR_BEST_AVAIL_LEN_OPTIMIZED;
- } else {
- /* Reset goal length to original goal length before falling into CR_GOAL_LEN_SLOW */
- ac->ac_g_ex.fe_len = ac->ac_orig_goal_len;
- *new_cr = CR_GOAL_LEN_SLOW;
- }
+ /* Reset goal length to original goal length before falling into CR_GOAL_LEN_SLOW */
+ ac->ac_g_ex.fe_len = ac->ac_orig_goal_len;
+ *new_cr = CR_GOAL_LEN_SLOW;
}

static inline int should_optimize_scan(struct ext4_allocation_context *ac)
--
2.30.0