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From:   brookxu <brookxu.cn@gmail.com>
Subject: [PATCH] ext4: put grp related checks into ext4_mb_good_group()
To:     adilger.kernel@dilger.ca, tytso@mit.edu, linux-ext4@vger.kernel.org
Message-ID: <a53fe585-2b31-3a2e-f3eb-edc6f80ad85f@gmail.com>
Date:   Fri, 7 Aug 2020 22:01:46 +0800
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We will make these judgments in ext4_mb_good_group(), maybe there
is no need to repeat judgments here.

Signed-off-by: Chunguang Xu <brookxu@tencent.com>
---
 fs/ext4/mballoc.c | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 4304113..84871f7 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2178,21 +2178,8 @@ static int ext4_mb_good_group_nolock(struct ext4_allocation_context *ac,
 	struct ext4_group_info *grp = ext4_get_group_info(ac->ac_sb, group);
 	struct super_block *sb = ac->ac_sb;
 	bool should_lock = ac->ac_flags & EXT4_MB_STRICT_CHECK;
-	ext4_grpblk_t free;
 	int ret = 0;
 
-	if (should_lock)
-		ext4_lock_group(sb, group);
-	free = grp->bb_free;
-	if (free == 0)
-		goto out;
-	if (cr <= 2 && free < ac->ac_g_ex.fe_len)
-		goto out;
-	if (unlikely(EXT4_MB_GRP_BBITMAP_CORRUPT(grp)))
-		goto out;
-	if (should_lock)
-		ext4_unlock_group(sb, group);
-
 	/* We only do this if the grp has never been initialized */
 	if (unlikely(EXT4_MB_GRP_NEED_INIT(grp))) {
 		ret = ext4_mb_init_group(ac->ac_sb, group, GFP_NOFS);
@@ -2202,8 +2189,9 @@ static int ext4_mb_good_group_nolock(struct ext4_allocation_context *ac,
 
 	if (should_lock)
 		ext4_lock_group(sb, group);
+
 	ret = ext4_mb_good_group(ac, group, cr);
-out:
+
 	if (should_lock)
 		ext4_unlock_group(sb, group);
 	return ret;
-- 
1.8.3.1