linux-ext4 - [PATCH] ext4: return 0 when ext4_get_group_info failed in __mb_check

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Date: Tue,  2 Jan 2024 19:20:12 +0800
From: yangerkun <yangerkun@...wei.com>
To: tytso@....edu,
	adilger.kernel@...ger.ca,
	jack@...e.cz
Cc: linux-ext4@...r.kernel.org
Subject: [PATCH] ext4: return 0 when ext4_get_group_info failed in __mb_check_buddy

The return value for __mb_check_buddy should be a integer. Found this by
code review.

Fixes: 5354b2af3406 ("ext4: allow ext4_get_group_info() to fail")
Signed-off-by: yangerkun <yangerkun@...wei.com>
---
 fs/ext4/mballoc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index d72b5e3c92ec..55c70a1b445a 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -758,7 +758,7 @@ static int __mb_check_buddy(struct ext4_buddy *e4b, char *file,
 
 	grp = ext4_get_group_info(sb, e4b->bd_group);
 	if (!grp)
-		return NULL;
+		return 0;
 	list_for_each(cur, &grp->bb_prealloc_list) {
 		ext4_group_t groupnr;
 		struct ext4_prealloc_space *pa;
-- 
2.39.2