From:   Kemeng Shi <shikemeng@huaweicloud.com>
To:     tytso@mit.edu, adilger.kernel@dilger.ca, jack@suse.cz,
        ojaswin@linux.ibm.com, ritesh.list@gmail.com
Cc:     linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org,
        shikemeng@huaweicloud.com
Subject: [PATCH v2 02/20] ext4: allow to find by goal if EXT4_MB_HINT_GOAL_ONLY is set
Date:   Tue, 28 Feb 2023 19:42:48 +0800
Message-Id: <20230228114306.3328235-3-shikemeng@huaweicloud.com>
In-Reply-To: <20230228114306.3328235-1-shikemeng@huaweicloud.com>
References: <20230228114306.3328235-1-shikemeng@huaweicloud.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

If EXT4_MB_HINT_GOAL_ONLY is set, ext4_mb_regular_allocator will only
allocate blocks from ext4_mb_find_by_goal. Allow to find by goal in
ext4_mb_find_by_goal if EXT4_MB_HINT_GOAL_ONLY is set or allocation
with EXT4_MB_HINT_GOAL_ONLY set will always fail.

EXT4_MB_HINT_GOAL_ONLY is not used at all, so the problem is not
found for now.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: Ojaswin Mujoo <ojaswin@linux.ibm.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 0650a1dc870e..375d9655b525 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2162,7 +2162,7 @@ int ext4_mb_find_by_goal(struct ext4_allocation_context *ac,
 	struct ext4_group_info *grp = ext4_get_group_info(ac->ac_sb, group);
 	struct ext4_free_extent ex;
 
-	if (!(ac->ac_flags & EXT4_MB_HINT_TRY_GOAL))
+	if (!(ac->ac_flags & (EXT4_MB_HINT_TRY_GOAL | EXT4_MB_HINT_GOAL_ONLY)))
 		return 0;
 	if (grp->bb_free == 0)
 		return 0;
-- 
2.30.0