linux-kernel - [PATCH V2 1/7] ext4: remove the 'group' parameter of ext4_trim

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Message-ID: <61eceb4c-6e5f-34d0-9317-a833d7c63b6f@gmail.com>
Date:   Wed, 26 May 2021 16:42:53 +0800
From:   Wang Jianchao <jianchao.wan9@...il.com>
To:     Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>
Cc:     linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
        lishujin@...ishou.com
Subject: [PATCH V2 1/7] ext4: remove the 'group' parameter of ext4_trim_extent

Get rid of the 'group' parameter of ext4_trim_extent as we can get
it from the 'e4b'.

Signed-off-by: Wang Jianchao <wangjianchao@...ishou.com>
---
 fs/ext4/mballoc.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index a02fadf..d81f1fd22 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -5650,19 +5650,19 @@ int ext4_group_add_blocks(handle_t *handle, struct super_block *sb,
  * @sb:		super block for the file system
  * @start:	starting block of the free extent in the alloc. group
  * @count:	number of blocks to TRIM
- * @group:	alloc. group we are working with
  * @e4b:	ext4 buddy for the group
  *
  * Trim "count" blocks starting at "start" in the "group". To assure that no
  * one will allocate those blocks, mark it as used in buddy bitmap. This must
  * be called with under the group lock.
  */
-static int ext4_trim_extent(struct super_block *sb, int start, int count,
-			     ext4_group_t group, struct ext4_buddy *e4b)
+static int ext4_trim_extent(struct super_block *sb,
+		int start, int count, struct ext4_buddy *e4b)
 __releases(bitlock)
 __acquires(bitlock)
 {
 	struct ext4_free_extent ex;
+	ext4_group_t group = e4b->bd_group;
 	int ret = 0;
 
 	trace_ext4_trim_extent(sb, group, start, count);
@@ -5738,8 +5738,7 @@ static int ext4_trim_extent(struct super_block *sb, int start, int count,
 		next = mb_find_next_bit(bitmap, max + 1, start);
 
 		if ((next - start) >= minblocks) {
-			ret = ext4_trim_extent(sb, start,
-					       next - start, group, &e4b);
+			ret = ext4_trim_extent(sb, start, next - start, &e4b);
 			if (ret && ret != -EOPNOTSUPP)
 				break;
 			ret = 0;
-- 
1.8.3.1