> On May 26, 2021, at 2:42 AM, Wang Jianchao <jianchao.wan9@xxxxxxxxx> wrote:
>
> Get rid of the 'group' parameter of ext4_trim_extent as we can get
> it from the 'e4b'.
>
> Signed-off-by: Wang Jianchao <wangjianchao@xxxxxxxxxxxx>
Reviewed-by: Andreas Dilger <adilger@xxxxxxxxx>
> ---
> 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
Cheers, Andreas
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