On Aug 17, 2020, at 1:36 AM, brookxu <brookxu.cn@xxxxxxxxx> wrote:
>
> Reorganize the if statement of ext4_mb_release_context(), make it
> easier to read.
>
> Signed-off-by: Chunguang Xu <brookxu@xxxxxxxxxxx>
Reviewed-by: Andreas Dilger <adilger@xxxxxxxxx>
> ---
> fs/ext4/mballoc.c | 27 +++++++++++++--------------
> 1 file changed, 13 insertions(+), 14 deletions(-)
>
> diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
> index 70b110f..51f37f1 100644
> --- a/fs/ext4/mballoc.c
> +++ b/fs/ext4/mballoc.c
> @@ -4567,20 +4567,19 @@ static int ext4_mb_release_context(struct ext4_allocation_context *ac)
> pa->pa_free -= ac->ac_b_ex.fe_len;
> pa->pa_len -= ac->ac_b_ex.fe_len;
> spin_unlock(&pa->pa_lock);
> - }
> - }
> - if (pa) {
> - /*
> - * We want to add the pa to the right bucket.
> - * Remove it from the list and while adding
> - * make sure the list to which we are adding
> - * doesn't grow big.
> - */
> - if ((pa->pa_type == MB_GROUP_PA) && likely(pa->pa_free)) {
> - spin_lock(pa->pa_obj_lock);
> - list_del_rcu(&pa->pa_inode_list);
> - spin_unlock(pa->pa_obj_lock);
> - ext4_mb_add_n_trim(ac);
> +
> + /*
> + * We want to add the pa to the right bucket.
> + * Remove it from the list and while adding
> + * make sure the list to which we are adding
> + * doesn't grow big.
> + */
> + if (likely(pa->pa_free)) {
> + spin_lock(pa->pa_obj_lock);
> + list_del_rcu(&pa->pa_inode_list);
> + spin_unlock(pa->pa_obj_lock);
> + ext4_mb_add_n_trim(ac);
> + }
> }
> ext4_mb_put_pa(ac, ac->ac_sb, pa);
> }
> --
> 1.8.3.1
>
>
Cheers, Andreas
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