* [PATCH v2 1/3] ext4: reorganize if statement of ext4_mb_release_context()
@ 2020-08-05 1:01 brookxu
2020-08-05 4:43 ` Andreas Dilger
0 siblings, 1 reply; 2+ messages in thread
From: brookxu @ 2020-08-05 1:01 UTC (permalink / raw)
To: tytso, adilger.kernel, linux-kernel; +Cc: linux-ext4
Reorganize the if statement of ext4_mb_release_context(), make it
easier to read.
Signed-off-by: Chunguang Xu <brookxu@tencent.com>
---
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 c0a331e..4f21f34 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4564,20 +4564,19 @@ 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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2 1/3] ext4: reorganize if statement of ext4_mb_release_context()
2020-08-05 1:01 [PATCH v2 1/3] ext4: reorganize if statement of ext4_mb_release_context() brookxu
@ 2020-08-05 4:43 ` Andreas Dilger
0 siblings, 0 replies; 2+ messages in thread
From: Andreas Dilger @ 2020-08-05 4:43 UTC (permalink / raw)
To: brookxu
Cc: Theodore Ts'o, Linux Kernel Mailing List, Ext4 Developers List
[-- Attachment #1: Type: text/plain, Size: 1948 bytes --]
On Aug 4, 2020, at 7:01 PM, brookxu <brookxu.cn@gmail.com> wrote:
>
> Reorganize the if statement of ext4_mb_release_context(), make it
> easier to read.
>
> Signed-off-by: Chunguang Xu <brookxu@tencent.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
> ---
> 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 c0a331e..4f21f34 100644
> --- a/fs/ext4/mballoc.c
> +++ b/fs/ext4/mballoc.c
> @@ -4564,20 +4564,19 @@ 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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