* [PATCH] btrfs/extent_map: Remove unneeded variable "ret"
@ 2018-08-04 11:13 zhong jiang
2018-08-04 12:29 ` Su Yue
2018-08-04 12:59 ` Lu Fengqi
0 siblings, 2 replies; 5+ messages in thread
From: zhong jiang @ 2018-08-04 11:13 UTC (permalink / raw)
To: clm, jbacik, dsterba; +Cc: linux-btrfs, linux-kernel
The ret is not used after initalization, So just remove it.
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
---
fs/btrfs/extent_map.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 6648d55..b48ab41 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -276,7 +276,6 @@ static void try_merge_map(struct extent_map_tree *tree, struct extent_map *em)
int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len,
u64 gen)
{
- int ret = 0;
struct extent_map *em;
bool prealloc = false;
@@ -308,7 +307,7 @@ int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len,
free_extent_map(em);
out:
write_unlock(&tree->lock);
- return ret;
+ return 0;
}
@@ -430,14 +429,13 @@ struct extent_map *search_extent_mapping(struct extent_map_tree *tree,
*/
int remove_extent_mapping(struct extent_map_tree *tree, struct extent_map *em)
{
- int ret = 0;
-
WARN_ON(test_bit(EXTENT_FLAG_PINNED, &em->flags));
rb_erase(&em->rb_node, &tree->map);
if (!test_bit(EXTENT_FLAG_LOGGING, &em->flags))
list_del_init(&em->list);
RB_CLEAR_NODE(&em->rb_node);
- return ret;
+
+ return 0;
}
void replace_extent_mapping(struct extent_map_tree *tree,
--
1.7.12.4
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] btrfs/extent_map: Remove unneeded variable "ret"
2018-08-04 11:13 [PATCH] btrfs/extent_map: Remove unneeded variable "ret" zhong jiang
@ 2018-08-04 12:29 ` Su Yue
2018-08-04 12:59 ` Lu Fengqi
1 sibling, 0 replies; 5+ messages in thread
From: Su Yue @ 2018-08-04 12:29 UTC (permalink / raw)
To: zhong jiang, clm, jbacik, dsterba; +Cc: linux-btrfs, linux-kernel, Su Yue
On 2018/8/4 7:13 PM, zhong jiang wrote:
> The ret is not used after initalization, So just remove it.
>
> Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Reviewed-by: Su Yue <suy.fnst@cn.fujitsu.com>
> ---
> fs/btrfs/extent_map.c | 8 +++-----
> 1 file changed, 3 insertions(+), 5 deletions(-)
>
> diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
> index 6648d55..b48ab41 100644
> --- a/fs/btrfs/extent_map.c
> +++ b/fs/btrfs/extent_map.c
> @@ -276,7 +276,6 @@ static void try_merge_map(struct extent_map_tree *tree, struct extent_map *em)
> int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len,
> u64 gen)
> {
> - int ret = 0;
> struct extent_map *em;
> bool prealloc = false;
>
> @@ -308,7 +307,7 @@ int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len,
> free_extent_map(em);
> out:
> write_unlock(&tree->lock);
> - return ret;
> + return 0;
>
> }
>
> @@ -430,14 +429,13 @@ struct extent_map *search_extent_mapping(struct extent_map_tree *tree,
> */
> int remove_extent_mapping(struct extent_map_tree *tree, struct extent_map *em)
> {
> - int ret = 0;
> -
> WARN_ON(test_bit(EXTENT_FLAG_PINNED, &em->flags));
> rb_erase(&em->rb_node, &tree->map);
> if (!test_bit(EXTENT_FLAG_LOGGING, &em->flags))
> list_del_init(&em->list);
> RB_CLEAR_NODE(&em->rb_node);
> - return ret;
> +
> + return 0;
> }
>
> void replace_extent_mapping(struct extent_map_tree *tree,
>
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] btrfs/extent_map: Remove unneeded variable "ret"
2018-08-04 11:13 [PATCH] btrfs/extent_map: Remove unneeded variable "ret" zhong jiang
2018-08-04 12:29 ` Su Yue
@ 2018-08-04 12:59 ` Lu Fengqi
2018-08-04 13:19 ` zhong jiang
1 sibling, 1 reply; 5+ messages in thread
From: Lu Fengqi @ 2018-08-04 12:59 UTC (permalink / raw)
To: zhong jiang; +Cc: clm, jbacik, dsterba, linux-btrfs, linux-kernel
On Sat, Aug 04, 2018 at 07:13:43PM +0800, zhong jiang wrote:
>The ret is not used after initalization, So just remove it.
So why not change these two functions to void function?
--
Thanks,
Lu
>
>Signed-off-by: zhong jiang <zhongjiang@huawei.com>
>---
> fs/btrfs/extent_map.c | 8 +++-----
> 1 file changed, 3 insertions(+), 5 deletions(-)
>
>diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
>index 6648d55..b48ab41 100644
>--- a/fs/btrfs/extent_map.c
>+++ b/fs/btrfs/extent_map.c
>@@ -276,7 +276,6 @@ static void try_merge_map(struct extent_map_tree *tree, struct extent_map *em)
> int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len,
> u64 gen)
> {
>- int ret = 0;
> struct extent_map *em;
> bool prealloc = false;
>
>@@ -308,7 +307,7 @@ int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len,
> free_extent_map(em);
> out:
> write_unlock(&tree->lock);
>- return ret;
>+ return 0;
>
> }
>
>@@ -430,14 +429,13 @@ struct extent_map *search_extent_mapping(struct extent_map_tree *tree,
> */
> int remove_extent_mapping(struct extent_map_tree *tree, struct extent_map *em)
> {
>- int ret = 0;
>-
> WARN_ON(test_bit(EXTENT_FLAG_PINNED, &em->flags));
> rb_erase(&em->rb_node, &tree->map);
> if (!test_bit(EXTENT_FLAG_LOGGING, &em->flags))
> list_del_init(&em->list);
> RB_CLEAR_NODE(&em->rb_node);
>- return ret;
>+
>+ return 0;
> }
>
> void replace_extent_mapping(struct extent_map_tree *tree,
>--
>1.7.12.4
>
>--
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>
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] btrfs/extent_map: Remove unneeded variable "ret"
2018-08-04 12:59 ` Lu Fengqi
@ 2018-08-04 13:19 ` zhong jiang
2018-08-04 16:35 ` Lu Fengqi
0 siblings, 1 reply; 5+ messages in thread
From: zhong jiang @ 2018-08-04 13:19 UTC (permalink / raw)
To: Lu Fengqi; +Cc: clm, jbacik, dsterba, linux-btrfs, linux-kernel
On 2018/8/4 20:59, Lu Fengqi wrote:
> On Sat, Aug 04, 2018 at 07:13:43PM +0800, zhong jiang wrote:
>> The ret is not used after initalization, So just remove it.
> So why not change these two functions to void function?
>
I just keep the original interface and make the minimal change.
of course, It is also feasible that make these two functions to void function.
I will repost if you prefer to that change. I am ok with that.
Thanks,
zhong jiang
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] btrfs/extent_map: Remove unneeded variable "ret"
2018-08-04 13:19 ` zhong jiang
@ 2018-08-04 16:35 ` Lu Fengqi
0 siblings, 0 replies; 5+ messages in thread
From: Lu Fengqi @ 2018-08-04 16:35 UTC (permalink / raw)
To: zhong jiang; +Cc: clm, jbacik, dsterba, linux-btrfs, linux-kernel
On Sat, Aug 04, 2018 at 09:19:37PM +0800, zhong jiang wrote:
>On 2018/8/4 20:59, Lu Fengqi wrote:
>> On Sat, Aug 04, 2018 at 07:13:43PM +0800, zhong jiang wrote:
>>> The ret is not used after initalization, So just remove it.
>> So why not change these two functions to void function?
>>
> I just keep the original interface and make the minimal change.
>of course, It is also feasible that make these two functions to void function.
>
>I will repost if you prefer to that change. I am ok with that.
Since the return value which always is 0 is meaningless, I would prefer
to make this change.
--
Thanks,
Lu
>
>Thanks,
>zhong jiang
>
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2018-08-04 16:36 UTC | newest]
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2018-08-04 11:13 [PATCH] btrfs/extent_map: Remove unneeded variable "ret" zhong jiang
2018-08-04 12:29 ` Su Yue
2018-08-04 12:59 ` Lu Fengqi
2018-08-04 13:19 ` zhong jiang
2018-08-04 16:35 ` Lu Fengqi
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