Re: [PATCH] dm vdo indexer: Use swap() instead of open coding it

From: Matthew Sakai
Date: Tue May 28 2024 - 22:02:15 EST


On 5/24/24 03:41, Jiapeng Chong wrote:
Swap is a function interface that provides exchange function. To avoid
code duplication, we can use swap function.

./drivers/md/dm-vdo/indexer/index.c:207:43-44: WARNING opportunity for swap().

Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9173
Signed-off-by: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx>

Reviewed-by: Matthew Sakai <msakai@xxxxxxxxxx>

Mike, can you make sure this gets applied with the rest of the pending dm patches?

---
drivers/md/dm-vdo/indexer/index.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/md/dm-vdo/indexer/index.c b/drivers/md/dm-vdo/indexer/index.c
index 1ba767144426..df4934846244 100644
--- a/drivers/md/dm-vdo/indexer/index.c
+++ b/drivers/md/dm-vdo/indexer/index.c
@@ -197,15 +197,12 @@ static int finish_previous_chapter(struct uds_index *index, u64 current_chapter_
static int swap_open_chapter(struct index_zone *zone)
{
int result;
- struct open_chapter_zone *temporary_chapter;
result = finish_previous_chapter(zone->index, zone->newest_virtual_chapter);
if (result != UDS_SUCCESS)
return result;
- temporary_chapter = zone->open_chapter;
- zone->open_chapter = zone->writing_chapter;
- zone->writing_chapter = temporary_chapter;
+ swap(zone->open_chapter, zone->writing_chapter);
return UDS_SUCCESS;
}