Thread (2 messages) 2 messages, 2 authors, 2021-10-28

Re: [PATCH] raid5-ppl: use swap() to make code cleaner

From: Paul Menzel <hidden>
Date: 2021-10-28 06:33:08
Also in: lkml

Dear Yang,


Thank you for the patch.

On 28.10.21 03:00, Yang Guang wrote:
Using swap() make it more readable.
make*s*

Maybe:

Use the macro `swap()` defined in `include/linux/minmax.h` to avoid 
opencoding it.

By the way, there is also the Coccinelle script 
`scripts/coccinelle/misc/swap.cocci`.
quoted hunk ↗ jump to hunk
Reported-by: Zeal Robot <redacted>
Signed-off-by: Yang Guang <redacted>
---
  drivers/md/raid5-ppl.c | 6 ++----
  1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/md/raid5-ppl.c b/drivers/md/raid5-ppl.c
index 3ddc2aa0b530..4ab417915d7f 100644
--- a/drivers/md/raid5-ppl.c
+++ b/drivers/md/raid5-ppl.c
@@ -1081,7 +1081,7 @@ static int ppl_load_distributed(struct ppl_log *log)
  	struct ppl_conf *ppl_conf = log->ppl_conf;
  	struct md_rdev *rdev = log->rdev;
  	struct mddev *mddev = rdev->mddev;
-	struct page *page, *page2, *tmp;
+	struct page *page, *page2;
  	struct ppl_header *pplhdr = NULL, *prev_pplhdr = NULL;
  	u32 crc, crc_stored;
  	u32 signature;
@@ -1156,9 +1156,7 @@ static int ppl_load_distributed(struct ppl_log *log)
  		prev_pplhdr_offset = pplhdr_offset;
  		prev_pplhdr = pplhdr;
  
-		tmp = page;
-		page = page2;
-		page2 = tmp;
+		swap(page, page2);
  
  		/* calculate next potential ppl offset */
  		for (i = 0; i < le32_to_cpu(pplhdr->entries_count); i++)

Kind regards,

Paul
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