From: Thorsten Blum <thorsten.blum@linux.dev>
Date: Fri, 11 Apr 2025 19:20:51 +0000 (+0200)
Subject: crypto: skcipher - Realign struct skcipher_walk to save 8 bytes
X-Git-Tag: v6.16-rc1~206^2~268
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=66fecd9d94034b6193636fe3bc01f089439f5413;p=thirdparty%2Fkernel%2Flinux.git

crypto: skcipher - Realign struct skcipher_walk to save 8 bytes

Reduce skcipher_walk's struct size by 8 bytes by realigning its members.

pahole output before:

  /* size: 120, cachelines: 2, members: 13 */
  /* sum members: 108, holes: 2, sum holes: 8 */
  /* padding: 4 */
  /* last cacheline: 56 bytes */

and after:

  /* size: 112, cachelines: 2, members: 13 */
  /* padding: 4 */
  /* last cacheline: 48 bytes */

No functional changes intended.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/include/crypto/internal/skcipher.h b/include/crypto/internal/skcipher.h
index a958ab0636ad0..0cad8e7364c8e 100644
--- a/include/crypto/internal/skcipher.h
+++ b/include/crypto/internal/skcipher.h
@@ -67,8 +67,6 @@ struct skcipher_walk {
 		struct scatter_walk in;
 	};
 
-	unsigned int nbytes;
-
 	union {
 		/* Virtual address of the destination. */
 		struct {
@@ -81,6 +79,7 @@ struct skcipher_walk {
 		struct scatter_walk out;
 	};
 
+	unsigned int nbytes;
 	unsigned int total;
 
 	u8 *page;