From: Dmitry V. Levin <ldv@altlinux.org>
Date: Sun, 29 May 2016 22:15:53 +0000 (+0000)
Subject: loop.c: optimize decoding of paired ioctls
X-Git-Tag: v4.12~6
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=bece24d1c6e39e5ababd53c8f66b323fd2fab1ef;p=strace

loop.c: optimize decoding of paired ioctls

* loop.c (loop_ioctl): Optimize decoding of LOOP_[GS]ET_STATUS
and LOOP_[GS]ET_STATUS64 ioctl pairs.
---

diff --git a/loop.c b/loop.c
index 26aaca0b..178033d3 100644
--- a/loop.c
+++ b/loop.c
@@ -146,23 +146,19 @@ loop_ioctl(struct tcb *tcp, const unsigned int code, long arg)
 		return RVAL_DECODED;
 
 	switch (code) {
-	case LOOP_SET_STATUS:
-		decode_loop_info(tcp, arg);
-		break;
-
 	case LOOP_GET_STATUS:
 		if (entering(tcp))
 			return 0;
+		/* fall through */
+	case LOOP_SET_STATUS:
 		decode_loop_info(tcp, arg);
 		break;
 
-	case LOOP_SET_STATUS64:
-		decode_loop_info64(tcp, arg);
-		break;
-
 	case LOOP_GET_STATUS64:
 		if (entering(tcp))
 			return 0;
+		/* fall through */
+	case LOOP_SET_STATUS64:
 		decode_loop_info64(tcp, arg);
 		break;