From: Andrew Morton <akpm@linux-foundation.org>
Date: Thu, 9 May 2013 23:57:25 +0000 (+1000)
Subject: lib-bitmapc-speed-up-bitmap_find_free_region-fix
X-Git-Tag: next-20130521~1^2~116
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9ee746aa83bd7f204e571655afe1a0cadf7ef451;p=karo-tx-linux.git

lib-bitmapc-speed-up-bitmap_find_free_region-fix

reduce scope of locals, remove barely comprehensible comment

Cc: Chanho Min <chanho.min@lge.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Joe Perches <joe@perches.com>
Cc: Nadia Yvette Chambers <nyc@holomorphy.com>
Cc: anish singh <anish198519851985@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/lib/bitmap.c b/lib/bitmap.c
index 95e8efc18f68..ea190b7047c3 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -1114,13 +1114,15 @@ done:
  */
 int bitmap_find_free_region(unsigned long *bitmap, int bits, int order)
 {
-	int pos, end, nbit, i;	/* scans bitmap by regions of size order */
 	int nlongs = BITS_TO_LONGS(bits);
+	int i;
 
 	for (i = 0; i < nlongs; i++)
 		if (bitmap[i] != ~0UL) {
-			pos = i * BITS_PER_LONG;
-			nbit = min(bits, pos + BITS_PER_LONG);
+			int pos = i * BITS_PER_LONG;
+			int nbit = min(bits, pos + BITS_PER_LONG);
+			int end;
+
 			for (; (end = pos + (1 << order)) <= nbit; pos = end) {
 				if (!__reg_op(bitmap, pos, order,
 					REG_OP_ISFREE))