diff mbox series

[v5,6/8] bitmap: replace _reg_op(REG_OP_ISFREE) with find_next_bit()

Message ID 20230925023817.782509-7-yury.norov@gmail.com
State New
Headers
Series bitmap: cleanup bitmap_*_region() implementation |

Commit Message

Yury Norov Sept. 25, 2023, 2:38 a.m. UTC 
  _reg_op(REG_OP_ISFREE) can be trivially replaced with find_next_bit().
Doing that opens room for potential small_const_nbits() optimization.

Signed-off-by: Yury Norov <yury.norov@gmail.com>
---
 lib/bitmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/lib/bitmap.c b/lib/bitmap.c
index 4dba15f2e970..9345a6ffe39d 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -1352,7 +1352,7 @@  int bitmap_allocate_region(unsigned long *bitmap, unsigned int pos, int order)
 {
 	unsigned int len = BIT(order);
 
-	if (!__reg_op(bitmap, pos, order, REG_OP_ISFREE))
+	if (find_next_bit(bitmap, pos + len, pos) < pos + len)
 		return -EBUSY;
 	bitmap_set(bitmap, pos, len);
 	return 0;