lkml.org 
[lkml]   [2023]   [Aug]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 6/8] bitmap: replace _reg_op(REG_OP_ISFREE) with find_next_bit()
Date
_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 --git a/lib/bitmap.c b/lib/bitmap.c
index 2898ec2bdef1..c29140e27d20 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -1356,7 +1356,7 @@ 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;
--
2.39.2
\
 
 \ /
  Last update: 2023-08-16 01:38    [W:0.383 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site