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Code Issues Releases Wiki Activity

bitmap: replace _reg_op(REG_OP_ISFREE) with find_next_bit() 

_reg_op(REG_OP_ISFREE) can be trivially replaced with find_next_bit().
Doing that opens room for potential small_const_nbits() optimization.

CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
CC: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Yury Norov <yury.norov@gmail.com>
This commit is contained in:
Yury Norov 2023-09-24 19:38:15 -07:00
parent add00c76ee
commit 9276819a68
1 changed files with 1 additions and 1 deletions
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2
lib/bitmap.c
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@ -840,7 +840,7 @@ 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;