[patch 121/166] lib/test_bitmap.c: make use of EXP2_IN_BITS

Andrew Morton
2020-04-07T03:10:31Z

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: lib/test_bitmap.c: make use of EXP2_IN_BITS

Commit 30544ed5de43 ("lib/bitmap: introduce bitmap_replace() helper")
introduced some new test cases to the test_bitmap.c module. Among these
it also introduced an (unused) definition. Let's make use of
EXP2_IN_BITS.

Link: http://lkml.kernel.org/r/20200121151847.75223-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reported-by: Alex Shi <alex.shi@linux.alibaba.com>
Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

lib/test_bitmap.c | 2 ++
1 file changed, 2 insertions(+)

--- a/lib/test_bitmap.c~lib-test_bitmap-make-use-of-exp2_in_bits
+++ a/lib/test_bitmap.c
@@ -278,6 +278,8 @@ static void __init test_replace(void)
unsigned int nlongs = DIV_ROUND_UP(nbits, BITS_PER_LONG);
DECLARE_BITMAP(bmap, 1024);

+ BUILD_BUG_ON(EXP2_IN_BITS < nbits * 2);
+
bitmap_zero(bmap, 1024);
bitmap_replace(bmap, &exp2[0 * nlongs], &exp2[1 * nlongs], exp2_to_exp3_mask, nbits);
expect_eq_bitmap(bmap, exp3_0_1, nbits);
_