lib/test_bitmap.c: make use of EXP2_IN_BITS

Commit 30544ed ("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. Reported-by: Alex Shi <[email protected]> Signed-off-by: Andy Shevchenko <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Reviewed-by: Alex Shi <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Linus Torvalds <[email protected]>
ambv · Apr 7, 2020 · caa7f77 · caa7f77
1 parent 7e23452
commit caa7f77
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/lib/test_bitmap.c b/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);