If we come across bits that are already set, then it's quicker to test
that first and gate the test_and_set_bit() operation on the result of
the bit test.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 lib/sbitmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sbitmap.c b/lib/sbitmap.c
index c6e2f1f2c4d2..11b244a8d00f 100644
--- a/lib/sbitmap.c
+++ b/lib/sbitmap.c

@@ -166,7 +166,7 @@ static int __sbitmap_get_word(unsigned long *word, unsigned long depth,
 			return -1;
 		}
 
-		if (!test_and_set_bit_lock(nr, word))
+		if (!test_bit(nr, word) && !test_and_set_bit_lock(nr, word))
 			break;
 
 		hint = nr + 1;

-- 
2.33.0