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-rw-r--r--drivers/md/bitmap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index f0769b3..7fc028f 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -651,7 +651,7 @@ static int bitmap_read_sb(struct bitmap *bitmap)
reason = "unrecognized superblock version";
else if (chunksize < 512)
reason = "bitmap chunksize too small";
- else if ((1 << ffz(~chunksize)) != chunksize)
+ else if (!is_power_of_2(chunksize))
reason = "bitmap chunksize not a power of 2";
else if (daemon_sleep < 1 || daemon_sleep > MAX_SCHEDULE_TIMEOUT)
reason = "daemon sleep period out of range";