diff options
| author | Robert P. J. Day <rpjday@crashcourse.ca> | 2008-02-06 01:36:51 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-06 10:41:03 -0800 |
| commit | 67a3b2b6ce09809b21f60401e81663f2c8131640 (patch) | |
| tree | 59005e55d1292762dca1bf58da81c3661982a905 /drivers/block/rd.c | |
| parent | 2118116e5ed2432a054d52f9925dbf92d2cb7279 (diff) | |
rd: use is_power_of_2() in drivers/block/rd.c.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block/rd.c')
| -rw-r--r-- | drivers/block/rd.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/block/rd.c b/drivers/block/rd.c index 82f4eecc869..06e23be7090 100644 --- a/drivers/block/rd.c +++ b/drivers/block/rd.c @@ -56,6 +56,7 @@ #include <linux/backing-dev.h> #include <linux/blkpg.h> #include <linux/writeback.h> +#include <linux/log2.h> #include <asm/uaccess.h> @@ -450,7 +451,7 @@ static int __init rd_init(void) err = -ENOMEM; if (rd_blocksize > PAGE_SIZE || rd_blocksize < 512 || - (rd_blocksize & (rd_blocksize-1))) { + !is_power_of_2(rd_blocksize)) { printk("RAMDISK: wrong blocksize %d, reverting to defaults\n", rd_blocksize); rd_blocksize = BLOCK_SIZE; |