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Commit 67a3b2b6 authored by Robert P. J. Day's avatar Robert P. J. Day Committed by Linus Torvalds
Browse files

rd: use is_power_of_2() in drivers/block/rd.c. 



Signed-off-by: default avatarRobert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 2118116e

drivers/block/rd.c

+2 −1
Original line number Diff line number Diff line
@@ -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;