linux-kernel - [PATCH 2/4] Staging: zram: round up the disk size provided by user

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Date:	Fri, 17 Dec 2010 17:02:28 +0100
From:	Jerome Marchand <jmarchan@...hat.com>
To:	Greg Kroah-Hartman <gregkh@...e.de>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Nitin Gupta <ngupta@...are.org>
Subject: [PATCH 2/4] Staging: zram: round up the disk size provided by user


Currently disksize_store() round down the disk size provided by user.
This is probably not what one would expect, so round up instead.

Signed-off-by: Jerome Marchand <jmarchan@...hat.com>
---
 zram_sysfs.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/zram/zram_sysfs.c b/drivers/staging/zram/zram_sysfs.c
index ad62db2..a70cc01 100644
--- a/drivers/staging/zram/zram_sysfs.c
+++ b/drivers/staging/zram/zram_sysfs.c
@@ -14,6 +14,7 @@
 
 #include <linux/device.h>
 #include <linux/genhd.h>
+#include <linux/mm.h>
 
 #include "zram_drv.h"
 
@@ -65,7 +66,7 @@ static ssize_t disksize_store(struct device *dev,
 	if (ret)
 		return ret;
 
-	zram->disksize &= PAGE_MASK;
+	zram->disksize = PAGE_ALIGN(zram->disksize);
 	set_capacity(zram->disk, zram->disksize >> SECTOR_SHIFT);
 
 	return len;
--
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