[PATCH 2/2] zram: handle mem suffixes in disk size zram_sysfsparameter (resend)

From: Sergey Senozhatsky
Date: Tue Oct 30 2012 - 15:44:50 EST


Use memparse() to allow mem suffixes in disksize sysfs number.
Examples:
echo 256K > /sys/block/zram0/disksize
echo 512M > /sys/block/zram0/disksize
echo 1G > /sys/block/zram0/disksize

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Reviewed-by: Nitin Gupta <ngupta@xxxxxxxxxx>

---

drivers/staging/zram/zram_sysfs.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/zram/zram_sysfs.c b/drivers/staging/zram/zram_sysfs.c
index edb0ed4..de1eacf 100644
--- a/drivers/staging/zram/zram_sysfs.c
+++ b/drivers/staging/zram/zram_sysfs.c
@@ -15,6 +15,7 @@
#include <linux/device.h>
#include <linux/genhd.h>
#include <linux/mm.h>
+#include <linux/kernel.h>

#include "zram_drv.h"

@@ -54,13 +55,12 @@ static ssize_t disksize_show(struct device *dev,
static ssize_t disksize_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t len)
{
- int ret;
u64 disksize;
struct zram *zram = dev_to_zram(dev);

- ret = kstrtoull(buf, 10, &disksize);
- if (ret)
- return ret;
+ disksize = memparse(buf, NULL);
+ if (!disksize)
+ return -EINVAL;

down_write(&zram->init_lock);
if (zram->init_done) {


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