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Commit 7034ed13 authored by Namjae Jeon's avatar Namjae Jeon Committed by Fengguang Wu
Browse files

backing-dev: use kstrto* in preference to simple_strtoul 



Fix checkpatch warnings:

WARNING: consider using kstrto* in preference to simple_strtoul

for the below sys entry parsers:
/sys/block/<block device>/bdi/read_ahead_kb
/sys/block/<block device>/bdi/max_ratio
/sys/block/<block device>/bdi/min_ratio

Signed-off-by: default avatarNamjae Jeon <linkinjeon@gmail.com>
Signed-off-by: default avatarVivek Trivedi <vtrivedi018@gmail.com>
parent fea7a08a

mm/backing-dev.c

+26 −24
Original line number Diff line number Diff line
@@ -158,16 +158,16 @@ static ssize_t read_ahead_kb_store(struct device *dev, 
				  const char *buf, size_t count)

{

	struct backing_dev_info *bdi = dev_get_drvdata(dev);

	char *end;

	unsigned long read_ahead_kb;

	ssize_t ret = -EINVAL;

	ssize_t ret;



	read_ahead_kb = simple_strtoul(buf, &end, 10);

	if (*buf && (end[0] == '\0' || (end[0] == '\n' && end[1] == '\0'))) {

		bdi->ra_pages = read_ahead_kb >> (PAGE_SHIFT - 10);

		ret = count;

	}

	ret = kstrtoul(buf, 10, &read_ahead_kb);

	if (ret < 0)

		return ret;



	bdi->ra_pages = read_ahead_kb >> (PAGE_SHIFT - 10);



	return count;

}



#define K(pages) ((pages) << (PAGE_SHIFT - 10))
@@ -187,16 +187,17 @@ static ssize_t min_ratio_store(struct device *dev, 
		struct device_attribute *attr, const char *buf, size_t count)

{

	struct backing_dev_info *bdi = dev_get_drvdata(dev);

	char *end;

	unsigned int ratio;

	ssize_t ret = -EINVAL;

	ssize_t ret;



	ret = kstrtouint(buf, 10, &ratio);

	if (ret < 0)

		return ret;



	ratio = simple_strtoul(buf, &end, 10);

	if (*buf && (end[0] == '\0' || (end[0] == '\n' && end[1] == '\0'))) {

	ret = bdi_set_min_ratio(bdi, ratio);

	if (!ret)

		ret = count;

	}



	return ret;

}

BDI_SHOW(min_ratio, bdi->min_ratio)
@@ -205,16 +206,17 @@ static ssize_t max_ratio_store(struct device *dev, 
		struct device_attribute *attr, const char *buf, size_t count)

{

	struct backing_dev_info *bdi = dev_get_drvdata(dev);

	char *end;

	unsigned int ratio;

	ssize_t ret = -EINVAL;

	ssize_t ret;



	ret = kstrtouint(buf, 10, &ratio);

	if (ret < 0)

		return ret;



	ratio = simple_strtoul(buf, &end, 10);

	if (*buf && (end[0] == '\0' || (end[0] == '\n' && end[1] == '\0'))) {

	ret = bdi_set_max_ratio(bdi, ratio);

	if (!ret)

		ret = count;

	}



	return ret;

}

BDI_SHOW(max_ratio, bdi->max_ratio)