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authorNamjae Jeon <linkinjeon@gmail.com>2012-08-25 16:57:27 +0800
committerFengguang Wu <fengguang.wu@intel.com>2012-08-25 16:58:14 +0800
commit7034ed132f0af8526f4a8eb7229dd25366a20bfa (patch)
tree3cd26e2341d4b8ff82915699a5e835c61656b4a8 /mm/backing-dev.c
parentfea7a08acb13524b47711625eebea40a0ede69a0 (diff)
downloadlinux-7034ed132f0af8526f4a8eb7229dd25366a20bfa.tar.gz
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: Namjae Jeon <linkinjeon@gmail.com> Signed-off-by: Vivek Trivedi <vtrivedi018@gmail.com>
Diffstat (limited to 'mm/backing-dev.c')
-rw-r--r--mm/backing-dev.c50
1 files changed, 26 insertions, 24 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index b41823cc05e..d3ca2b3ee17 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -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;
- }
- return ret;
+ 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;
+
+ ret = bdi_set_min_ratio(bdi, ratio);
+ if (!ret)
+ ret = count;
- 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;
+
+ ret = bdi_set_max_ratio(bdi, ratio);
+ if (!ret)
+ ret = count;
- 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)