From: Joe Perches <joe@xxxxxxxxxxx>
Subject: mm:backing-dev: use sysfs_emit in macro defining functions
The cocci script used in commit bdacbb8d04f ("mm: Use sysfs_emit for
struct kobject * uses") does not convert the name##_show macro because the
macro uses concatenation via ##.
Convert it by hand.
Link: https://lkml.kernel.org/r/45ec6cfc177d743f9c0ebaf35e43969dce43af42.1605376435.git.joe@xxxxxxxxxxx
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/backing-dev.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/mm/backing-dev.c~mm-backing-dev-use-sysfs_emit-in-macro-defining-functions
+++ a/mm/backing-dev.c
@@ -150,11 +150,11 @@ static ssize_t read_ahead_kb_store(struc
#define BDI_SHOW(name, expr) \
static ssize_t name##_show(struct device *dev, \
- struct device_attribute *attr, char *page) \
+ struct device_attribute *attr, char *buf) \
{ \
struct backing_dev_info *bdi = dev_get_drvdata(dev); \
\
- return snprintf(page, PAGE_SIZE-1, "%lld\n", (long long)expr); \
+ return sysfs_emit(buf, "%lld\n", (long long)expr); \
} \
static DEVICE_ATTR_RW(name);
@@ -200,11 +200,11 @@ BDI_SHOW(max_ratio, bdi->max_ratio)
static ssize_t stable_pages_required_show(struct device *dev,
struct device_attribute *attr,
- char *page)
+ char *buf)
{
dev_warn_once(dev,
"the stable_pages_required attribute has been removed. Use the stable_writes queue attribute instead.\n");
- return snprintf(page, PAGE_SIZE-1, "%d\n", 0);
+ return sysfs_emit(buf, "%d\n", 0);
}
static DEVICE_ATTR_RO(stable_pages_required);
_
