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btrfs: use BTRFS_ATTR instead of btrfs_no_store() 

we have BTRFS_ATTR define to create sysfs RO file, use that.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Anand Jain 2014-07-30 20:04:07 +08:00 committed by Chris Mason
parent 160f4089c8
commit 3f4b57e09d
1 changed files with 3 additions and 10 deletions
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13
fs/btrfs/sysfs.c
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@ -403,13 +403,6 @@ static ssize_t btrfs_label_store(struct kobject *kobj,
}
BTRFS_ATTR_RW(label, 0644, btrfs_label_show, btrfs_label_store);
static ssize_t btrfs_no_store(struct kobject *kobj,
struct kobj_attribute *a,
const char *buf, size_t len)
{
return -EPERM;
}
static ssize_t btrfs_nodesize_show(struct kobject *kobj,
struct kobj_attribute *a, char *buf)
{
@ -418,7 +411,7 @@ static ssize_t btrfs_nodesize_show(struct kobject *kobj,
return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->nodesize);
}
BTRFS_ATTR_RW(nodesize, 0444, btrfs_nodesize_show, btrfs_no_store);
BTRFS_ATTR(nodesize, 0444, btrfs_nodesize_show);
static ssize_t btrfs_sectorsize_show(struct kobject *kobj,
struct kobj_attribute *a, char *buf)
@ -428,7 +421,7 @@ static ssize_t btrfs_sectorsize_show(struct kobject *kobj,
return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->sectorsize);
}
BTRFS_ATTR_RW(sectorsize, 0444, btrfs_sectorsize_show, btrfs_no_store);
BTRFS_ATTR(sectorsize, 0444, btrfs_sectorsize_show);
static ssize_t btrfs_clone_alignment_show(struct kobject *kobj,
struct kobj_attribute *a, char *buf)
@ -438,7 +431,7 @@ static ssize_t btrfs_clone_alignment_show(struct kobject *kobj,
return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->sectorsize);
}
BTRFS_ATTR_RW(clone_alignment, 0444, btrfs_clone_alignment_show, btrfs_no_store);
BTRFS_ATTR(clone_alignment, 0444, btrfs_clone_alignment_show);
static struct attribute *btrfs_attrs[] = {
BTRFS_ATTR_PTR(label),