On Sun, Nov 01, 2020 at 12:12:51PM -0800, Joe Perches wrote:
> @@ -4024,7 +4024,7 @@ int __init shmem_init(void)
>
> #if defined(CONFIG_TRANSPARENT_HUGEPAGE) && defined(CONFIG_SYSFS)
> static ssize_t shmem_enabled_show(struct kobject *kobj,
> - struct kobj_attribute *attr, char *buf)
> + struct kobj_attribute *attr, char *buf)
> {
> static const int values[] = {
> SHMEM_HUGE_ALWAYS,
Why?
> @@ -4034,16 +4034,19 @@ static ssize_t shmem_enabled_show(struct kobject *kobj,
> SHMEM_HUGE_DENY,
> SHMEM_HUGE_FORCE,
> };
> - int i, count;
> -
> - for (i = 0, count = 0; i < ARRAY_SIZE(values); i++) {
> - const char *fmt = shmem_huge == values[i] ? "[%s] " : "%s ";
> + int len = 0;
> + int i;
Better:
int i, len = 0;
> - count += sprintf(buf + count, fmt,
> - shmem_format_huge(values[i]));
> + for (i = 0; i < ARRAY_SIZE(values); i++) {
> + len += sysfs_emit_at(buf, len,
> + shmem_huge == values[i] ? "%s[%s]" : "%s%s",
> + i ? " " : "",
> + shmem_format_huge(values[i]));
This is ... complicated. I thought the point of doing all the sysfs_emit
stuff was to simplify things.
