在 2025/1/7 18:15, David Hildenbrand 写道:
On 07.01.25 11:09, Shiyang Ruan wrote:
No need to specific position at the first writing to the buf because the
@len is always 0 at this time. Use sysfs_emit() instead to simplify it.
Signed-off-by: Shiyang Ruan <ruansy.fnst@xxxxxxxxxxx>
---
drivers/base/memory.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 67858eeb92ed..d77a83c9af39 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -469,19 +469,17 @@ static ssize_t valid_zones_show(struct device *dev,
default_zone = mem->zone;
if (!default_zone)
return sysfs_emit(buf, "%s\n", "none");
- len += sysfs_emit_at(buf, len, "%s", default_zone->name);
- goto out;
+ return sysfs_emit(buf, "%s\n", default_zone->name);
We can go one step further and do:
return sysfs_emit(buf, "%s\n",
mem->zone ? mem->zone->name : "none");
Avoiding setting/checking default_zone.
I have thought about it but it would cause the line over long. Now that
it doesn't matter, I'll make the chage as you suggested and send a new
version.
Thanks!
--
Ruan.
