The patch titled
Subject: memory tier: release the new_memtier in find_create_memory_tier()
has been added to the -mm mm-unstable branch. Its filename is
memory-tier-release-the-new_memtier-in-find_create_memory_tier.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/memory-tier-release-the-new_memtier-in-find_create_memory_tier.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Tong Tiangen <tongtiangen@xxxxxxxxxx>
Subject: memory tier: release the new_memtier in find_create_memory_tier()
Date: Sun, 29 Jan 2023 04:06:51 +0000
In find_create_memory_tier(), if failed to register device, then we should
release new_memtier from the tier list and put device instead of memtier.
Link: https://lkml.kernel.org/r/20230129040651.1329208-1-tongtiangen@xxxxxxxxxx
Fixes: 9832fb87834e ("mm/demotion: expose memory tier details via sysfs")
Signed-off-by: Tong Tiangen <tongtiangen@xxxxxxxxxx>
Cc: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
Cc: Hanjun Guo <guohanjun@xxxxxxxxxx>
Cc: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: Guohanjun <guohanjun@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/memory-tiers.c~memory-tier-release-the-new_memtier-in-find_create_memory_tier
+++ a/mm/memory-tiers.c
@@ -211,8 +211,8 @@ static struct memory_tier *find_create_m
ret = device_register(&new_memtier->dev);
if (ret) {
- list_del(&memtier->list);
- put_device(&memtier->dev);
+ list_del(&new_memtier->list);
+ put_device(&new_memtier->dev);
return ERR_PTR(ret);
}
memtier = new_memtier;
_
Patches currently in -mm which might be from tongtiangen@xxxxxxxxxx are
memory-tier-release-the-new_memtier-in-find_create_memory_tier.patch
