[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20231120102734.2001576-1-sumanthk@linux.ibm.com>
Date: Mon, 20 Nov 2023 11:27:31 +0100
From: Sumanth Korikkar <sumanthk@...ux.ibm.com>
To: linux-mm <linux-mm@...ck.org>,
Andrew Morton <akpm@...ux-foundation.org>,
David Hildenbrand <david@...hat.com>
Cc: Oscar Salvador <osalvador@...e.de>, Michal Hocko <mhocko@...e.com>,
"Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
Anshuman Khandual <anshuman.khandual@....com>,
Gerald Schaefer <gerald.schaefer@...ux.ibm.com>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
linux-s390 <linux-s390@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>, <stable@...r.kernel.org>
Subject: [PATCH v2 0/3] mm/memory_hotplug: fixes for memory hotplug altmap support
Patch 1 adds the missing lock in memory hotplug operations,
ensuring that the mem_hotplug_lock is held during critical operations
like mhp_init_memmap_on_memory() and mhp_deinit_memmap_on_memory()
Patch 2 deals with error handling in add_memory_resource() and considers
the possibility of altmap support. This ensures proper deallocation of
struct pages, aligning with the allocation strategy.
Patch 3 relocates the vmem_altmap code to sparse-vmemmap.c, enabling the
utilization of vmem_altmap_free() and vmem_altmap_offset() without the
dependency on CONFIG_ZONE_DEVICE.
v2:
* cc: stable@...r.kernel.org
* made vmem_altmap_offset()/vmem_altmap_free() inline.
* added Acked-by for patch 1 and patch 2.
v1:
Changes since patch series "implement "memmap on memory" feature on
s390:
Patch 1 (Feedback from David):
* Fixed subject for memory hotplug lock.
* Added locking comments before
memory_block_online()/memory_block_offline().
Patch 2 (Feedback from David):
* Fixed Fixes-by commit.
Patch 3 (lkp report):
* when CONFIG_SPARSEMEM_VMEMMAP is disabled, resolve
undefined reference to `vmem_altmap_offset' error.
* Request for Reviewed-by once again due to the change in patch3.
Thank you
Sumanth Korikkar (3):
mm/memory_hotplug: add missing mem_hotplug_lock
mm/memory_hotplug: fix error handling in add_memory_resource()
mm: use vmem_altmap code without CONFIG_ZONE_DEVICE
drivers/base/memory.c | 18 +++++++++++++++---
include/linux/memremap.h | 12 ------------
include/linux/mm.h | 26 ++++++++++++++++++++++++++
mm/memory_hotplug.c | 15 +++++++--------
mm/memremap.c | 14 +-------------
5 files changed, 49 insertions(+), 36 deletions(-)
--
2.41.0
Powered by blists - more mailing lists