From: Michal Hocko <mhocko@kernel.org>
To: Oscar Salvador <osalvador@suse.de>
Cc: akpm@linux-foundation.org, david@redhat.com,
dan.j.williams@intel.com, Jonathan.Cameron@huawei.com,
anshuman.khandual@arm.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH 1/4] mm, memory_hotplug: cleanup memory offline path
Date: Wed, 3 Apr 2019 10:43:44 +0200 [thread overview]
Message-ID: <20190403084344.GD15605@dhcp22.suse.cz> (raw)
In-Reply-To: <20190328134320.13232-2-osalvador@suse.de>
On Thu 28-03-19 14:43:17, Oscar Salvador wrote:
> From: Michal Hocko <mhocko@suse.com>
>
> check_pages_isolated_cb currently accounts the whole pfn range as being
> offlined if test_pages_isolated suceeds on the range. This is based on
> the assumption that all pages in the range are freed which is currently
> the case in most cases but it won't be with later changes, as pages
> marked as vmemmap won't be isolated.
>
> Move the offlined pages counting to offline_isolated_pages_cb and
> rely on __offline_isolated_pages to return the correct value.
> check_pages_isolated_cb will still do it's primary job and check the pfn
> range.
>
> While we are at it remove check_pages_isolated and offline_isolated_pages
> and use directly walk_system_ram_range as do in online_pages.
>
> Signed-off-by: Michal Hocko <mhocko@suse.com>
> Signed-off-by: Oscar Salvador <osalvador@suse.de>
Can we merge this even without the rest of the series? It looks like a
useful thing regardless of this series. Sure we do not really use it
right now but it cleans up the code and actually removes more than it
adds...
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2019-04-03 8:43 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-28 13:43 [PATCH 0/4] mm,memory_hotplug: allocate memmap from hotadded memory Oscar Salvador
2019-03-28 13:43 ` [PATCH 1/4] mm, memory_hotplug: cleanup memory offline path Oscar Salvador
2019-04-03 8:43 ` Michal Hocko [this message]
2019-03-28 13:43 ` [PATCH 2/4] mm, memory_hotplug: provide a more generic restrictions for memory hotplug Oscar Salvador
2019-04-03 8:46 ` Michal Hocko
2019-04-03 8:48 ` David Hildenbrand
2019-04-04 10:04 ` Oscar Salvador
2019-04-04 10:06 ` David Hildenbrand
2019-04-04 10:31 ` Michal Hocko
2019-04-04 12:04 ` Oscar Salvador
2019-03-28 13:43 ` [PATCH 3/4] mm, memory_hotplug: allocate memmap from the added memory range for sparse-vmemmap Oscar Salvador
2019-03-28 13:43 ` [PATCH 4/4] mm, sparse: rename kmalloc_section_memmap, __kfree_section_memmap Oscar Salvador
2019-03-28 15:09 ` [PATCH 0/4] mm,memory_hotplug: allocate memmap from hotadded memory David Hildenbrand
2019-03-28 15:31 ` David Hildenbrand
2019-03-29 8:45 ` Oscar Salvador
2019-03-29 8:56 ` David Hildenbrand
2019-03-29 9:01 ` David Hildenbrand
2019-03-29 9:20 ` Oscar Salvador
2019-03-29 13:42 ` Michal Hocko
2019-04-01 7:59 ` Oscar Salvador
2019-04-01 11:53 ` Michal Hocko
2019-04-02 8:28 ` Oscar Salvador
2019-04-02 8:39 ` David Hildenbrand
2019-04-02 12:48 ` Michal Hocko
2019-04-03 8:01 ` Oscar Salvador
2019-04-03 8:12 ` Michal Hocko
2019-04-03 8:17 ` David Hildenbrand
2019-04-03 8:37 ` Michal Hocko
2019-04-03 8:41 ` David Hildenbrand
2019-04-03 8:49 ` Michal Hocko
2019-04-03 8:53 ` David Hildenbrand
2019-04-03 8:50 ` Oscar Salvador
2019-04-03 8:54 ` David Hildenbrand
2019-04-03 9:40 ` Oscar Salvador
2019-04-03 10:46 ` Michal Hocko
2019-04-04 10:25 ` Vlastimil Babka
2019-04-03 8:34 ` Oscar Salvador
2019-04-03 8:36 ` David Hildenbrand
2019-03-29 8:30 ` Oscar Salvador
2019-03-29 8:51 ` David Hildenbrand
2019-03-29 22:23 ` John Hubbard
2019-04-01 7:52 ` Oscar Salvador
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