From: Wei Yang <richardw.yang@linux.intel.com>
To: Baoquan He <bhe@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
akpm@linux-foundation.org, dan.j.williams@intel.com,
richardw.yang@linux.intel.com, david@redhat.com
Subject: Re: [PATCH 4/7] mm/sparse.c: Use __get_free_pages() instead in populate_section_memmap()
Date: Mon, 10 Feb 2020 07:39:35 +0800 [thread overview]
Message-ID: <20200209233935.GB8705@richard> (raw)
In-Reply-To: <20200209104826.3385-5-bhe@redhat.com>
On Sun, Feb 09, 2020 at 06:48:23PM +0800, Baoquan He wrote:
>This removes the unnecessary goto, and simplify codes.
>
>Signed-off-by: Baoquan He <bhe@redhat.com>
Reasonable.
Reviewed-by: Wei Yang <richardw.yang@linux.intel.com>
>---
> mm/sparse.c | 16 ++++++----------
> 1 file changed, 6 insertions(+), 10 deletions(-)
>
>diff --git a/mm/sparse.c b/mm/sparse.c
>index cf55d272d0a9..36e6565ec67e 100644
>--- a/mm/sparse.c
>+++ b/mm/sparse.c
>@@ -751,23 +751,19 @@ static void free_map_bootmem(struct page *memmap)
> struct page * __meminit populate_section_memmap(unsigned long pfn,
> unsigned long nr_pages, int nid, struct vmem_altmap *altmap)
> {
>- struct page *page, *ret;
>+ struct page *ret;
> unsigned long memmap_size = sizeof(struct page) * PAGES_PER_SECTION;
>
>- page = alloc_pages(GFP_KERNEL|__GFP_NOWARN, get_order(memmap_size));
>- if (page)
>- goto got_map_page;
>+ ret = (void*)__get_free_pages(GFP_KERNEL|__GFP_NOWARN,
>+ get_order(memmap_size));
>+ if (ret)
>+ return ret;
>
> ret = vmalloc(memmap_size);
> if (ret)
>- goto got_map_ptr;
>+ return ret;
>
> return NULL;
>-got_map_page:
>- ret = (struct page *)pfn_to_kaddr(page_to_pfn(page));
>-got_map_ptr:
>-
>- return ret;
> }
>
> static void depopulate_section_memmap(unsigned long pfn, unsigned long nr_pages,
>--
>2.17.2
--
Wei Yang
Help you, Help me
next prev parent reply other threads:[~2020-02-09 23:39 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-09 10:48 [PATCH 0/7] mm/hotplug: Only use subsection in VMEMMAP case and fix hot add/remove failure in SPARSEMEM|!VMEMMAP case Baoquan He
2020-02-09 10:48 ` [PATCH 1/7] mm/sparse.c: Introduce new function fill_subsection_map() Baoquan He
2020-02-09 23:05 ` Wei Yang
2020-02-09 23:11 ` Wei Yang
2020-02-10 3:25 ` Baoquan He
2020-02-10 9:49 ` David Hildenbrand
2020-02-11 12:46 ` Baoquan He
2020-02-11 14:44 ` David Hildenbrand
2020-02-12 11:21 ` Baoquan He
2020-02-09 10:48 ` [PATCH 2/7] mm/sparse.c: Introduce a new function clear_subsection_map() Baoquan He
2020-02-09 23:07 ` Wei Yang
2020-02-10 3:36 ` Baoquan He
2020-02-10 6:02 ` Wei Yang
2020-02-09 10:48 ` [PATCH 3/7] mm/sparse.c: only use subsection map in VMEMMAP case Baoquan He
2020-02-09 23:23 ` Wei Yang
2020-02-11 14:43 ` David Hildenbrand
2020-02-12 11:26 ` Baoquan He
2020-02-11 20:14 ` Dan Williams
2020-02-12 9:39 ` David Hildenbrand
2020-02-12 11:20 ` Baoquan He
2020-02-12 15:48 ` Dan Williams
2020-02-09 10:48 ` [PATCH 4/7] mm/sparse.c: Use __get_free_pages() instead in populate_section_memmap() Baoquan He
2020-02-09 23:39 ` Wei Yang [this message]
2020-02-09 10:48 ` [PATCH 5/7] mm/sparse.c: update code comment about section activate/deactivate Baoquan He
2020-02-09 10:48 ` [PATCH 6/7] mm/sparsemem: pfn_to_page is not valid yet on SPARSEMEM Baoquan He
2020-02-10 3:45 ` Baoquan He
2020-02-09 10:48 ` [PATCH 7/7] mm/hotplug: fix hot remove failure in SPARSEMEM|!VMEMMAP case Baoquan He
2020-02-09 23:52 ` Wei Yang
2020-02-10 3:41 ` Baoquan He
2020-02-10 6:08 ` Wei Yang
2020-02-10 7:54 ` Baoquan He
2020-02-10 23:05 ` Wei Yang
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