From: Wei Yang <richard.weiyang@gmail.com>
To: mhocko@suse.com, linux-mm@kvack.org
Cc: Wei Yang <richard.weiyang@gmail.com>
Subject: [RFC PATCH 2/4] mm/hotplug: walk_memroy_range on memory_block uit
Date: Sun, 25 Jun 2017 10:52:25 +0800 [thread overview]
Message-ID: <20170625025227.45665-3-richard.weiyang@gmail.com> (raw)
In-Reply-To: <20170625025227.45665-1-richard.weiyang@gmail.com>
hotplug memory range is memory_block aligned and walk_memroy_range guarded
with check_hotplug_memory_range(). This is save to iterate on the
memory_block base.
This patch adjust the iteration unit and assume there is not hole in
hotplug memory range.
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
---
mm/memory_hotplug.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index f5d06afc8645..a79a83ec965f 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1858,17 +1858,11 @@ int walk_memory_range(unsigned long start_pfn, unsigned long end_pfn,
unsigned long pfn, section_nr;
int ret;
- for (pfn = start_pfn; pfn < end_pfn; pfn += PAGES_PER_SECTION) {
+ for (pfn = start_pfn; pfn < end_pfn;
+ pfn += PAGES_PER_SECTION * sections_per_block) {
section_nr = pfn_to_section_nr(pfn);
- if (!present_section_nr(section_nr))
- continue;
section = __nr_to_section(section_nr);
- /* same memblock? */
- if (mem)
- if ((section_nr >= mem->start_section_nr) &&
- (section_nr <= mem->end_section_nr))
- continue;
mem = find_memory_block_hinted(section, mem);
if (!mem)
--
2.11.0
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2017-06-25 2:53 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-25 2:52 [RFC PATCH 0/4] mm/hotplug: make hotplug memory_block alligned Wei Yang
2017-06-25 2:52 ` [RFC PATCH 1/4] mm/hotplug: aligne the hotplugable range with memory_block Wei Yang
2017-06-25 3:31 ` John Hubbard
2017-06-26 0:20 ` Wei Yang
2017-06-26 6:49 ` John Hubbard
2017-06-26 23:21 ` Wei Yang
2017-06-25 2:52 ` Wei Yang [this message]
2017-06-26 7:32 ` [RFC PATCH 2/4] mm/hotplug: walk_memroy_range on memory_block uit John Hubbard
2017-06-26 23:40 ` Wei Yang
2017-06-27 6:59 ` John Hubbard
2017-06-28 0:11 ` Wei Yang
2017-06-25 2:52 ` [RFC PATCH 3/4] mm/hotplug: make __add_pages() iterate on memory_block and split __add_section() Wei Yang
2017-06-26 7:50 ` John Hubbard
2017-06-26 23:53 ` Wei Yang
2017-06-27 6:47 ` John Hubbard
2017-06-28 0:16 ` Wei Yang
2017-06-28 0:22 ` Wei Yang
2017-06-25 2:52 ` [RFC PATCH 4/4] base/memory: pass start_section_nr to init_memory_block() Wei Yang
2017-06-27 7:11 ` John Hubbard
2017-06-28 0:18 ` Wei Yang
2017-06-26 7:46 ` [RFC PATCH 0/4] mm/hotplug: make hotplug memory_block alligned Michal Hocko
2017-06-27 2:13 ` Wei Yang
2017-06-28 9:43 ` Michal Hocko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170625025227.45665-3-richard.weiyang@gmail.com \
--to=richard.weiyang@gmail.com \
--cc=linux-mm@kvack.org \
--cc=mhocko@suse.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).