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memory hotplug: use macro to switch between section and pfn

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Use macro section_nr_to_pfn() to switch between section and pfn, instead
of open-coding it.  No semantic changes.

Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Sheng Yong 2015-04-14 15:44:54 -07:00 committed by Linus Torvalds
parent 1575e68b3c
commit 19c07d5e04
2 changed files with 2 additions and 2 deletions
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2
drivers/base/memory.c
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@ -228,7 +228,7 @@ memory_block_action(unsigned long phys_index, unsigned long action, int online_t
struct page *first_page;
int ret;
start_pfn = phys_index << PFN_SECTION_SHIFT;
start_pfn = section_nr_to_pfn(phys_index);
first_page = pfn_to_page(start_pfn);
switch (action) {

2
mm/memory_hotplug.c
View File

@ -502,7 +502,7 @@ int __ref __add_pages(int nid, struct zone *zone, unsigned long phys_start_pfn,
end_sec = pfn_to_section_nr(phys_start_pfn + nr_pages - 1);
for (i = start_sec; i <= end_sec; i++) {
err = __add_section(nid, zone, i << PFN_SECTION_SHIFT);
err = __add_section(nid, zone, section_nr_to_pfn(i));
/*
* EEXIST is finally dealt with by ioresource collision