Commit 71fbd556 authored by Zhang Zhen's avatar Zhang Zhen Committed by Linus Torvalds
Browse files

memory-hotplug: remove redundant call of page_to_pfn



This is just a small optimization.  The start_pfn can be obtained directly
by phys_index << PFN_SECTION_SHIFT.  So the call of page_to_pfn() is
redundant and remove it.
Signed-off-by: default avatarZhang Zhen <zhenzhang.zhang@huawei.com>
Acked-by: default avatarYasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: default avatarDavid Rientjes <rientjes@google.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: Wang Nan <wangnan0@huawei.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 9dc00f4c
......@@ -228,8 +228,8 @@ memory_block_action(unsigned long phys_index, unsigned long action, int online_t
struct page *first_page;
int ret;
first_page = pfn_to_page(phys_index << PFN_SECTION_SHIFT);
start_pfn = page_to_pfn(first_page);
start_pfn = phys_index << PFN_SECTION_SHIFT;
first_page = pfn_to_page(start_pfn);
switch (action) {
case MEM_ONLINE:
......
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