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mm: remove put_page_unless_one() 

It has no callers.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Vineet Gupta 2015-09-08 14:59:56 -07:00 committed by Linus Torvalds
parent 4fcab5f437
commit b5e3aa0a4d
1 changed files with 0 additions and 12 deletions
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12
include/linux/mm.h
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@ -361,18 +361,6 @@ static inline int get_page_unless_zero(struct page *page)
return atomic_inc_not_zero(&page->_count); return atomic_inc_not_zero(&page->_count);
} }
/*
* Try to drop a ref unless the page has a refcount of one, return false if
* that is the case.
* This is to make sure that the refcount won't become zero after this drop.
* This can be called when MMU is off so it must not access
* any of the virtual mappings.
*/
static inline int put_page_unless_one(struct page *page)
{
return atomic_add_unless(&page->_count, -1, 1);
}
extern int page_is_ram(unsigned long pfn); extern int page_is_ram(unsigned long pfn);
extern int region_is_ram(resource_size_t phys_addr, unsigned long size); extern int region_is_ram(resource_size_t phys_addr, unsigned long size);