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[PATCH] remove set_page_count() outside mm/

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set_page_count usage outside mm/ is limited to setting the refcount to 1.
Remove set_page_count from outside mm/, and replace those users with
init_page_count() and set_page_refcounted().

This allows more debug checking, and tighter control on how code is allowed
to play around with page->_count.

Signed-off-by: Nick Piggin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Nick Piggin 2006-03-22 00:08:40 -08:00 • committed by Linus Torvalds
commit 7835e98b2e
40 changed files with 96 additions and 79 deletions
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4
arch/h8300/mm/init.c
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@ -196,7 +196,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
int pages = 0;
for (; start < end; start += PAGE_SIZE) {
ClearPageReserved(virt_to_page(start));
set_page_count(virt_to_page(start), 1);
init_page_count(virt_to_page(start));
free_page(start);
totalram_pages++;
pages++;
@ -219,7 +219,7 @@ free_initmem()
/* next to check that the page we free is not a partial page */
for (; addr + PAGE_SIZE < (unsigned long)(&__init_end); addr +=PAGE_SIZE) {
ClearPageReserved(virt_to_page(addr));
set_page_count(virt_to_page(addr), 1);
init_page_count(virt_to_page(addr));
free_page(addr);
totalram_pages++;
}