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ANDROID: mm: page_pinner: record every put_page

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There are some places using put_page_testzero instead of put_page.
Thus, move page_pinner_put_page into put_page_testzero to catch
all of put operations.

Bug: 192475091
Signed-off-by: Minchan Kim <minchan@google.com>
Change-Id: If33b2a28ceb64e3ccab83990eac2c1cc291c3b08
This commit is contained in:
Minchan Kim 2021-07-08 11:12:29 -07:00
parent 9f47e5fdda
commit 470cce5085
1 changed files with 6 additions and 3 deletions
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9
include/linux/mm.h
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@ -756,8 +756,13 @@ struct inode;
*/
static inline int put_page_testzero(struct page *page)
{
int ret;
VM_BUG_ON_PAGE(page_ref_count(page) == 0, page);
return page_ref_dec_and_test(page);
ret = page_ref_dec_and_test(page);
page_pinner_put_page(page);
return ret;
}
/*
@ -1233,8 +1238,6 @@ static inline void put_page(struct page *page)
{
page = compound_head(page);
page_pinner_put_page(page);
/*
* For devmap managed pages we need to catch refcount transition from
* 2 to 1, when refcount reach one it means the page is free and we