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mm/memory-failure: add macro GET_PAGE_MAX_RETRY_NUM

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Add helper macro GET_PAGE_MAX_RETRY_NUM to replace magic number 3.  No
functional change intended.

Link: https://lkml.kernel.org/r/20240612071835.157004-4-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: kernel test robot <lkp@intel.com>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2024-06-12 15:18:25 +08:00 committed by Andrew Morton
parent ceb32d6aa9
commit babde18650
1 changed files with 5 additions and 3 deletions
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8
mm/memory-failure.c
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@ -1417,6 +1417,8 @@ static int __get_hwpoison_page(struct page *page, unsigned long flags)
return 0;
}
#define GET_PAGE_MAX_RETRY_NUM 3
static int get_any_page(struct page *p, unsigned long flags)
{
int ret = 0, pass = 0;
@ -1431,12 +1433,12 @@ static int get_any_page(struct page *p, unsigned long flags)
if (!ret) {
if (page_count(p)) {
/* We raced with an allocation, retry. */
if (pass++ < 3)
if (pass++ < GET_PAGE_MAX_RETRY_NUM)
goto try_again;
ret = -EBUSY;
} else if (!PageHuge(p) && !is_free_buddy_page(p)) {
/* We raced with put_page, retry. */
if (pass++ < 3)
if (pass++ < GET_PAGE_MAX_RETRY_NUM)
goto try_again;
ret = -EIO;
}
@ -1462,7 +1464,7 @@ static int get_any_page(struct page *p, unsigned long flags)
* A page we cannot handle. Check whether we can turn
* it into something we can handle.
*/
if (pass++ < 3) {
if (pass++ < GET_PAGE_MAX_RETRY_NUM) {
put_page(p);
shake_page(p);
count_increased = false;