__get_any

Name:Safely get reference count of an arbitrary page.* Returns 0 for a free page, -EIO for a zero refcount page* that is not free, and 1 for any other page type.* For 1 the page is returned with increased page count, otherwise not.

Proto:static int __get_any_page(struct page *p, unsigned long pfn, int flags)

Type:int

Parameter:

Type	Parameter	Name
struct page *	p
unsigned long	pfn
int	flags

1616

If flags & MF_COUNT_INCREASED Then Return 1

1623

If Not get_hwpoison_page() - Get refcount for memory error handling:*@page: raw error page (hit by memory error)* Return: return 0 if failed to grab the refcount, otherwise true (some* non-zero value.) Then

1624

If PageHuge() only returns true for hugetlbfs pages, but not for normal or* transparent huge pages. See the PageTransHuge() documentation for more* details. Then

1625

pr_info("%s: %#lx free huge page\n", __func__, pfn)

1626

ret = 0

1627

Else if is_free_buddy_page(p) Then

1628

pr_info("%s: %#lx free buddy page\n", __func__, pfn)

1629

ret = 0

1630

Else

1631

pr_info("%s: %#lx: unknown zero refcount page type %lx\n", __func__, pfn, Atomic flags, some possibly * updated asynchronously )

1633

ret = -EIO

1635

Else

1637

ret = 1

1639

Return ret

**Caller**
Name	Describe
get_any_page

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion

Function report