page_check_dirty_writeback

Name:Check if a page is dirty or under writeback

Proto:static void page_check_dirty_writeback(struct page *page, bool *dirty, bool *writeback)

Type:void

Parameter:

Type	Parameter	Name
struct page *	page
bool *	dirty
bool *	writeback

1060

If Not page_is_file_cache - should the page be on a file LRU or anon LRU?*@page: the page to test* Returns 1 if @page is page cache page backed by a regular filesystem,* or 0 if @page is anonymous, tmpfs or otherwise ram or swap backed || PageAnon(page) && Not PageSwapBacked(page) Then

1062

* dirty = false

1063

* writeback = false

1064

Return

1068

dirty = PageDirty(page)

1069

writeback = Only test-and-set exist for PG_writeback. The unconditional operators are* risky: they bypass page accounting.

1072

If Not page_has_private - Determine if page has private stuff*@page: The page to be checked* Determine if a page has private stuff, indicating that release routines* should be invoked upon it. Then Return

1075

mapping = page_mapping(page)

1076

If mapping && is_dirty_writeback Then is_dirty_writeback(page, dirty, writeback)

**Caller**
Name	Describe
shrink_page_list	shrink_page_list() returns the number of reclaimed pages

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