page_index

Name:Return the pagecache index of the passed page. Regular pagecache pages* use ->index whereas swapcache pages use swp_offset(->private)

Proto:static inline unsigned long page_index(struct page *page)

Type:unsigned long

Parameter:

Type	Parameter	Name
struct page *	page

1355

If Value for the false possibility is greater at compile time(PageSwapCache(page)) Then Return __page_file_index(page)

1357

Return Our offset within mapping.

**Caller**
Name	Describe
__set_page_dirty_nobuffers	For address_spaces which do not use buffers. Just tag the page as dirty in* the xarray.* This is also used when a single buffer is being dirtied: we want to set the* page dirty in that case, but not all the buffers. This is a "bottom-up"
test_clear_page_writeback
__test_set_page_writeback
__basepage_index
migrate_page_move_mapping	Replace the page in the mapping.* The number of remaining references must be:* 1 for anonymous pages without a mapping* 2 for pages with a mapping* 3 for pages with a mapping and PagePrivate/PagePrivate2 set.
migrate_huge_page_move_mapping	The expected number of remaining references is the same as that* of migrate_page_move_mapping().
split_huge_page_to_list	This function splits huge page into normal pages. @page can point to any* subpage of huge page to split. Split doesn't change the position of @page.* Only caller must hold pin on the @page, otherwise split fails with -EBUSY.* The huge page must be locked.
__set_page_dirty	Mark the page dirty, and set it dirty in the page cache, and mark the inode* dirty.* If warn is true, then emit a warning if the page is not uptodate and has* not been truncated.* The caller must hold lock_page_memcg().

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