add_to_page_cache_lru

Name:add_to_page_cache_lru

Proto:int add_to_page_cache_lru(struct page *page, struct address_space *mapping, unsigned long offset, gfp_t gfp_mask)

Type:int

Parameter:

Type	Parameter	Name
struct page *	page
struct address_space *	mapping
unsigned long	offset
gfp_t	gfp_mask

939

void * shadow = NULL

942

__SetPageLocked(page)

943

ret = __add_to_page_cache_locked(page, mapping, offset, gfp_mask, & shadow)

945

If Value for the false possibility is greater at compile time(ret) Then __ClearPageLocked(page)

947

Else

956

WARN_ON_ONCE(PageActive(page))

957

If Not (gfp_mask & __GFP_WRITE) && shadow Then workingset_refault(page, shadow)

959

linux/mm/swap.c

961

Return ret

**Caller**
Name	Describe
pagecache_get_page	pagecache_get_page - find and get a page reference@mapping: the address_space to search@offset: the page index@fgp_flags: PCG flags@gfp_mask: gfp mask to use for the page cache data page allocation* Looks up the page cache slot at @mapping & @offset.
generic_file_buffered_read	generic_file_buffered_read - generic file read routine@iocb: the iocb to read@iter: data destination@written: already copied This is a generic file read routine, and uses the* mapping->a_ops->readpage() function for the actual low-level stuff.
do_read_cache_page
read_cache_pages	ad_cache_pages - populate an address space with some pages & start reads against them@mapping: the address_space@pages: The address of a list_head which contains the target pages. These* pages have their ->index populated and are otherwise uninitialised.
read_pages
iomap_next_page
ramfs_nommu_expand_for_mapping	add a contiguous set of pages into a ramfs inode when it's truncated from* size 0 on the assumption that it's going to be used for an mmap of shared* memory

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