1. NAME▲
add_to_page_cache_locked - add a locked page to the pagecache
2. SYNOPSIS ▲
int add_to_page_cache_locked(struct page * page , struct address_space * mapping , pgoff_t offset , gfp_t gfp_mask );
3. ARGUMENTS ▲
page
    page to add
mapping
    the pageAqs address_space
offset
    page index
gfp_mask
    page allocation mode
4. DESCRIPTION ▲
This function is used to add a page to the pagecache. It must be locked. This function does not add the page to the LRU. The caller must do that.
5. COPYRIGHT ▲