centos man page for __find_lock_page

__FIND_LOCK_PAGE(9)					    Memory Management in Linux					       __FIND_LOCK_PAGE(9)

NAME
       __find_lock_page - locate, pin and lock a pagecache page

SYNOPSIS
       struct page * __find_lock_page(struct address_space * mapping, pgoff_t offset);

ARGUMENTS
       mapping
	   the address_space to search

       offset
	   the page index

DESCRIPTION
       Looks up the page cache slot at mapping & offset. If there is a page cache page, it is returned locked and with an increased refcount.

       If the slot holds a shadow entry of a previously evicted page, it is returned.

       Otherwise, NULL is returned.

       __find_lock_page may sleep.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						       __FIND_LOCK_PAGE(9)