struct page * find_lock_page (struct address_space * mapping, unsigned long offset);
Locates the desired pagecache page, locks it, increments its reference count and returns its address.
Returns zero if the page was not present. find_lock_page may sleep.
Locates the desired pagecache page, locks it, increments its reference count and returns its address.
Returns zero if the page was not present. find_lock_page may sleep.