find_lock_entry (9) Linux Manual Page
find_lock_entry – locate, pin and lock a page cache entry
Synopsis
struct page *find_lock_entry(struct address_space *mapping, pgoff_t offset);Arguments
mapping
-
- the address_space to search
offset
- the page cache 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, or a swap entry from shmem/tmpfs, it is returned.
Otherwise, NULL is returned.
find_lock_entry may sleep.