Understanding the Linux® Virtual Memory Manager

Appendix K. Swap Management

Contents

K.1 Scanning for Free Entries	585
K.1.1 Function: get_swap_page()	585
K.1.2 Function: scan_swap_map()	587
K.2 Swap Cache	590
K.2.1 Adding Pages to the Swap Cache	590
K.2.1.1 Function: add_to_swap_cache()	590
K.2.1.2 Function: swap_duplicate()	591
K.2.2 Deleting Pages From the Swap Cache	592
K.2.2.1 Function: swap_free()	592
K.2.2.2 Function: swap_entry_free()	593
K.2.3 Acquiring/Releasing Swap Cache Pages	594
K.2.3.1 Function: swap_info_get()	594
K.2.3.2 Function: swap_info_put()	595
K.2.4 Searching the Swap Cache	596
K.2.4.1 Function: lookup_swap_cache()	596
K.3 Swap Area I/O	597
K.3.1 Reading Backing Storage	597
K.3.1.1 Function: read_swap_cache_async()	597
K.3.2 Writing Backing Storage	599
K.3.2.1 Function: swap_writepage()	599
K.3.2.2 Function: ...