Understanding the Linux® Virtual Memory Manager

Appendix I. High Memory Management

Contents

I.1 Mapping High Memory Pages	514
I.1.1 Function: kmap()	514
I.1.2 Function: kmap_nonblock()	514
I.1.3 Function: __kmap()	514
I.1.4 Function: kmap_high()	515
I.1.5 Function: map_new_virtual()	515
I.1.6 Function: flush_all_zero_pkmaps()	518
I.2 Mapping High Memory Pages Atomically	519
I.2.1 Function: kmap_atomic()	519
I.3 Unmapping Pages	521
I.3.1 Function: kunmap()	521
I.3.2 Function: kunmap_high()	521
I.4 Unmapping High Memory Pages Atomically	523
I.4.1 Function: kunmap_atomic()	523
I.5 Bounce Buffers	524
I.5.1 Creating Bounce Buffers	524
I.5.1.1 Function: create_bounce()	524
I.5.1.2 Function: alloc_bounce_bh()	526
I.5.1.3 Function: alloc_bounce_page()	527
I.5.2 Copying Using Bounce Buffers	528
I.5.2.1 Function: bounce_end_io_write()	528
I.5.2.2 ...