bio.inc

Buffer cache

Summary

bio.inc	Buffer cache
Structs
Buffer
Constants
Buffer flags
Functions
bio_init
bio_getblk
bio_read
bio_bwrite
bio_brelse	Unbusy a buffer and release it to the free lists.

Structs

Buffer

.dev	Device id
.block	Block number
.ulock	lock
.refcount	refcount
.data	block data

Constants

Buffer flags

BUFFER_WRITE	XXX
BUFFER_READ	XXX
BUFFER_ERROR	XXX
BUFFER_DIRTY	XXX
BUFFER_INVAL	mark buffer as invalid

Functions

bio_init

bio_getblk

bio_read

In

EAX	devid (AH major, AL minor)
ECX	block

bio_bwrite

bio_brelse

Unbusy a buffer and release it to the free lists.