xv6/bio.c File Reference

#include "types.h"
#include "defs.h"
#include "param.h"
#include "spinlock.h"
#include "buf.h"

Go to the source code of this file.

Functions
void	binit (void)
static struct buf *	bget (uint dev, uint sector)
struct buf *	bread (uint dev, uint sector)
void	bwrite (struct buf *b)
void	brelse (struct buf *b)
Variables
struct {
struct spinlock   lock
struct buf   buf [NBUF]
struct buf   head
}	bcache

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Function Documentation

static struct buf* bget	(	uint	dev,
		uint	sector
	)			[static, read]

Definition at line 62 of file bio.c.

References acquire(), B_BUSY, bcache, buf::dev, buf::flags, buf::next, panic(), buf::prev, release(), buf::sector, and sleep().

Referenced by bread().

void binit

(

void

)

Definition at line 40 of file bio.c.

References bcache, buf::dev, initlock(), NBUF, buf::next, and buf::prev.

Referenced by mpmain().

struct buf* bread	(	uint	dev,
		uint	sector
	)			[read]

Definition at line 97 of file bio.c.

References B_VALID, bget(), buf::flags, and iderw().

Referenced by balloc(), bfree(), bmap(), bzero(), dirlookup(), ialloc(), ilock(), itrunc(), iupdate(), readi(), readsb(), and writei().

void brelse

(

struct buf *

b

)

Definition at line 119 of file bio.c.

References acquire(), B_BUSY, bcache, buf::flags, buf::next, panic(), buf::prev, release(), and wakeup().

Referenced by balloc(), bfree(), bmap(), bzero(), dirlookup(), ialloc(), ilock(), itrunc(), iupdate(), readi(), readsb(), and writei().

void bwrite

(

struct buf *

b

)

Definition at line 109 of file bio.c.

References B_BUSY, B_DIRTY, buf::flags, iderw(), and panic().

Referenced by balloc(), bfree(), bmap(), bzero(), ialloc(), iupdate(), and writei().

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Variable Documentation

struct { ... } bcache

Referenced by bget(), binit(), and brelse().

struct buf buf[NBUF]

Definition at line 32 of file bio.c.

struct buf head

Definition at line 36 of file bio.c.

struct spinlock lock

Definition at line 31 of file bio.c.