#include <sys/cdefs.h>
#include "opt_debug_cluster.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/bio.h>
#include <sys/buf.h>
#include <sys/vnode.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/resourcevar.h>
#include <sys/vmmeter.h>
#include <vm/vm.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <sys/sysctl.h>

Include dependency graph for vfs_cluster.c:

Functions
	__FBSDID ("$BSDSUniX$")

static	MALLOC_DEFINE (M_SEGMENT,"cl_savebuf","cluster_save buffer")

static struct cluster_save *	cluster_collectbufs (struct vnode vp, struct buf last_bp, int gbflags)

static struct buf *	cluster_rbuild (struct vnode vp, u_quad_t filesize, daddr_t lbn, daddr_t blkno, long size, int run, int gbflags, struct buf fbp)

static void	cluster_callback (struct buf *)

	SYSCTL_INT (_vfs, OID_AUTO, write_behind, CTLFLAG_RW,&write_behind, 0,"Cluster write-behind; 0: disable, 1: enable, 2: backed off")

	SYSCTL_INT (_vfs, OID_AUTO, read_max, CTLFLAG_RW,&read_max, 0,"Cluster read-ahead max block count")

	SYSCTL_INT (_vfs, OID_AUTO, read_min, CTLFLAG_RW,&read_min, 0,"Cluster read min block count")

int	cluster_read (struct vnode vp, u_quad_t filesize, daddr_t lblkno, long size, struct ucred cred, long totread, int seqcount, struct buf **bpp)

int	cluster_read_gb (struct vnode vp, u_quad_t filesize, daddr_t lblkno, long size, struct ucred cred, long totread, int seqcount, int gbflags, struct buf **bpp)

static __inline int	cluster_wbuild_wb (struct vnode *vp, long size, daddr_t start_lbn, int len, int gbflags)

void	cluster_write (struct vnode vp, struct buf bp, u_quad_t filesize, int seqcount)

void	cluster_write_gb (struct vnode vp, struct buf bp, u_quad_t filesize, int seqcount, int gbflags)

int	cluster_wbuild (struct vnode *vp, long size, daddr_t start_lbn, int len)

int	cluster_wbuild_gb (struct vnode *vp, long size, daddr_t start_lbn, int len, int gbflags)

Variables
static int	write_behind = 1

static int	read_max = 64

static int	read_min = 1

vm_page_t	bogus_page

Function Documentation

__FBSDID ( "$BSDSUniX$" )

static void cluster_callback ( struct buf * bp )

static

Definition at line 533 of file vfs_cluster.c.

References buf, and bufdone().

Referenced by cluster_rbuild(), and cluster_wbuild_gb().

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static struct cluster_save * cluster_collectbufs	(	struct vnode *	vp,
		struct buf *	last_bp,
		int	gbflags
	)

static

Definition at line 1040 of file vfs_cluster.c.

References bread_gb(), buf, and malloc().

Referenced by cluster_write_gb().

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static struct buf * cluster_rbuild	(	struct vnode *	vp,
		u_quad_t	filesize,
		daddr_t	lbn,
		daddr_t	blkno,
		long	size,
		int	run,
		int	gbflags,
		struct buf *	fbp
	)

static

Definition at line 318 of file vfs_cluster.c.

References bogus_page, bqrelse(), brelse(), buf, cluster_callback(), getblk(), panic(), printf(), and unmapped_buf.

Referenced by cluster_read_gb().

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int cluster_read	(	struct vnode *	vp,
		u_quad_t	filesize,
		daddr_t	lblkno,
		long	size,
		struct ucred *	cred,
		long	totread,
		int	seqcount,
		struct buf **	bpp
	)

Definition at line 90 of file vfs_cluster.c.

References cluster_read_gb().

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int cluster_read_gb	(	struct vnode *	vp,
		u_quad_t	filesize,
		daddr_t	lblkno,
		long	size,
		struct ucred *	cred,
		long	totread,
		int	seqcount,
		int	gbflags,
		struct buf **	bpp
	)