#include <sys/cdefs.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/racct.h>
#include <sys/resourcevar.h>
#include <sys/rwlock.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 ("$FreeBSD$")

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

static void	cluster_init (void *)

static struct cluster_save *	cluster_collectbufs (struct vnode vp, struct vn_clusterw vnc, 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")

	SYSINIT (cluster, SI_SUB_CPU, SI_ORDER_ANY, cluster_init, NULL)

int	cluster_read (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 vn_clusterw vnc, 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 gbflags)

void	cluster_init_vn (struct vn_clusterw *vnc)

Variables
static uma_zone_t	cluster_pbuf_zone

static int	write_behind = 1

static int	read_max = 64

static int	read_min = 1

Function Documentation

◆ __FBSDID()

__FBSDID ( "$FreeBSD$" )

◆ cluster_callback()

static void cluster_callback ( struct buf * bp )

static

Definition at line 558 of file vfs_cluster.c.

References buf, bufdone(), and cluster_pbuf_zone.

Referenced by cluster_rbuild(), and cluster_wbuild().

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◆ cluster_collectbufs()

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

static

Definition at line 1048 of file vfs_cluster.c.

References brelse(), buf, free(), and malloc().

Referenced by cluster_write().

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◆ cluster_init()

static void cluster_init ( void * dummy )

static

Definition at line 83 of file vfs_cluster.c.

References cluster_pbuf_zone, and nswbuf.

◆ cluster_init_vn()

void cluster_init_vn ( struct vn_clusterw * vnc )

Definition at line 1087 of file vfs_cluster.c.

◆ cluster_rbuild()

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 343 of file vfs_cluster.c.

References bqrelse(), buf, cluster_callback(), cluster_pbuf_zone, getblk(), panic(), printf(), unmapped_buf, and vfs_busy_pages_acquire().

Referenced by cluster_read().

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◆ cluster_read()

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