vfs_subr.c File Reference

#include <sys/cdefs.h>
#include "opt_compat.h"
#include "opt_ddb.h"
#include "opt_watchdog.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bio.h>
#include <sys/buf.h>
#include <sys/condvar.h>
#include <sys/conf.h>
#include <sys/dirent.h>
#include <sys/event.h>
#include <sys/eventhandler.h>
#include <sys/extattr.h>
#include <sys/file.h>
#include <sys/fcntl.h>
#include <sys/jail.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/lockf.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/priv.h>
#include <sys/reboot.h>
#include <sys/sched.h>
#include <sys/sleepqueue.h>
#include <sys/smp.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include <sys/vmmeter.h>
#include <sys/vnode.h>
#include <sys/watchdog.h>
#include <machine/stdarg.h>
#include <security/mac/mac_framework.h>
#include <vm/vm.h>
#include <vm/vm_object.h>
#include <vm/vm_extern.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_page.h>
#include <vm/vm_kern.h>
#include <vm/uma.h>

Include dependency graph for vfs_subr.c:

Go to the source code of this file.

Macros
#define	WI_MPSAFEQ   0
#define	WI_GIANTQ   1
#define	SYNCER_MAXDELAY   32
#define	SYNCER_SHUTDOWN_SPEEDUP   4
#define	VCANRECYCLE(vp)   (((vp)->v_iflag & VI_FREE) && !(vp)->v_holdcnt)
#define	VSHOULDFREE(vp)   (!((vp)->v_iflag & VI_FREE) && !(vp)->v_holdcnt)
#define	VSHOULDBUSY(vp)   (((vp)->v_iflag & VI_FREE) && (vp)->v_holdcnt)
#define	MAXVNODES_MAX   (512 * (1024 * 1024 * 1024 / (int)PAGE_SIZE / 16))
#define	FSID_CACHE_SIZE   256
#define	VPUTX_VRELE   1
#define	VPUTX_VPUT   2
#define	VPUTX_VUNREF   3
#define	KINFO_VNODESLOP   10
#define	sync_close   ((int (*)(struct vop_close_args *))nullop)
#define	ALWAYS_YIELD   1

Enumerations
enum	{ TSP_SEC, TSP_HZ, TSP_USEC, TSP_NSEC }

Functions
	__FBSDID ("$BSDSUniX$")
static void	delmntque (struct vnode *vp)
static int	flushbuflist (struct bufv *bufv, int flags, struct bufobj *bo, int slpflag, int slptimeo)
static void	syncer_shutdown (void *arg, int howto)
static int	vtryrecycle (struct vnode *vp)
static void	v_incr_usecount (struct vnode *)
static void	v_decr_usecount (struct vnode *)
static void	v_decr_useonly (struct vnode *)
static void	v_upgrade_usecount (struct vnode *)
static void	vnlru_free (int)
static void	vgonel (struct vnode *)
static void	vfs_knllock (void *arg)
static void	vfs_knlunlock (void *arg)
static void	vfs_knl_assert_locked (void *arg)
static void	vfs_knl_assert_unlocked (void *arg)
static void	destroy_vpollinfo (struct vpollinfo *vi)
	SYSCTL_ULONG (_vfs, OID_AUTO, numvnodes, CTLFLAG_RD,&numvnodes, 0,"Number of vnodes in existence")
	SYSCTL_ULONG (_vfs, OID_AUTO, vnodes_created, CTLFLAG_RD,&vnodes_created, 0,"Number of vnodes created by getnewvnode")
static	TAILQ_HEAD (freelst, vnode)
	SYSCTL_INT (_kern, KERN_MAXVNODES, maxvnodes, CTLFLAG_RW,&desiredvnodes, 0,"Maximum number of vnodes")
	SYSCTL_ULONG (_kern, OID_AUTO, minvnodes, CTLFLAG_RW,&wantfreevnodes, 0,"Minimum number of vnodes (legacy)")
	SYSCTL_INT (_debug, OID_AUTO, vnlru_nowhere, CTLFLAG_RW,&vnlru_nowhere, 0,"Number of times the vnlru process ran without success")
static void	vntblinit (void *dummy __unused)
	SYSINIT (vfs, SI_SUB_VFS, SI_ORDER_FIRST, vntblinit, NULL)
int	vfs_busy (struct mount *mp, int flags)
void	vfs_unbusy (struct mount *mp)
struct mount *	vfs_getvfs (fsid_t *fsid)
struct mount *	vfs_busyfs (fsid_t *fsid)
int	vfs_suser (struct mount *mp, struct thread *td)
void	vfs_getnewfsid (struct mount *mp)
	SYSCTL_INT (_vfs, OID_AUTO, timestamp_precision, CTLFLAG_RW,&timestamp_precision, 0,"File timestamp precision (0: seconds, ""1: sec + ns accurate to 1/HZ, 2: sec + ns truncated to ms, ""3+: sec + ns (max. precision))")
void	vfs_timestamp (struct timespec *tsp)
void	vattr_null (struct vattr *vap)
static int	vlrureclaim (struct mount *mp)
static void	vnlru_proc (void)
	SYSINIT (vnlru, SI_SUB_KTHREAD_UPDATE, SI_ORDER_FIRST, kproc_start,&vnlru_kp)
static int	getnewvnode_wait (int suspended)
void	getnewvnode_reserve (u_int count)
void	getnewvnode_drop_reserve (void)
int	getnewvnode (const char *tag, struct mount *mp, struct vop_vector *vops, struct vnode **vpp)
static void	insmntque_stddtr (struct vnode *vp, void *dtr_arg)
int	insmntque1 (struct vnode *vp, struct mount *mp, void(*dtr)(struct vnode *, void *), void *dtr_arg)
int	insmntque (struct vnode *vp, struct mount *mp)
int	bufobj_invalbuf (struct bufobj *bo, int flags, int slpflag, int slptimeo)
int	vinvalbuf (struct vnode *vp, int flags, int slpflag, int slptimeo)
int	vtruncbuf (struct vnode *vp, struct ucred *cred, struct thread *td, off_t length, int blksize)
static struct buf *	buf_splay (daddr_t lblkno, b_xflags_t xflags, struct buf *root)
static void	buf_vlist_remove (struct buf *bp)
static void	buf_vlist_add (struct buf *bp, struct bufobj *bo, b_xflags_t xflags)
struct buf *	gbincore (struct bufobj *bo, daddr_t lblkno)
void	bgetvp (struct vnode *vp, struct buf *bp)
void	brelvp (struct buf *bp)
static void	vn_syncer_add_to_worklist (struct bufobj *bo, int delay)
static int	sysctl_vfs_worklist_len (SYSCTL_HANDLER_ARGS)
	SYSCTL_PROC (_vfs, OID_AUTO, worklist_len, CTLTYPE_INT|CTLFLAG_RD, NULL, 0, sysctl_vfs_worklist_len,"I","Syncer thread worklist length")
static void	sched_sync (void)
	SYSINIT (syncer, SI_SUB_KTHREAD_UPDATE, SI_ORDER_FIRST, kproc_start,&up_kp)
static int	sync_vnode (struct synclist *slp, struct bufobj **bo, struct thread *td)
int	speedup_syncer (void)
void	reassignbuf (struct buf *bp)
int	vget (struct vnode *vp, int flags, struct thread *td)
void	vref (struct vnode *vp)
int	vrefcnt (struct vnode *vp)
static void	vputx (struct vnode *vp, int func)
void	vrele (struct vnode *vp)
void	vput (struct vnode *vp)
void	vunref (struct vnode *vp)
void	vhold (struct vnode *vp)
void	vholdl (struct vnode *vp)
void	vdrop (struct vnode *vp)
void	vdropl (struct vnode *vp)
void	vinactive (struct vnode *vp, struct thread *td)
int	vflush (struct mount *mp, int rootrefs, int flags, struct thread *td)
int	vrecycle (struct vnode *vp, struct thread *td)
void	vgone (struct vnode *vp)
static void	notify_lowervp_vfs_dummy (struct mount *mp __unused, struct vnode *lowervp __unused)
void	vfs_notify_upper (struct vnode *vp, int event)
int	vcount (struct vnode *vp)
int	count_dev (struct cdev *dev)
void	vn_printf (struct vnode *vp, const char *fmt,...)
static int	vfsconf2x (struct sysctl_req *req, struct vfsconf *vfsp)
static int	sysctl_vfs_conflist (SYSCTL_HANDLER_ARGS)
	SYSCTL_PROC (_vfs, OID_AUTO, conflist, CTLTYPE_OPAQUE|CTLFLAG_RD, NULL, 0, sysctl_vfs_conflist,"S,xvfsconf","List of all configured filesystems")
static int	sysctl_ovfs_conf (SYSCTL_HANDLER_ARGS)
static int	vfs_sysctl (SYSCTL_HANDLER_ARGS)
static	SYSCTL_NODE (_vfs, VFS_GENERIC, generic, CTLFLAG_RD|CTLFLAG_SKIP, vfs_sysctl,"Generic filesystem")
void	vfs_unmountall (void)
void	vfs_msync (struct mount *mp, int flags)
static void	destroy_vpollinfo_free (struct vpollinfo *vi)
void	v_addpollinfo (struct vnode *vp)
int	vn_pollrecord (struct vnode *vp, struct thread *td, int events)
static int	sync_fsync (struct vop_fsync_args *)
static int	sync_inactive (struct vop_inactive_args *)
static int	sync_reclaim (struct vop_reclaim_args *)
void	vfs_allocate_syncvnode (struct mount *mp)
void	vfs_deallocate_syncvnode (struct mount *mp)
int	vn_isdisk (struct vnode *vp, int *errp)
int	vaccess (enum vtype type, mode_t file_mode, uid_t file_uid, gid_t file_gid, accmode_t accmode, struct ucred *cred, int *privused)
int	extattr_check_cred (struct vnode *vp, int attrnamespace, struct ucred *cred, struct thread *td, accmode_t accmode)
void	vop_rename_fail (struct vop_rename_args *ap)
void	vop_rename_pre (void *ap)
void	vop_strategy_pre (void *ap)
void	vop_lock_pre (void *ap)
void	vop_lock_post (void *ap, int rc)
void	vop_unlock_pre (void *ap)
void	vop_unlock_post (void *ap, int rc)
void	vop_create_post (void *ap, int rc)
void	vop_deleteextattr_post (void *ap, int rc)
void	vop_link_post (void *ap, int rc)
void	vop_mkdir_post (void *ap, int rc)
void	vop_mknod_post (void *ap, int rc)
void	vop_remove_post (void *ap, int rc)
void	vop_rename_post (void *ap, int rc)
void	vop_rmdir_post (void *ap, int rc)
void	vop_setattr_post (void *ap, int rc)
void	vop_setextattr_post (void *ap, int rc)
void	vop_symlink_post (void *ap, int rc)
static void	vfs_event_init (void *arg)
	SYSINIT (vfs_knlist, SI_SUB_VFS, SI_ORDER_ANY, vfs_event_init, NULL)
void	vfs_event_signal (fsid_t *fsid, uint32_t event, intptr_t data __unused)
static int	filt_fsattach (struct knote *kn)
static void	filt_fsdetach (struct knote *kn)
static int	filt_fsevent (struct knote *kn, long hint)
static int	sysctl_vfs_ctl (SYSCTL_HANDLER_ARGS)
	SYSCTL_PROC (_vfs, OID_AUTO, ctl, CTLTYPE_OPAQUE|CTLFLAG_WR, NULL, 0, sysctl_vfs_ctl,"","Sysctl by fsid")
u_quad_t	init_va_filerev (void)
static int	filt_vfsread (struct knote *kn, long hint)
static int	filt_vfswrite (struct knote *kn, long hint)
static int	filt_vfsvnode (struct knote *kn, long hint)
static void	filt_vfsdetach (struct knote *kn)
int	vfs_kqfilter (struct vop_kqfilter_args *ap)
int	vfs_read_dirent (struct vop_readdir_args *ap, struct dirent *dp, off_t off)
void	vfs_mark_atime (struct vnode *vp, struct ucred *cred)
int	vfs_unixify_accmode (accmode_t *accmode)
	MALLOC_DEFINE (M_VNODE_MARKER,"vnodemarker","vnode marker")
struct vnode *	__mnt_vnode_next_all (struct vnode **mvp, struct mount *mp)
struct vnode *	__mnt_vnode_first_all (struct vnode **mvp, struct mount *mp)
void	__mnt_vnode_markerfree_all (struct vnode **mvp, struct mount *mp)
static void	mnt_vnode_markerfree_active (struct vnode **mvp, struct mount *mp)
static struct vnode *	mnt_vnode_next_active (struct vnode **mvp, struct mount *mp)
struct vnode *	__mnt_vnode_next_active (struct vnode **mvp, struct mount *mp)
struct vnode *	__mnt_vnode_first_active (struct vnode **mvp, struct mount *mp)
void	__mnt_vnode_markerfree_active (struct vnode **mvp, struct mount *mp)

Variables
static unsigned long	numvnodes
static u_long	vnodes_created
enum vtype	iftovt_tab [16]
int	vttoif_tab [10]
	syncer_state
int	desiredvnodes
static int	vnlru_nowhere
static int	vnsz2log
static int	timestamp_precision = TSP_USEC
static struct proc *	vnlruproc
static int	vnlruproc_sig
static struct kproc_desc	vnlru_kp
static struct proc *	updateproc
static struct kproc_desc	up_kp
static char *	typename []
static struct vop_vector	sync_vnodeops
static struct knlist	fs_knlist
struct filterops	fs_filtops
static struct filterops	vfsread_filtops
static struct filterops	vfswrite_filtops
static struct filterops	vfsvnode_filtops

Macro Definition Documentation

#define ALWAYS_YIELD   1

Definition at line 4866 of file vfs_subr.c.

Referenced by mnt_vnode_next_active().

#define FSID_CACHE_SIZE   256

Referenced by vfs_busyfs().

#define KINFO_VNODESLOP   10

Definition at line 3453 of file vfs_subr.c.

#define MAXVNODES_MAX   (512 * (1024 * 1024 * 1024 / (int)PAGE_SIZE / 16))

Definition at line 304 of file vfs_subr.c.

Referenced by vntblinit().

#define sync_close   ((int (*)(struct vop_close_args *))nullop)

Definition at line 3710 of file vfs_subr.c.

#define SYNCER_MAXDELAY   32

#define SYNCER_SHUTDOWN_SPEEDUP   4

Referenced by sched_sync().

#define VCANRECYCLE

(

vp

)

(((vp)->v_iflag & VI_FREE) && !(vp)->v_holdcnt)

Definition at line 289 of file vfs_subr.c.

Referenced by vnlru_free().

#define VPUTX_VPUT   2

Definition at line 2333 of file vfs_subr.c.

Referenced by vput(), and vputx().

#define VPUTX_VRELE   1

Definition at line 2332 of file vfs_subr.c.

Referenced by vputx(), and vrele().

#define VPUTX_VUNREF   3

Definition at line 2334 of file vfs_subr.c.

Referenced by vputx(), and vunref().

#define VSHOULDBUSY

(

vp

)

(((vp)->v_iflag & VI_FREE) && (vp)->v_holdcnt)

Definition at line 291 of file vfs_subr.c.

Referenced by vholdl().

#define VSHOULDFREE

(

vp

)

(!((vp)->v_iflag & VI_FREE) && !(vp)->v_holdcnt)

Definition at line 290 of file vfs_subr.c.

Referenced by vdropl().

#define WI_GIANTQ   1

Definition at line 98 of file vfs_subr.c.

Referenced by sched_sync(), vn_syncer_add_to_worklist(), and vntblinit().

#define WI_MPSAFEQ   0

Definition at line 97 of file vfs_subr.c.

Referenced by sched_sync(), vn_syncer_add_to_worklist(), and vntblinit().

Enumeration Type Documentation

anonymous enum

Enumerator
TSP_SEC
TSP_HZ
TSP_USEC
TSP_NSEC

Definition at line 623 of file vfs_subr.c.

Function Documentation

__FBSDID

(

"$BSDSUniX$"

)

struct vnode* __mnt_vnode_first_active	(	struct vnode **	mvp,
		struct mount *	mp
	)

Definition at line 4929 of file vfs_subr.c.

References malloc(), mnt_vnode_markerfree_active(), and mnt_vnode_next_active().

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struct vnode* __mnt_vnode_first_all	(	struct vnode **	mvp,
		struct mount *	mp
	)

Definition at line 4797 of file vfs_subr.c.

References free(), and malloc().

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void __mnt_vnode_markerfree_active	(	struct vnode **	mvp,
		struct mount *	mp
	)

Definition at line 4952 of file vfs_subr.c.

References mnt_vnode_markerfree_active().

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void __mnt_vnode_markerfree_all	(	struct vnode **	mvp,
		struct mount *	mp
	)

Definition at line 4828 of file vfs_subr.c.

References free().

Referenced by __mnt_vnode_next_all().

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struct vnode* __mnt_vnode_next_active	(	struct vnode **	mvp,
		struct mount *	mp
	)

Definition at line 4919 of file vfs_subr.c.

References kern_yield(), mnt_vnode_next_active(), and should_yield().

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struct vnode* __mnt_vnode_next_all	(	struct vnode **	mvp,
		struct mount *	mp
	)

Definition at line 4769 of file vfs_subr.c.

References __mnt_vnode_markerfree_all(), kern_yield(), and should_yield().

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void bgetvp	(	struct vnode *	vp,
		struct buf *	bp
	)

Definition at line 1733 of file vfs_subr.c.

References buf_vlist_add(), and vhold().

Referenced by getblk().

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void brelvp

(

struct buf *

bp

)

Definition at line 1760 of file vfs_subr.c.

References buf_vlist_remove(), panic(), and vdrop().

Referenced by brelse(), getnewbuf_reuse_bp(), and vfs_vmio_release().

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static struct buf* buf_splay ( daddr_t  lblkno, b_xflags_t  xflags, struct buf *  root  )

static

Definition at line 1564 of file vfs_subr.c.

References buf, and dummy.

Referenced by buf_vlist_add(), buf_vlist_remove(), and gbincore().

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static void buf_vlist_add ( struct buf *  bp, struct bufobj *  bo, b_xflags_t  xflags  )

static

Definition at line 1656 of file vfs_subr.c.

References buf, and buf_splay().

Referenced by bgetvp(), and reassignbuf().

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static void buf_vlist_remove ( struct buf *  bp )

static

Definition at line 1619 of file vfs_subr.c.

References buf, and buf_splay().

Referenced by brelvp(), and reassignbuf().

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int bufobj_invalbuf	(	struct bufobj *	bo,
		int	flags,
		int	slpflag,
		int	slptimeo
	)

Definition at line 1264 of file vfs_subr.c.

References bufobj_wwait(), flushbuflist(), and panic().

Referenced by vinvalbuf().

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int count_dev

(

struct cdev *

dev

)

Definition at line 2974 of file vfs_subr.c.

References count, and dev_unlock().

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static void delmntque ( struct vnode *  vp )

static

Definition at line 1148 of file vfs_subr.c.

Referenced by vgonel().

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static void destroy_vpollinfo ( struct vpollinfo *  vi )

static

Definition at line 3641 of file vfs_subr.c.

References destroy_vpollinfo_free(), and seldrain().

Referenced by vdropl().

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static void destroy_vpollinfo_free ( struct vpollinfo *  vi )

static

Definition at line 3632 of file vfs_subr.c.

References knlist_destroy(), and mtx_destroy().

Referenced by destroy_vpollinfo(), and v_addpollinfo().

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int extattr_check_cred	(	struct vnode *	vp,
		int	attrnamespace,
		struct ucred *	cred,
		struct thread *	td,
		accmode_t	accmode
	)

Definition at line 4031 of file vfs_subr.c.

References priv_check_cred().

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static int filt_fsattach ( struct knote *  kn )

static

Definition at line 4427 of file vfs_subr.c.

References fs_knlist, and knlist_add().

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static void filt_fsdetach ( struct knote *  kn )

static

Definition at line 4436 of file vfs_subr.c.

References fs_knlist, and knlist_remove().

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static int filt_fsevent ( struct knote *  kn, long  hint  )

static

Definition at line 4443 of file vfs_subr.c.

static void filt_vfsdetach ( struct knote *  kn )

static

Definition at line 4587 of file vfs_subr.c.

References knlist_remove(), and vdrop().

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static int filt_vfsread ( struct knote *  kn, long  hint  )

static

Definition at line 4598 of file vfs_subr.c.

static int filt_vfsvnode ( struct knote *  kn, long  hint  )

static

Definition at line 4646 of file vfs_subr.c.

static int filt_vfswrite ( struct knote *  kn, long  hint  )

static

Definition at line 4627 of file vfs_subr.c.

static int flushbuflist ( struct bufv *  bufv, int  flags, struct bufobj *  bo, int  slpflag, int  slptimeo  )

static

Definition at line 1363 of file vfs_subr.c.

References brelse(), bremfree(), and buf.

Referenced by bufobj_invalbuf().

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struct buf* gbincore	(	struct bufobj *	bo,
		daddr_t	lblkno
	)

Definition at line 1705 of file vfs_subr.c.

References buf, and buf_splay().

Referenced by cluster_read_gb(), cluster_wbuild_gb(), getblk(), incore(), and vfs_bio_clcheck().

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int getnewvnode	(	const char *	tag,
		struct mount *	mp,
		struct vop_vector *	vops,
		struct vnode **	vpp
	)

Definition at line 1051 of file vfs_subr.c.

References buf_ops_bio, getnewvnode_wait(), lockinit(), mtx_init(), numvnodes, printf(), rangelock_init(), v_incr_usecount(), vnlru_free(), and vnodes_created.

Referenced by mqfs_allocv(), nameiinit(), and vfs_allocate_syncvnode().

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void getnewvnode_drop_reserve

(

void

)

Definition at line 1038 of file vfs_subr.c.

References numvnodes.

void getnewvnode_reserve

(

u_int

count

)

Definition at line 1014 of file vfs_subr.c.

References count, getnewvnode_wait(), and numvnodes.

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static int getnewvnode_wait ( int  suspended )

static

Definition at line 989 of file vfs_subr.c.

References hz, numvnodes, vnlru_free(), and wakeup().

Referenced by getnewvnode(), and getnewvnode_reserve().

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u_quad_t init_va_filerev

(

void

)

Definition at line 4486 of file vfs_subr.c.

References bintime(), and getbinuptime().

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int insmntque	(	struct vnode *	vp,
		struct mount *	mp
	)

Definition at line 1253 of file vfs_subr.c.

References insmntque1(), and insmntque_stddtr().

Referenced by mqfs_allocv(), and vfs_allocate_syncvnode().

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int insmntque1	(	struct vnode *	vp,
		struct mount *	mp,
		void(*)(struct vnode *, void *)	dtr,
		void *	dtr_arg
	)

Definition at line 1197 of file vfs_subr.c.

Referenced by insmntque().

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static void insmntque_stddtr ( struct vnode *  vp, void *  dtr_arg  )

static

Definition at line 1180 of file vfs_subr.c.

References vgone(), and vput().

Referenced by insmntque().

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MALLOC_DEFINE	(	M_VNODE_MARKER	,
		"vnodemarker"	,
		"vnode marker"
	)

static void mnt_vnode_markerfree_active ( struct vnode **  mvp, struct mount *  mp  )

static

Definition at line 4851 of file vfs_subr.c.

References free().

Referenced by __mnt_vnode_first_active(), __mnt_vnode_markerfree_active(), and mnt_vnode_next_active().

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static struct vnode* mnt_vnode_next_active ( struct vnode **  mvp, struct mount *  mp  )

static

Definition at line 4870 of file vfs_subr.c.

References ALWAYS_YIELD, mnt_vnode_markerfree_active(), pause(), and should_yield().

Referenced by __mnt_vnode_first_active(), and __mnt_vnode_next_active().

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static void notify_lowervp_vfs_dummy ( struct mount *mp  __unused, struct vnode *lowervp  __unused  )

static

Definition at line 2807 of file vfs_subr.c.

Referenced by vfs_notify_upper().

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void reassignbuf

(

struct buf *

bp

)

Definition at line 2090 of file vfs_subr.c.

References buf_vlist_add(), buf_vlist_remove(), panic(), and vn_syncer_add_to_worklist().

Referenced by bdirty(), bundirty(), and cluster_wbuild_gb().

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static void sched_sync ( void  )

static

Definition at line 1895 of file vfs_subr.c.

References Giant, hz, kproc_suspend_check(), printf(), sched_prio(), sync_vnode(), syncer_shutdown(), SYNCER_SHUTDOWN_SPEEDUP, syncer_state, time_uptime, WI_GIANTQ, and WI_MPSAFEQ.

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int speedup_syncer

(

void

)

Definition at line 2051 of file vfs_subr.c.

static int sync_fsync ( struct vop_fsync_args *  ap )

static

Definition at line 3802 of file vfs_subr.c.

References vfs_busy(), vfs_msync(), vfs_unbusy(), vn_finished_write(), vn_start_write(), and vn_syncer_add_to_worklist().

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static int sync_inactive ( struct vop_inactive_args *  ap )

static

Definition at line 3846 of file vfs_subr.c.

References vgone().

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static int sync_reclaim ( struct vop_reclaim_args *  ap )

static

Definition at line 3859 of file vfs_subr.c.

static int sync_vnode ( struct synclist *  slp, struct bufobj **  bo, struct thread *  td  )

static

Definition at line 1846 of file vfs_subr.c.

References vdrop(), vholdl(), vn_finished_write(), vn_start_write(), and vn_syncer_add_to_worklist().

Referenced by sched_sync().

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static void syncer_shutdown ( void *  arg, int  howto  )

static

Definition at line 2071 of file vfs_subr.c.

References kproc_shutdown(), and syncer_state.

Referenced by sched_sync().

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SYSCTL_INT	(	_kern	,
		KERN_MAXVNODES	,
		maxvnodes	,
		CTLFLAG_RW	,
		&	desiredvnodes,
		0	,
		"Maximum number of vnodes"
	)

SYSCTL_INT	(	_debug	,
		OID_AUTO	,
		vnlru_nowhere	,
		CTLFLAG_RW	,
		&	vnlru_nowhere,
		0	,
		"Number of times the vnlru process ran without success"
	)

SYSCTL_INT	(	_vfs	,
		OID_AUTO	,
		timestamp_precision	,
		CTLFLAG_RW	,
		&	timestamp_precision,
		0	,
		"File timestamp precision (0: seconds, ""1: sec + ns accurate to 1/HZ, 2: sec + ns truncated to ms, ""3+: sec + ns (max. precision))"
	)

static SYSCTL_NODE ( _vfs  , VFS_GENERIC  , generic  , CTLFLAG_RD|  CTLFLAG_SKIP, vfs_sysctl  , "Generic filesystem"    )

static

static int sysctl_ovfs_conf ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 3430 of file vfs_subr.c.

References vfsconf.

Referenced by vfs_sysctl().

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SYSCTL_PROC	(	_vfs	,
		OID_AUTO	,
		worklist_len	,
		CTLTYPE_INT|	CTLFLAG_RD,
		NULL	,
		0	,
		sysctl_vfs_worklist_len	,
		"I"	,
		"Syncer thread worklist length"
	)

SYSCTL_PROC	(	_vfs	,
		OID_AUTO	,
		conflist	,
		CTLTYPE_OPAQUE|	CTLFLAG_RD,
		NULL	,
		0	,
		sysctl_vfs_conflist	,
		"	S,
		xvfsconf"	,
		"List of all configured filesystems"
	)

SYSCTL_PROC	(	_vfs	,
		OID_AUTO	,
		ctl	,
		CTLTYPE_OPAQUE|	CTLFLAG_WR,
		NULL	,
		0	,
		sysctl_vfs_ctl	,
		""	,
		"Sysctl by fsid"
	)

SYSCTL_ULONG	(	_vfs	,
		OID_AUTO	,
		numvnodes	,
		CTLFLAG_RD	,
		&	numvnodes,
		0	,
		"Number of vnodes in existence"
	)

SYSCTL_ULONG	(	_vfs	,
		OID_AUTO	,
		vnodes_created	,
		CTLFLAG_RD	,
		&	vnodes_created,
		0	,
		"Number of vnodes created by getnewvnode"
	)

SYSCTL_ULONG	(	_kern	,
		OID_AUTO	,
		minvnodes	,
		CTLFLAG_RW	,
		&	wantfreevnodes,
		0	,
		"Minimum number of vnodes (legacy)"
	)

static int sysctl_vfs_conflist ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 3359 of file vfs_subr.c.

References vfsconf, and vfsconf2x().

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static int sysctl_vfs_ctl ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 4451 of file vfs_subr.c.

References vfs_getvfs(), and vfs_rel().

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static int sysctl_vfs_worklist_len ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 1822 of file vfs_subr.c.

SYSINIT	(	vfs	,
		SI_SUB_VFS	,
		SI_ORDER_FIRST	,
		vntblinit	,
		NULL
	)

SYSINIT	(	vnlru	,
		SI_SUB_KTHREAD_UPDATE	,
		SI_ORDER_FIRST	,
		kproc_start	,
		&	vnlru_kp
	)

SYSINIT	(	syncer	,
		SI_SUB_KTHREAD_UPDATE	,
		SI_ORDER_FIRST	,
		kproc_start	,
		&	up_kp
	)

SYSINIT	(	vfs_knlist	,
		SI_SUB_VFS	,
		SI_ORDER_ANY	,
		vfs_event_init	,
		NULL
	)

static TAILQ_HEAD ( freelst  , vnode    )

static

Definition at line 146 of file vfs_subr.c.

void v_addpollinfo

(

struct vnode *

vp

)

Definition at line 3653 of file vfs_subr.c.

References destroy_vpollinfo_free(), knlist_init(), mtx_init(), vfs_knl_assert_locked(), vfs_knl_assert_unlocked(), vfs_knllock(), and vfs_knlunlock().

Referenced by vfs_kqfilter(), and vn_pollrecord().

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static void v_decr_usecount ( struct vnode *  vp )

static

Definition at line 2212 of file vfs_subr.c.

References dev_unlock(), and vdropl().

Referenced by vputx().

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static void v_decr_useonly ( struct vnode *  vp )

static

Definition at line 2235 of file vfs_subr.c.

References dev_unlock().

Referenced by vputx().

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static void v_incr_usecount ( struct vnode *  vp )

static

Definition at line 2176 of file vfs_subr.c.

References dev_unlock(), and vholdl().

Referenced by getnewvnode(), and vref().

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static void v_upgrade_usecount ( struct vnode *  vp )

static

Definition at line 2194 of file vfs_subr.c.

References dev_unlock().

Referenced by vget().

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int vaccess	(	enum vtype	type,
		mode_t	file_mode,
		uid_t	file_uid,
		gid_t	file_gid,
		accmode_t	accmode,
		struct ucred *	cred,
		int *	privused
	)

Definition at line 3913 of file vfs_subr.c.

References accmode, groupmember(), and priv_check_cred().

Referenced by kern_kmq_open(), ksem_access(), ksem_chmod(), mqf_chmod(), mqfs_access(), shm_access(), and shm_chmod().

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void vattr_null

(

struct vattr *

vap

)

Definition at line 662 of file vfs_subr.c.

Referenced by vfs_register().

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int vcount

(

struct vnode *

vp

)

Definition at line 2960 of file vfs_subr.c.

References count, and dev_unlock().

Referenced by sys_revoke().

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void vdrop

(

struct vnode *

vp

)

Definition at line 2493 of file vfs_subr.c.

References vdropl().

Referenced by brelvp(), cache_zap(), do_recycle(), dounmount(), filt_vfsdetach(), mqfs_allocv(), sync_vnode(), vflush(), vget(), vlrureclaim(), vnlru_free(), and vop_rename_post().

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void vdropl

(

struct vnode *

vp

)

Definition at line 2506 of file vfs_subr.c.

References destroy_vpollinfo(), lockdestroy(), mtx_destroy(), numvnodes, panic(), rangelock_destroy(), and VSHOULDFREE.

Referenced by v_decr_usecount(), vdrop(), vflush(), vlrureclaim(), and vputx().

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int vflush	(	struct mount *	mp,
		int	rootrefs,
		int	flags,
		struct thread *	td
	)

Definition at line 2656 of file vfs_subr.c.

References busy, vdrop(), vdropl(), vgone(), vgonel(), vholdl(), vput(), and vrele().

Referenced by mqfs_unmount().

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void vfs_allocate_syncvnode

(

struct mount *

mp

)

Definition at line 3730 of file vfs_subr.c.

References getnewvnode(), insmntque(), panic(), start, vgone(), vn_syncer_add_to_worklist(), and vput().

Referenced by dounmount(), vfs_domount_first(), and vfs_domount_update().

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int vfs_busy	(	struct mount *	mp,
		int	flags
	)

Definition at line 395 of file vfs_subr.c.

References mountlist_mtx.

Referenced by kern_fstatfs(), kern_getfsstat(), kern_statfs(), lookup(), sync_fsync(), sys_extattrctl(), sys_fchdir(), sys_quotactl(), sys_sync(), vfs_busyfs(), vfs_domount_update(), vfs_mount_alloc(), vn_vget_ino(), and vnlru_proc().

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struct mount* vfs_busyfs

(

fsid_t *

fsid

)

Definition at line 493 of file vfs_subr.c.

References FSID_CACHE_SIZE, mountlist, mountlist_mtx, vfs_busy(), and vfs_unbusy().

Referenced by kern_fhstatfs(), sys_fhopen(), and sys_fhstat().

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void vfs_deallocate_syncvnode

(

struct mount *

mp

)

Definition at line 3785 of file vfs_subr.c.

References vrele().

Referenced by dounmount(), and vfs_domount_update().

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static void vfs_event_init ( void *  arg )

static

Definition at line 4401 of file vfs_subr.c.

References fs_knlist, and knlist_init_mtx().

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void vfs_event_signal	(	fsid_t *	fsid,
		uint32_t	event,
		intptr_t data	__unused
	)

Definition at line 4409 of file vfs_subr.c.

References fs_knlist.

Referenced by dounmount(), and vfs_domount_first().

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void vfs_getnewfsid

(

struct mount *

mp

)

Definition at line 590 of file vfs_subr.c.

References vfs_getvfs(), and vfs_rel().

Referenced by mqfs_mount().

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struct mount* vfs_getvfs

(

fsid_t *

fsid

)

Definition at line 463 of file vfs_subr.c.

References mountlist, mountlist_mtx, and vfs_ref().

Referenced by sysctl_vfs_ctl(), and vfs_getnewfsid().

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static void vfs_knl_assert_locked ( void *  arg )

static

Definition at line 4531 of file vfs_subr.c.

Referenced by v_addpollinfo().

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static void vfs_knl_assert_unlocked ( void *  arg )

static

Definition at line 4541 of file vfs_subr.c.

Referenced by v_addpollinfo().

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static void vfs_knllock ( void *  arg )

static

Definition at line 4515 of file vfs_subr.c.

Referenced by v_addpollinfo().

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static void vfs_knlunlock ( void *  arg )

static

Definition at line 4523 of file vfs_subr.c.

Referenced by v_addpollinfo().

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int vfs_kqfilter

(

struct vop_kqfilter_args *

ap

)

Definition at line 4551 of file vfs_subr.c.

References knlist_add(), knote(), v_addpollinfo(), vfsread_filtops, vfsvnode_filtops, vfswrite_filtops, and vhold().

Referenced by vop_stdkqfilter().

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void vfs_mark_atime	(	struct vnode *	vp,
		struct ucred *	cred
	)

Definition at line 4701 of file vfs_subr.c.

Referenced by do_execve().

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void vfs_msync	(	struct mount *	mp,
		int	flags
	)

Definition at line 3598 of file vfs_subr.c.

References vget(), and vput().

Referenced by dounmount(), sync_fsync(), and sys_sync().

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void vfs_notify_upper	(	struct vnode *	vp,
		int	event
	)

Definition at line 2816 of file vfs_subr.c.

References free(), malloc(), notify_lowervp_vfs_dummy(), and wakeup().

Referenced by kern_rmdirat(), kern_unlinkat(), and vgonel().

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int vfs_read_dirent	(	struct vop_readdir_args *	ap,
		struct dirent *	dp,
		off_t	off
	)

Definition at line 4665 of file vfs_subr.c.

References free(), realloc(), and uiomove().

Referenced by mqfs_readdir().

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int vfs_suser	(	struct mount *	mp,
		struct thread *	td
	)

Definition at line 544 of file vfs_subr.c.

References jailed(), prison_check(), and priv_check().

Referenced by dounmount(), and vfs_domount_update().

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static int vfs_sysctl ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 3386 of file vfs_subr.c.

References maxvfsconf, name, printf(), sysctl_ovfs_conf(), vfsconf, and vfsconf2x().

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void vfs_timestamp

(

struct timespec *

tsp

)

Definition at line 635 of file vfs_subr.c.

References getnanotime(), microtime(), nanotime(), time_second, TSP_HZ, TSP_NSEC, TSP_SEC, and TSP_USEC.

Referenced by getutimes(), kern_sem_wait(), ksem_alloc(), mqfs_create_node(), mqfs_setattr(), pipe_read(), pipe_write(), pipe_zone_ctor(), shm_alloc(), shm_dotruncate(), shm_mmap(), sys_ksem_getvalue(), and sys_ksem_post().

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void vfs_unbusy

(

struct mount *

mp

)

Definition at line 442 of file vfs_subr.c.

References wakeup().

Referenced by kern_fhstatfs(), kern_fstatfs(), kern_getfsstat(), kern_statfs(), lookup(), sync_fsync(), sys_extattrctl(), sys_fchdir(), sys_fhopen(), sys_fhstat(), sys_quotactl(), sys_sync(), vfs_busyfs(), vfs_domount_first(), vfs_domount_update(), vfs_mountroot_shuffle(), vn_vget_ino(), and vnlru_proc().

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int vfs_unixify_accmode

(

accmode_t *

accmode

)

Definition at line 4725 of file vfs_subr.c.

Referenced by vop_stdaccessx().

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void vfs_unmountall

(

void

)

Definition at line 3554 of file vfs_subr.c.

References dounmount(), mountlist, and printf().

Referenced by kern_reboot().

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static int vfsconf2x ( struct sysctl_req *  req, struct vfsconf *  vfsp  )

static

Definition at line 3312 of file vfs_subr.c.

Referenced by sysctl_vfs_conflist(), and vfs_sysctl().

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int vget	(	struct vnode *	vp,
		int	flags,
		struct thread *	td
	)

Definition at line 2258 of file vfs_subr.c.

References panic(), v_upgrade_usecount(), vdrop(), vholdl(), and vinactive().

Referenced by cache_lookup_times(), mqfs_allocv(), vfs_hash_get(), vfs_hash_insert(), vfs_msync(), vfs_stdsync(), and vn_dir_dd_ino().

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void vgone

(

struct vnode *

vp

)

Definition at line 2799 of file vfs_subr.c.

References vgonel().

Referenced by insmntque_stddtr(), mqfs_allocv(), sync_inactive(), vflush(), and vfs_allocate_syncvnode().

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void vgonel ( struct vnode *  vp )

static

Definition at line 2873 of file vfs_subr.c.

References cache_purge(), delmntque(), panic(), vfs_notify_upper(), vfs_unp_reclaim(), vinactive(), vinvalbuf(), vn_finished_secondary_write(), and vn_start_secondary_write().

Referenced by vflush(), vgone(), vlrureclaim(), vrecycle(), and vtryrecycle().

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void vhold

(

struct vnode *

vp

)

Definition at line 2448 of file vfs_subr.c.

References vholdl().

Referenced by bgetvp(), cache_enter_time(), do_unlink(), mqfs_allocv(), vfs_kqfilter(), and vop_rename_pre().

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void vholdl

(

struct vnode *

vp

)

Definition at line 2460 of file vfs_subr.c.

References VSHOULDBUSY.

Referenced by dounmount(), sync_vnode(), v_incr_usecount(), vflush(), vget(), vhold(), vlrureclaim(), and vnlru_free().

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void vinactive	(	struct vnode *	vp,
		struct thread *	td
	)

Definition at line 2597 of file vfs_subr.c.

Referenced by vget(), vgonel(), and vputx().

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int vinvalbuf	(	struct vnode *	vp,
		int	flags,
		int	slpflag,
		int	slptimeo
	)

Definition at line 1348 of file vfs_subr.c.

References bufobj_invalbuf().

Referenced by vfs_domount_first(), vfs_mountroot_shuffle(), vgonel(), and vop_stdadvise().

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static int vlrureclaim ( struct mount *  mp )

static

Definition at line 705 of file vfs_subr.c.

References count, desiredvnodes, kern_yield(), should_yield(), vdrop(), vdropl(), vgonel(), vholdl(), vn_finished_write(), and vn_start_write().

Referenced by vnlru_proc().

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int vn_isdisk	(	struct vnode *	vp,
		int *	errp
	)

Definition at line 3885 of file vfs_subr.c.

References dev_unlock().

Referenced by aio_qphysio(), bp_unmapped_get_kva(), brelse(), getblk(), and sys_aio_cancel().

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int vn_pollrecord	(	struct vnode *	vp,
		struct thread *	td,
		int	events
	)

Definition at line 3682 of file vfs_subr.c.

References selrecord(), and v_addpollinfo().

Referenced by vop_stdpoll().

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void vn_printf	(	struct vnode *	vp,
		const char *	fmt,
			...
	)

Definition at line 2992 of file vfs_subr.c.

References buf, lockmgr_printinfo(), printf(), snprintf(), and vprintf().

Referenced by kern_reboot().

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static void vn_syncer_add_to_worklist ( struct bufobj *  bo, int  delay  )

static

Definition at line 1796 of file vfs_subr.c.

References WI_GIANTQ, and WI_MPSAFEQ.

Referenced by reassignbuf(), sync_fsync(), sync_vnode(), and vfs_allocate_syncvnode().

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static void vnlru_free ( int  count )

static

Definition at line 807 of file vfs_subr.c.

References VCANRECYCLE, vdrop(), vholdl(), and vtryrecycle().

Referenced by getnewvnode(), getnewvnode_wait(), and vnlru_proc().

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static void vnlru_proc ( void  )

static

Definition at line 863 of file vfs_subr.c.

References hz, kern_yield(), kproc_shutdown(), kproc_suspend_check(), mountlist, mountlist_mtx, numvnodes, printf(), vfs_busy(), vfs_unbusy(), vlrureclaim(), vnlru_free(), vnlruproc, and wakeup().

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static void vntblinit ( void *dummy  __unused )

static

Definition at line 307 of file vfs_subr.c.

References bootverbose, cv_init(), hashinit(), maxproc, MAXVNODES_MAX, mtx_init(), printf(), vm_kmem_size, WI_GIANTQ, and WI_MPSAFEQ.

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void vop_create_post	(	void *	ap,
		int	rc
	)

Definition at line 4282 of file vfs_subr.c.

void vop_deleteextattr_post	(	void *	ap,
		int	rc
	)

Definition at line 4291 of file vfs_subr.c.

void vop_link_post	(	void *	ap,
		int	rc
	)

Definition at line 4300 of file vfs_subr.c.

void vop_lock_post	(	void *	ap,
		int	rc
	)

Definition at line 4247 of file vfs_subr.c.

void vop_lock_pre

(

void *

ap

)

Definition at line 4234 of file vfs_subr.c.

void vop_mkdir_post	(	void *	ap,
		int	rc
	)

Definition at line 4311 of file vfs_subr.c.

void vop_mknod_post	(	void *	ap,
		int	rc
	)

Definition at line 4320 of file vfs_subr.c.

void vop_remove_post	(	void *	ap,
		int	rc
	)

Definition at line 4329 of file vfs_subr.c.

void vop_rename_fail

(

struct vop_rename_args *

ap

)

Definition at line 4161 of file vfs_subr.c.

References vput(), and vrele().

Referenced by vop_norename().

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void vop_rename_post	(	void *	ap,
		int	rc
	)

Definition at line 4340 of file vfs_subr.c.

References vdrop().

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void vop_rename_pre

(

void *

ap

)

Definition at line 4175 of file vfs_subr.c.

References vhold().

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void vop_rmdir_post	(	void *	ap,
		int	rc
	)

Definition at line 4361 of file vfs_subr.c.

void vop_setattr_post	(	void *	ap,
		int	rc
	)

Definition at line 4372 of file vfs_subr.c.

void vop_setextattr_post	(	void *	ap,
		int	rc
	)

Definition at line 4381 of file vfs_subr.c.

void vop_strategy_pre

(

void *

ap

)

Definition at line 4208 of file vfs_subr.c.

References kdb_enter(), panicstr, and printf().

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void vop_symlink_post	(	void *	ap,
		int	rc
	)

Definition at line 4390 of file vfs_subr.c.

void vop_unlock_post	(	void *	ap,
		int	rc
	)

Definition at line 4271 of file vfs_subr.c.

void vop_unlock_pre

(

void *

ap

)

Definition at line 4259 of file vfs_subr.c.

void vput

(

struct vnode *

vp

)

Definition at line 2428 of file vfs_subr.c.

References vputx(), and VPUTX_VPUT.

Referenced by cache_lookup_times(), do_execve(), dounmount(), insmntque_stddtr(), kern_accessat(), kern_chdir(), kern_fhstatfs(), kern_getdirentries(), kern_jail_set(), kern_linkat(), kern_mkdirat(), kern_mkfifoat(), kern_mknodat(), kern_pathconf(), kern_proc_vmmap_out(), kern_readlinkat(), kern_renameat(), kern_rmdirat(), kern_statat_vnhook(), kern_statfs(), kern_symlinkat(), kern_unlinkat(), load_file(), lookup(), mqfs_allocv(), namei(), NDFREE(), parse_mount_dev_present(), ptrace_vm_entry(), relookup(), sys_chroot(), sys_fchdir(), sys_fhopen(), sys_fhstat(), sys_getfh(), sys_lgetfh(), sys_quotactl(), sys_revoke(), sys_undelete(), sys_unmount(), uipc_bind(), unp_connect(), vflush(), vfs_allocate_syncvnode(), vfs_domount_first(), vfs_domount_update(), vfs_hash_insert(), vfs_mountroot_shuffle(), vfs_msync(), vfs_setpublicfs(), vfs_stdsync(), vn_close(), vn_open_cred(), vn_path_to_global_path(), vn_vget_ino(), vn_vptocnp_locked(), vop_rename_fail(), and vop_stdvptocnp().

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static void vputx ( struct vnode *  vp, int  func  )

static

Definition at line 2337 of file vfs_subr.c.

References panic(), v_decr_usecount(), v_decr_useonly(), vdropl(), vinactive(), VPUTX_VPUT, VPUTX_VRELE, and VPUTX_VUNREF.

Referenced by vput(), vrele(), and vunref().

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int vrecycle	(	struct vnode *	vp,
		struct thread *	td
	)

Definition at line 2778 of file vfs_subr.c.

References vgonel().

Referenced by do_recycle(), and mqfs_inactive().

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void vref

(

struct vnode *

vp

)

Definition at line 2302 of file vfs_subr.c.

References v_incr_usecount().

Referenced by _fgetvp(), do_fork(), dounmount(), kern_jail_set(), kern_proc_filedesc_out(), kern_proc_vmmap_out(), lf_advlockasync(), lf_iteratelocks_sysid(), lf_iteratelocks_vnode(), lf_split(), lookup(), mountcheckdirs(), ptrace_vm_entry(), sysctl_kern_proc_pathname(), vfs_mountroot(), vn_fullpath1(), vn_vptocnp_locked(), and vop_stdvptocnp().

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int vrefcnt

(

struct vnode *

vp

)

Definition at line 2321 of file vfs_subr.c.

Referenced by mountcheckdirs().

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void vrele

(

struct vnode *

vp

)

Definition at line 2416 of file vfs_subr.c.

References vputx(), and VPUTX_VRELE.

Referenced by cache_lookup_times(), change_root(), do_execve(), dounmount(), exit1(), export_fd_to_sb(), fdfree(), kern___getcwd(), kern_alternate_path(), kern_chdir(), kern_fchmodat(), kern_fchownat(), kern_jail_set(), kern_linkat(), kern_lutimes(), kern_mkdirat(), kern_mkfifoat(), kern_mknodat(), kern_renameat(), kern_rmdirat(), kern_sendfile(), kern_symlinkat(), kern_truncate(), kern_unlinkat(), kern_utimesat(), lf_free_lock(), lf_iteratelocks_sysid(), lf_iteratelocks_vnode(), lookup(), mountcheckdirs(), namei(), NDFREE(), prison_deref(), relookup(), set_rootvnode(), sys_chflags(), sys_chroot(), sys_extattr_delete_file(), sys_extattr_delete_link(), sys_extattr_get_file(), sys_extattr_get_link(), sys_extattr_list_file(), sys_extattr_list_link(), sys_extattr_set_file(), sys_extattr_set_link(), sys_extattrctl(), sys_fchdir(), sys_fhopen(), sys_ktrace(), sys_lchflags(), sys_undelete(), sysctl_kern_proc_pathname(), uipc_bind(), uipc_detach(), vflush(), vfs_deallocate_syncvnode(), vfs_domount_first(), vfs_domount_update(), vfs_mountroot_shuffle(), vn_fullpath(), vn_fullpath1(), vn_open_cred(), vn_path_to_global_path(), vn_vptocnp_locked(), vop_rename_fail(), and vop_stdvptocnp().

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int vtruncbuf	(	struct vnode *	vp,
		struct ucred *	cred,
		struct thread *	td,
		off_t	length,
		int	blksize
	)

Definition at line 1441 of file vfs_subr.c.

References bawrite(), brelse(), bremfree(), buf, and bufobj_wwait().

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static int vtryrecycle ( struct vnode *  vp )

static

Definition at line 934 of file vfs_subr.c.

References vgonel(), vn_finished_write(), and vn_start_write().

Referenced by vnlru_free().

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void vunref

(

struct vnode *

vp

)

Definition at line 2438 of file vfs_subr.c.

References vputx(), and VPUTX_VUNREF.

Referenced by vfs_unp_reclaim().

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Variable Documentation

int desiredvnodes

Definition at line 276 of file vfs_subr.c.

Referenced by cache_enter_time(), LIST_HEAD(), nchinit(), and vlrureclaim().

struct filterops fs_filtops

Initial value:

= {
        .f_isfd = 0,
        .f_attach = filt_fsattach,
        .f_detach = filt_fsdetach,
        .f_event = filt_fsevent
}

Definition at line 4419 of file vfs_subr.c.

struct knlist fs_knlist

static

Definition at line 4398 of file vfs_subr.c.

Referenced by filt_fsattach(), filt_fsdetach(), vfs_event_init(), and vfs_event_signal().

enum vtype iftovt_tab[16]

Initial value:

= {
        VNON, VFIFO, VCHR, VNON, VDIR, VNON, VBLK, VNON,
        VREG, VNON, VLNK, VNON, VSOCK, VNON, VNON, VBAD,
}

Definition at line 134 of file vfs_subr.c.

unsigned long numvnodes

static

Definition at line 121 of file vfs_subr.c.

Referenced by getnewvnode(), getnewvnode_drop_reserve(), getnewvnode_reserve(), getnewvnode_wait(), vdropl(), and vnlru_proc().

struct vop_vector sync_vnodeops

static

Initial value:

= {
        .vop_bypass =   VOP_EOPNOTSUPP,
        .vop_close =    sync_close,             
        .vop_fsync =    sync_fsync,             
        .vop_inactive = sync_inactive,  
        .vop_reclaim =  sync_reclaim,   
        .vop_lock1 =    vop_stdlock,    
        .vop_unlock =   vop_stdunlock,  
        .vop_islocked = vop_stdislocked,        
}

Definition at line 3715 of file vfs_subr.c.

syncer_state

Definition at line 267 of file vfs_subr.c.

Referenced by sched_sync(), and syncer_shutdown().

int timestamp_precision = TSP_USEC

static

Definition at line 625 of file vfs_subr.c.

char* typename[]

static

Initial value:

=
{"VNON", "VREG", "VDIR", "VBLK", "VCHR", "VLNK", "VSOCK", "VFIFO", "VBAD",
 "VMARKER"}

Definition at line 2987 of file vfs_subr.c.

struct kproc_desc up_kp

static

Initial value:

= {
        "syncer",
        sched_sync,
        &updateproc
}

Definition at line 1838 of file vfs_subr.c.

struct proc* updateproc

static

Definition at line 1836 of file vfs_subr.c.

struct filterops vfsread_filtops

static

Initial value:

= {
        .f_isfd = 1,
        .f_detach = filt_vfsdetach,
        .f_event = filt_vfsread
}

Definition at line 4498 of file vfs_subr.c.

Referenced by vfs_kqfilter().

struct filterops vfsvnode_filtops

static

Initial value:

= {
        .f_isfd = 1,
        .f_detach = filt_vfsdetach,
        .f_event = filt_vfsvnode
}

Definition at line 4508 of file vfs_subr.c.

Referenced by vfs_kqfilter().

struct filterops vfswrite_filtops

static

Initial value:

= {
        .f_isfd = 1,
        .f_detach = filt_vfsdetach,
        .f_event = filt_vfswrite
}

Definition at line 4503 of file vfs_subr.c.

Referenced by vfs_kqfilter().

struct kproc_desc vnlru_kp

static

Initial value:

= {
        "vnlru",
        vnlru_proc,
        &vnlruproc
}

Definition at line 915 of file vfs_subr.c.

int vnlru_nowhere

static

Definition at line 281 of file vfs_subr.c.

struct proc* vnlruproc

static

Definition at line 859 of file vfs_subr.c.

Referenced by vnlru_proc().

int vnlruproc_sig

static

Definition at line 860 of file vfs_subr.c.

u_long vnodes_created

static

Definition at line 126 of file vfs_subr.c.

Referenced by getnewvnode().

int vnsz2log

static

Definition at line 294 of file vfs_subr.c.

int vttoif_tab[10]

Initial value:

= {
        0, S_IFREG, S_IFDIR, S_IFBLK, S_IFCHR, S_IFLNK,
        S_IFSOCK, S_IFIFO, S_IFMT, S_IFMT
}

Definition at line 138 of file vfs_subr.c.