diff options
Diffstat (limited to 'sys/fs/specfs')
| -rw-r--r-- | sys/fs/specfs/spec_vnops.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/sys/fs/specfs/spec_vnops.c b/sys/fs/specfs/spec_vnops.c index 8a3e124..31519d3 100644 --- a/sys/fs/specfs/spec_vnops.c +++ b/sys/fs/specfs/spec_vnops.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)spec_vnops.c 8.14 (Berkeley) 5/21/95 - * $Id: spec_vnops.c,v 1.71 1998/08/25 17:48:54 phk Exp $ + * $Id: spec_vnops.c,v 1.72 1998/09/04 08:06:56 dfr Exp $ */ #include <sys/param.h> @@ -61,6 +61,7 @@ static int spec_advlock __P((struct vop_advlock_args *)); static int spec_badop __P((void)); static int spec_bmap __P((struct vop_bmap_args *)); static int spec_close __P((struct vop_close_args *)); +static void spec_freeblks __P((struct vop_freeblks_args *)); static int spec_fsync __P((struct vop_fsync_args *)); static int spec_getattr __P((struct vop_getattr_args *)); static int spec_getpages __P((struct vop_getpages_args *)); @@ -109,6 +110,7 @@ static struct vnodeopv_entry_desc spec_vnodeop_entries[] = { { &vop_strategy_desc, (vop_t *) spec_strategy }, { &vop_symlink_desc, (vop_t *) spec_badop }, { &vop_write_desc, (vop_t *) spec_write }, + { &vop_freeblks_desc, (vop_t *) spec_freeblks }, { NULL, NULL } }; static struct vnodeopv_desc spec_vnodeop_opv_desc = @@ -540,6 +542,29 @@ spec_strategy(ap) return (0); } +static void +spec_freeblks(ap) + struct vop_freeblks_args /* { + struct vnode *a_vp; + daddr_t a_addr; + daddr_t a_length; + } */ *ap; +{ + struct cdevsw *bsw; + struct buf *bp; + + bsw = bdevsw[major(ap->a_vp->v_rdev)]; + if ((bsw->d_flags & D_CANFREE) == 0) + return; + bp = geteblk(ap->a_length); + bp->b_flags |= B_FREEBUF | B_BUSY; + bp->b_dev = ap->a_vp->v_rdev; + bp->b_blkno = ap->a_addr; + bp->b_offset = dbtob(ap->a_addr); + bp->b_bcount = ap->a_length; + (*bsw->d_strategy)(bp); +} + /* * This is a noop, simply returning what one has been given. */ |
