diff options
| author | David Greenman <dg@FreeBSD.org> | 1994-10-05 09:48:45 +0000 |
|---|---|---|
| committer | David Greenman <dg@FreeBSD.org> | 1994-10-05 09:48:45 +0000 |
| commit | 8e58bf687510147b5cd664eab7a2bf7ddb4025f6 (patch) | |
| tree | 9c109936447aaa693cde32bdf5eba383172d10b9 /sys/kern/vfs_vnops.c | |
| parent | 5cedf6806bff121131a20e468d594bd67740c91c (diff) | |
| download | src-test2-8e58bf687510147b5cd664eab7a2bf7ddb4025f6.tar.gz src-test2-8e58bf687510147b5cd664eab7a2bf7ddb4025f6.zip | |
Notes
Diffstat (limited to 'sys/kern/vfs_vnops.c')
| -rw-r--r-- | sys/kern/vfs_vnops.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c index de89705ae933..79b92cbd40ef 100644 --- a/sys/kern/vfs_vnops.c +++ b/sys/kern/vfs_vnops.c @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)vfs_vnops.c 8.2 (Berkeley) 1/21/94 - * $Id: vfs_vnops.c,v 1.4 1994/08/18 03:53:38 davidg Exp $ + * $Id: vfs_vnops.c,v 1.5 1994/10/02 17:35:40 phk Exp $ */ #include <sys/param.h> @@ -152,6 +152,30 @@ vn_open(ndp, fmode, cmode) goto bad; if (fmode & FWRITE) vp->v_writecount++; + /* + * this is here for VMIO support + */ + if( vp->v_type == VREG) { + vm_object_t object; + vm_pager_t pager; + if( (vp->v_flag & VVMIO) == 0) { + pager = (vm_pager_t) vnode_pager_alloc(vp, 0, 0, 0); + object = (vm_object_t) vp->v_vmdata; + if( object->pager != pager) + panic("ufs_open: pager/object mismatch"); + (void) vm_object_lookup( pager); + pager_cache( object, TRUE); + vp->v_flag |= VVMIO; + } else { + object = (vm_object_t) vp->v_vmdata; + if( !object) + panic("ufs_open: VMIO object missing"); + pager = object->pager; + if( !pager) + panic("ufs_open: VMIO pager missing"); + (void) vm_object_lookup( pager); + } + } return (0); bad: vput(vp); @@ -206,6 +230,15 @@ vn_close(vp, flags, cred, p) if (flags & FWRITE) vp->v_writecount--; error = VOP_CLOSE(vp, flags, cred, p); + /* + * this code is here for VMIO support, will eventually + * be in vfs code. + */ + if (vp->v_flag & VVMIO) { + if( vp->v_vmdata == NULL) + panic("ufs_close: VMIO object missing"); + vm_object_deallocate( (vm_object_t) vp->v_vmdata); + } vrele(vp); return (error); } |