diff options
Diffstat (limited to 'sys/ufs')
| -rw-r--r-- | sys/ufs/ufs/ufs_vnops.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/sys/ufs/ufs/ufs_vnops.c b/sys/ufs/ufs/ufs_vnops.c index 6d38f509ed396..dd073dc143f64 100644 --- a/sys/ufs/ufs/ufs_vnops.c +++ b/sys/ufs/ufs/ufs_vnops.c @@ -2874,6 +2874,22 @@ ufs_ioctl(struct vop_ioctl_args *ap) } } +static int +ufs_read_pgcache(struct vop_read_pgcache_args *ap) +{ + struct uio *uio; + struct vnode *vp; + + uio = ap->a_uio; + vp = ap->a_vp; + MPASS((vp->v_irflag & VIRF_PGREAD) != 0); + + if (uio->uio_resid > ptoa(io_hold_cnt) || uio->uio_offset < 0 || + (ap->a_ioflag & IO_DIRECT) != 0) + return (EJUSTRETURN); + return (vn_read_from_obj(vp, uio)); +} + /* Global vfs data structures for ufs. */ struct vop_vector ufs_vnodeops = { .vop_default = &default_vnodeops, @@ -2901,6 +2917,7 @@ struct vop_vector ufs_vnodeops = { .vop_pathconf = ufs_pathconf, .vop_poll = vop_stdpoll, .vop_print = ufs_print, + .vop_read_pgcache = ufs_read_pgcache, .vop_readdir = ufs_readdir, .vop_readlink = ufs_readlink, .vop_reclaim = ufs_reclaim, |