diff options
Diffstat (limited to 'sys/fs/devfs/devfs_vnops.c')
| -rw-r--r-- | sys/fs/devfs/devfs_vnops.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/sys/fs/devfs/devfs_vnops.c b/sys/fs/devfs/devfs_vnops.c index 4b348ec..55eaeb6 100644 --- a/sys/fs/devfs/devfs_vnops.c +++ b/sys/fs/devfs/devfs_vnops.c @@ -78,12 +78,14 @@ static int devfs_fp_check(struct file *fp, struct cdev **devp, struct cdevsw **dswp) { - *devp = fp->f_vnode->v_rdev; - if (*devp != fp->f_data) + *dswp = devvn_refthread(fp->f_vnode, devp); + if (*devp != fp->f_data) { + if (*dswp != NULL) + dev_relthread(*devp); return (ENXIO); + } KASSERT((*devp)->si_refcount > 0, ("devfs: un-referenced struct cdev *(%s)", devtoname(*devp))); - *dswp = dev_refthread(*devp); if (*dswp == NULL) return (ENXIO); return (0); @@ -965,13 +967,15 @@ devfs_reclaim(struct vop_reclaim_args *ap) vnode_destroy_vobject(vp); + dev_lock(); dev = vp->v_rdev; vp->v_rdev = NULL; - if (dev == NULL) + if (dev == NULL) { + dev_unlock(); return (0); + } - dev_lock(); dev->si_usecount -= vp->v_usecount; dev_unlock(); dev_rel(dev); |
