diff options
| -rw-r--r-- | sys/kern/vfs_subr.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 72d41c9..aa234be 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -3247,8 +3247,14 @@ vbusy(vp) void v_addpollinfo(struct vnode *vp) { + struct vpollinfo *vi; - vp->v_pollinfo = uma_zalloc(vnodepoll_zone, M_WAITOK); + vi = uma_zalloc(vnodepoll_zone, M_WAITOK); + if (vp->v_pollinfo != NULL) { + uma_zfree(vnodepoll_zone, vi); + return; + } + vp->v_pollinfo = vi; mtx_init(&vp->v_pollinfo->vpi_lock, "vnode pollinfo", NULL, MTX_DEF); } |
