diff options
Diffstat (limited to 'sys/kern/vfs_mount.c')
| -rw-r--r-- | sys/kern/vfs_mount.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/kern/vfs_mount.c b/sys/kern/vfs_mount.c index 8e64a7fe966b..13403acacc08 100644 --- a/sys/kern/vfs_mount.c +++ b/sys/kern/vfs_mount.c @@ -683,7 +683,6 @@ vfs_mount_alloc(struct vnode *vp, struct vfsconf *vfsp, const char *fspath, MPASSERT(mp->mnt_vfs_ops == 1, mp, ("vfs_ops should be 1 but %d found", mp->mnt_vfs_ops)); (void) vfs_busy(mp, MBF_NOWAIT); - atomic_add_acq_int(&vfsp->vfc_refcount, 1); mp->mnt_op = vfsp->vfc_vfsops; mp->mnt_vfc = vfsp; mp->mnt_stat.f_type = vfsp->vfc_typenum; @@ -731,7 +730,6 @@ vfs_mount_destroy(struct mount *mp) __FILE__, __LINE__)); MPPASS(mp->mnt_writeopcount == 0, mp); MPPASS(mp->mnt_secondary_writes == 0, mp); - atomic_subtract_rel_int(&mp->mnt_vfc->vfc_refcount, 1); if (!TAILQ_EMPTY(&mp->mnt_nvnodelist)) { struct vnode *vp; @@ -769,6 +767,9 @@ vfs_mount_destroy(struct mount *mp) vfs_free_addrlist(mp->mnt_export); free(mp->mnt_export, M_MOUNT); } + vfsconf_lock(); + mp->mnt_vfc->vfc_refcount--; + vfsconf_unlock(); crfree(mp->mnt_cred); uma_zfree(mount_zone, mp); } @@ -1133,6 +1134,7 @@ vfs_domount_first( if (jailed(td->td_ucred) && (!prison_allow(td->td_ucred, vfsp->vfc_prison_flag) || vp == td->td_ucred->cr_prison->pr_root)) { vput(vp); + vfs_unref_vfsconf(vfsp); return (EPERM); } @@ -1169,6 +1171,7 @@ vfs_domount_first( } if (error != 0) { vput(vp); + vfs_unref_vfsconf(vfsp); return (error); } vn_seqc_write_begin(vp); |