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Properly lock new vnode.

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Reminded by:	tegge
This commit is contained in:
Boris Popov 2001-01-31 04:54:23 +00:00
parent 1707240d2a
commit f3f1af390d
2 changed files with 18 additions and 8 deletions
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13
sys/kern/vfs_export.c
View File

@ -1380,12 +1380,17 @@ addaliasu(nvp, nvp_rdev)
ovp->v_data = nvp->v_data;
ovp->v_tag = nvp->v_tag;
nvp->v_data = NULL;
ops = nvp->v_op;
nvp->v_op = ovp->v_op;
ovp->v_op = ops;
lockinit(&ovp->v_lock, PVFS, "vnlock", 0, LK_NOPAUSE);
lockinit(&ovp->v_lock, PVFS, nvp->v_lock.lk_wmesg,
nvp->v_lock.lk_timo, nvp->v_lock.lk_flags & LK_EXTFLG_MASK);
if (nvp->v_vnlock)
ovp->v_vnlock = &ovp->v_lock;
ops = ovp->v_op;
ovp->v_op = nvp->v_op;
if (VOP_ISLOCKED(nvp, curproc)) {
VOP_UNLOCK(nvp, 0, curproc);
vn_lock(ovp, LK_EXCLUSIVE | LK_RETRY, curproc);
}
nvp->v_op = ops;
insmntque(ovp, nvp->v_mount);
vrele(nvp);
vgone(nvp);

13
sys/kern/vfs_subr.c
View File

@ -1380,12 +1380,17 @@ addaliasu(nvp, nvp_rdev)
ovp->v_data = nvp->v_data;
ovp->v_tag = nvp->v_tag;
nvp->v_data = NULL;
ops = nvp->v_op;
nvp->v_op = ovp->v_op;
ovp->v_op = ops;
lockinit(&ovp->v_lock, PVFS, "vnlock", 0, LK_NOPAUSE);
lockinit(&ovp->v_lock, PVFS, nvp->v_lock.lk_wmesg,
nvp->v_lock.lk_timo, nvp->v_lock.lk_flags & LK_EXTFLG_MASK);
if (nvp->v_vnlock)
ovp->v_vnlock = &ovp->v_lock;
ops = ovp->v_op;
ovp->v_op = nvp->v_op;
if (VOP_ISLOCKED(nvp, curproc)) {
VOP_UNLOCK(nvp, 0, curproc);
vn_lock(ovp, LK_EXCLUSIVE | LK_RETRY, curproc);
}
nvp->v_op = ops;
insmntque(ovp, nvp->v_mount);
vrele(nvp);
vgone(nvp);