Author: kib
Date: Thu May 30 15:04:09 2019
New Revision: 348421
URL: https://svnweb.freebsd.org/changeset/base/348421
Log:
Silence witness warning about duplicated mutex type.
The order is correct, it is nullfs vnode interlock -> lower vnode
interlock. vop_stdadd_writecount() is called from nullfs
VOP_ADD_WRITECOUNT() and both take interlocks.
Requested by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Modified:
head/sys/kern/vfs_default.c
Modified: head/sys/kern/vfs_default.c
==============================================================================
--- head/sys/kern/vfs_default.c Thu May 30 14:40:23 2019 (r348420)
+++ head/sys/kern/vfs_default.c Thu May 30 15:04:09 2019 (r348421)
@@ -1113,7 +1113,7 @@ vop_stdadd_writecount(struct vop_add_writecount_args *
int error;
vp = ap->a_vp;
- VI_LOCK(vp);
+ VI_LOCK_FLAGS(vp, MTX_DUPOK);
if (vp->v_writecount < 0) {
error = ETXTBSY;
} else {
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