git: 303d3ae7e841 - main - ufs, msdosfs: do not record witness order when creating vnode

The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=303d3ae7e8419b457078598b8569e57a5e3fb5ce

commit 303d3ae7e8419b457078598b8569e57a5e3fb5ce
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2022-02-01 05:16:30 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2022-02-01 08:51:55 +0000

    ufs, msdosfs: do not record witness order when creating vnode
    
    When allocating new vnode, we need to lock it exclusively before
    making it externally visible.  Since other threads cannot observe the
    vnode yet, current lock order cannot create LoR conditions.
    
    Reviewed by:    mckusick
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week
    Differential revision:  https://reviews.freebsd.org/D34126
---
 sys/fs/msdosfs/msdosfs_denode.c | 2 +-
 sys/ufs/ffs/ffs_vfsops.c        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/fs/msdosfs/msdosfs_denode.c b/sys/fs/msdosfs/msdosfs_denode.c
index 70b574e48e4b..408c96981481 100644
--- a/sys/fs/msdosfs/msdosfs_denode.c
+++ b/sys/fs/msdosfs/msdosfs_denode.c
@@ -181,7 +181,7 @@ badoff:
 	ldep->de_diroffset = diroffset;
 	ldep->de_inode = inode;
 	cluster_init_vn(&ldep->de_clusterw);
-	lockmgr(nvp->v_vnlock, LK_EXCLUSIVE, NULL);
+	lockmgr(nvp->v_vnlock, LK_EXCLUSIVE | LK_NOWITNESS, NULL);
 	VN_LOCK_AREC(nvp);	/* for doscheckpath */
 	fc_purge(ldep, 0);	/* init the FAT cache for this denode */
 	error = insmntque(nvp, mntp);
diff --git a/sys/ufs/ffs/ffs_vfsops.c b/sys/ufs/ffs/ffs_vfsops.c
index 131bdc33f427..a2a361e813e4 100644
--- a/sys/ufs/ffs/ffs_vfsops.c
+++ b/sys/ufs/ffs/ffs_vfsops.c
@@ -1891,7 +1891,7 @@ ffs_vgetf(mp, ino, flags, vpp, ffs_flags)
 	/*
 	 * FFS supports recursive locking.
 	 */
-	lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL);
+	lockmgr(vp->v_vnlock, LK_EXCLUSIVE | LK_NOWITNESS, NULL);
 	VN_LOCK_AREC(vp);
 	vp->v_data = ip;
 	vp->v_bufobj.bo_bsize = fs->fs_bsize;