git: 4c04226222e4 - stable/13 - getblk(): do not require devvp vnodes to be locked

The branch stable/13 has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=4c04226222e499a47dd89988bcbd6df1362c6f4f

commit 4c04226222e499a47dd89988bcbd6df1362c6f4f
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2021-11-01 07:14:01 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2021-11-19 04:25:28 +0000

    getblk(): do not require devvp vnodes to be locked
    
    (cherry picked from commit a7b4a54d2c02822d36bb51b1e4450e1bc14ba73a)
---
 sys/kern/vfs_bio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c
index 6ce445cbf2ee..1e58339446a9 100644
--- a/sys/kern/vfs_bio.c
+++ b/sys/kern/vfs_bio.c
@@ -3902,7 +3902,8 @@ getblkx(struct vnode *vp, daddr_t blkno, daddr_t dblkno, int size, int slpflag,
 	CTR3(KTR_BUF, "getblk(%p, %ld, %d)", vp, (long)blkno, size);
 	KASSERT((flags & (GB_UNMAPPED | GB_KVAALLOC)) != GB_KVAALLOC,
 	    ("GB_KVAALLOC only makes sense with GB_UNMAPPED"));
-	ASSERT_VOP_LOCKED(vp, "getblk");
+	if (vp->v_type != VCHR)
+		ASSERT_VOP_LOCKED(vp, "getblk");
 	if (size > maxbcachebuf)
 		panic("getblk: size(%d) > maxbcachebuf(%d)\n", size,
 		    maxbcachebuf);