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Date:      Fri, 13 Jun 2025 19:20:15 GMT
From:      Mark Johnston <markj@FreeBSD.org>
To:        src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org
Subject:   git: 5defdd5342c3 - main - p9fs: Call VN_LOCK_ASHARE on new vnodes
Message-ID:  <202506131920.55DJKFLD006877@gitrepo.freebsd.org>

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The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=5defdd5342c392880e3917ba0873fb49ddafc4c6

commit 5defdd5342c392880e3917ba0873fb49ddafc4c6
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2025-06-13 19:08:09 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2025-06-13 19:19:59 +0000

    p9fs: Call VN_LOCK_ASHARE on new vnodes
    
    We set MNTK_LOOKUP_SHARED on p9fs mounts, but disable shared locking of
    vnodes (i.e., LK_SHARED requests are automatically translated to
    LK_EXCLUSIVE.
    
    Reviewed by:    kib
    Sponsored by:   Klara, Inc.
    Differential Revision:  https://reviews.freebsd.org/D50759
---
 sys/fs/p9fs/p9fs_vfsops.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/fs/p9fs/p9fs_vfsops.c b/sys/fs/p9fs/p9fs_vfsops.c
index f674c866ce9d..3451bc052187 100644
--- a/sys/fs/p9fs/p9fs_vfsops.c
+++ b/sys/fs/p9fs/p9fs_vfsops.c
@@ -345,6 +345,8 @@ p9fs_vget_common(struct mount *mp, struct p9fs_node *np, int flags,
 	P9FS_SET_LINKS(inode);
 
 	lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL);
+	if (vp->v_type != VFIFO)
+		VN_LOCK_ASHARE(vp);
 	error = insmntque(vp, mp);
 	if (error != 0) {
 		/*



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