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Date: Mon, 22 Aug 2022 09:14:59 +0000
From: "Juergen Hannken-Illjes" <hannken@netbsd.org>
Subject: CVS commit: src/sys/kern
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Module Name:	src
Committed By:	hannken
Date:		Mon Aug 22 09:14:59 UTC 2022

Modified Files:
	src/sys/kern: vfs_lookup.c

Log Message:
Use fstrans_start()/fstrans_done() to cross the mount in lookup_crossmount().
It is sufficient here as it prevents the file system from unmount and
makes it safe to use VFS_ROOT() here.

Removes a rare deadlock where one thread has "foundobj" locked and waits
for "foundobj->v_mountedhere" to resume while the thread holding the file
system suspended tries to lookup a node and needs a lock on "foundobj".


To generate a diff of this commit:
cvs rdiff -u -r1.231 -r1.232 src/sys/kern/vfs_lookup.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.