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PR/43439 CVS commit: src/sys/kern

The following reply was made to PR kern/43439; it has been noted by GNATS.

From: Juergen Hannken-Illjes <>
Subject: PR/43439 CVS commit: src/sys/kern
Date: Tue, 15 Jun 2010 09:43:37 +0000

 Module Name:   src
 Committed By:  hannken
 Date:          Tue Jun 15 09:43:37 UTC 2010
 Modified Files:
        src/sys/kern: vfs_syscalls.c
 Log Message:
 When mounting a file system re-lookup and lock the directory we mount on
 after the file system is setup by VFS_MOUNT().  This way recursive vnode
 locks are no longer needed here and mounts on null mounts no longer fail
 as described in PR #43439 (mount_null panic: lockdebug_wantlock: locking
 against myself).
 Based on a proposal from  and
 Reviewed by: David A. Holland <>
 To generate a diff of this commit:
 cvs rdiff -u -r1.404 -r1.405 src/sys/kern/vfs_syscalls.c
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

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