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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Tue, 8 Sep 2009 09:17:34 +0000 (UTC)
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Subject: svn commit: r196966 - head/sys/cddl/compat/opensolaris/kern
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Author: kib
Date: Tue Sep  8 09:17:34 2009
New Revision: 196966
URL: http://svn.freebsd.org/changeset/base/196966

Log:
  Lock Giant around vn_open_cred().
  Remove innocent unnecessary call to NDFREE().
  
  Reported by:	marcel
  Reviewed and tested by:	pjd
  MFC after:	3 days

Modified:
  head/sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c

Modified: head/sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c
==============================================================================
--- head/sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c	Tue Sep  8 08:54:15 2009	(r196965)
+++ head/sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c	Tue Sep  8 09:17:34 2009	(r196966)
@@ -69,7 +69,7 @@ kobj_open_file_vnode(const char *file)
 	struct thread *td = curthread;
 	struct filedesc *fd;
 	struct nameidata nd;
-	int error, flags;
+	int error, flags, vfslocked;
 
 	fd = td->td_proc->p_fd;
 	FILEDESC_XLOCK(fd);
@@ -86,11 +86,13 @@ kobj_open_file_vnode(const char *file)
 	flags = FREAD | O_NOFOLLOW;
 	NDINIT(&nd, LOOKUP, MPSAFE, UIO_SYSSPACE, file, td);
 	error = vn_open_cred(&nd, &flags, 0, 0, curthread->td_ucred, NULL);
-	NDFREE(&nd, NDF_ONLY_PNBUF);
 	if (error != 0)
 		return (NULL);
+	vfslocked = NDHASGIANT(&nd);
+	NDFREE(&nd, NDF_ONLY_PNBUF);
 	/* We just unlock so we hold a reference. */
 	VOP_UNLOCK(nd.ni_vp, 0);
+	VFS_UNLOCK_GIANT(vfslocked);
 	return (nd.ni_vp);
 }