svn commit: r187655 - head/sys/kern
John Baldwin
jhb at FreeBSD.org
Fri Jan 23 14:13:30 PST 2009
Author: jhb
Date: Fri Jan 23 22:13:30 2009
New Revision: 187655
URL: http://svn.freebsd.org/changeset/base/187655
Log:
Use shared vnode locks for fchdir().
Submitted by: ups
Modified:
head/sys/kern/vfs_syscalls.c
Modified: head/sys/kern/vfs_syscalls.c
==============================================================================
--- head/sys/kern/vfs_syscalls.c Fri Jan 23 22:13:00 2009 (r187654)
+++ head/sys/kern/vfs_syscalls.c Fri Jan 23 22:13:30 2009 (r187655)
@@ -758,7 +758,7 @@ fchdir(td, uap)
VREF(vp);
fdrop(fp, td);
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
- vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
+ vn_lock(vp, LK_SHARED | LK_RETRY);
AUDIT_ARG(vnode, vp, ARG_VNODE1);
error = change_dir(vp, td);
while (!error && (mp = vp->v_mountedhere) != NULL) {
@@ -766,7 +766,7 @@ fchdir(td, uap)
if (vfs_busy(mp, 0))
continue;
tvfslocked = VFS_LOCK_GIANT(mp);
- error = VFS_ROOT(mp, LK_EXCLUSIVE, &tdp, td);
+ error = VFS_ROOT(mp, LK_SHARED, &tdp, td);
vfs_unbusy(mp);
if (error) {
VFS_UNLOCK_GIANT(tvfslocked);
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