ext2fs - Clear CNP_PDIRUNLOCK flag after a lookup.

vop_compat_nresolve() unlocks the vnode when flag CNP_PDIRUNLOCK
is set, so either we clear the flag or avoid unlocking the vnode
after an ext2_lookup().

DragonFly-bug: http://bugs.dragonflybsd.org/issues/2454

Reported by: Skylar Hawk

diff --git a/sys/gnu/vfs/ext2fs/ext2_lookup.c b/sys/gnu/vfs/ext2fs/ext2_lookup.c
index 0f69e3e..1dd68e1 100644 (file)
--- a/sys/gnu/vfs/ext2fs/ext2_lookup.c
+++ b/sys/gnu/vfs/ext2fs/ext2_lookup.c
@@ -658,8 +658,10 @@ found:
        } else {
                if ((error = VFS_VGET(vdp->v_mount, NULL, dp->i_ino, &tdp)) != 0)
                        return (error);
-               if (!lockparent)
+               if (!lockparent) {
                        vn_unlock(pdp);
+                       cnp->cn_flags |= CNP_PDIRUNLOCK;
+               }
                *vpp = tdp;
        }
        return (0);