Freezer: Fix s2disk resume from initrd
Add appropriate freezer annotations to handle_initrd(), so that it's possible
to resume from disk from an initrd.
http://bugzilla.kernel.org/show_bug.cgi?id=9345
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Nigel Cunningham <nigel@nigel.suspend2.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Chris Friedhoff <chris@friedhoff.org>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index fd4fc12..614241b 100644
--- a/init/do_mounts_initrd.c
+++ b/init/do_mounts_initrd.c
@@ -55,12 +55,18 @@
sys_mount(".", "/", NULL, MS_MOVE, NULL);
sys_chroot(".");
+ /*
+ * In case that a resume from disk is carried out by linuxrc or one of
+ * its children, we need to tell the freezer not to wait for us.
+ */
+ current->flags |= PF_FREEZER_SKIP;
+
pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD);
if (pid > 0)
- while (pid != sys_wait4(-1, NULL, 0, NULL)) {
- try_to_freeze();
+ while (pid != sys_wait4(-1, NULL, 0, NULL))
yield();
- }
+
+ current->flags &= ~PF_FREEZER_SKIP;
/* move initrd to rootfs' /old */
sys_fchdir(old_fd);