From 019ad4a0a60b09022945273848b5a686e39a78aa Mon Sep 17 00:00:00 2001 From: Nigel Cunningham Date: Tue, 18 Sep 2007 22:46:25 -0700 Subject: [PATCH] Fix failure to resume from initrds Commit 831441862956fffa17b9801db37e6ea1650b0f69 (Freezer: make kernel threads nonfreezable by default) breaks freezing when attempting to resume from an initrd, because the init (which is freezeable) spins while waiting for another thread to run /linuxrc, but doesn't check whether it has been told to enter the refrigerator. The original patch replaced a call to try_to_freeze() with a call to yield(). I believe a simple reversion is wrong because if !CONFIG_PM_SLEEP, try_to_freeze() is a noop. It should still yield. Signed-off-by: Nigel Cunningham Acked-by: Rafael J. Wysocki Acked-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- init/do_mounts_initrd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index a6b4c0c08e13..fd4fc12d2624 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -57,8 +57,10 @@ static void __init handle_initrd(void) pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD); if (pid > 0) - while (pid != sys_wait4(-1, NULL, 0, NULL)) + while (pid != sys_wait4(-1, NULL, 0, NULL)) { + try_to_freeze(); yield(); + } /* move initrd to rootfs' /old */ sys_fchdir(old_fd); -- 2.20.1