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authorNigel Cunningham <nigel@nigel.suspend2.net>2007-09-18 22:46:25 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-09-19 11:24:17 -0700
commit019ad4a0a60b09022945273848b5a686e39a78aa (patch)
treea54186525fec26bf6f1383d5756a879a09cf221e /init/do_mounts_initrd.c
parent2c392a4f47f41b24432e6aa77bb5167d0bbb10c5 (diff)
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 <nigel@nigel.suspend2.net> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init/do_mounts_initrd.c')
-rw-r--r--init/do_mounts_initrd.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index a6b4c0c08e1..fd4fc12d262 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);