The patch titled
Fix failure to resume from initrds
has been added to the -mm tree. Its filename is
fix-failure-to-resume-from-initrds.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Fix failure to resume from initrds
From: Nigel Cunningham <nigel@xxxxxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxxxxx>
Acked-by: Rafael J. Wysocki <rjw@xxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
init/do_mounts_initrd.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff -puN init/do_mounts_initrd.c~fix-failure-to-resume-from-initrds init/do_mounts_initrd.c
--- a/init/do_mounts_initrd.c~fix-failure-to-resume-from-initrds
+++ a/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);
_
Patches currently in -mm which might be from nigel@xxxxxxxxxxxxxxxxxx are
fix-failure-to-resume-from-initrds.patch
freezer-document-relationship-with-memory-shrinking.patch
freezer-do-not-sync-filesystems-from-freeze_processes.patch
freezer-prevent-new-tasks-from-inheriting-tif_freeze-set.patch
freezer-introduce-freezer-firendly-waiting-macros.patch
freezer-do-not-send-signals-to-kernel-threads.patch
freezer-be-more-verbose.patch
-
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