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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>
This commit is contained in:
Rafael J. Wysocki 2007-11-21 02:50:17 +01:00 committed by Len Brown
parent 2ffbb8377c
commit 8baabde66c
1 changed files with 9 additions and 3 deletions
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12
init/do_mounts_initrd.c
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@ -55,12 +55,18 @@ static void __init handle_initrd(void)
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);