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authorRafael J. Wysocki <rjw@sisk.pl>2006-03-23 03:00:03 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-23 07:38:07 -0800
commit6e1819d615f24ce0726a7d0bd3dd0152d7b21654 (patch)
treeabc68747446e8241a1a7103882b9f6b6e24fa274 /init/do_mounts_initrd.c
parent543cc27d09643640cbc34189c03a40beb8227aef (diff)
[PATCH] swsusp: userland interface
This patch introduces a user space interface for swsusp. The interface is based on a special character device, called the snapshot device, that allows user space processes to perform suspend and resume-related operations with the help of some ioctls and the read()/write() functions.  Additionally it allows these processes to allocate free swap pages from a selected swap partition, called the resume partition, so that they know which sectors of the resume partition are available to them. The interface uses the same low-level system memory snapshot-handling functions that are used by the built-it swap-writing/reading code of swsusp. The interface documentation is included in the patch. The patch assumes that the major and minor numbers of the snapshot device will be 10 (ie. misc device) and 231, the registration of which has already been requested. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'init/do_mounts_initrd.c')
-rw-r--r--init/do_mounts_initrd.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index a05cabd0fd1..405f9031af8 100644
--- a/init/do_mounts_initrd.c
+++ b/init/do_mounts_initrd.c
@@ -56,6 +56,7 @@ static void __init handle_initrd(void)
sys_chroot(".");
mount_devfs_fs ();
+ current->flags |= PF_NOFREEZE;
pid = kernel_thread(do_linuxrc, "/linuxrc", SIGCHLD);
if (pid > 0) {
while (pid != sys_wait4(-1, NULL, 0, NULL))