[PATCH] swsusp: do not trigger BUG_ON() if there is not enough memory

The following patch makes swsusp avoid triggering the BUG_ON() in
swsusp_suspend() if there is not enough memory for suspend.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index d967e875ee82f974d9f4e8e365aa59270a6f5c61..353f37f1ba286673f843d71edf32a351d518df82 100644 (file)
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -918,6 +918,7 @@ static int swsusp_alloc(void)
 
        pagedir_nosave = NULL;
        nr_copy_pages = calc_nr(nr_copy_pages);
+       nr_copy_pages_check = nr_copy_pages;
 
        pr_debug("suspend: (pages needed: %d + %d free: %d)\n",
                 nr_copy_pages, PAGES_FOR_IO, nr_free_pages());
@@ -940,7 +941,6 @@ static int swsusp_alloc(void)
                return error;
        }
 
-       nr_copy_pages_check = nr_copy_pages;
        return 0;
 }