[PATCH] swap: update swsusp use of swap_info

Aha, swsusp dips into swap_info[], better update it to swap_lock.  It's
bitflipping flags with 0xFF, so get_swap_page will allocate from only the one
chosen device: let's change that to flip SWP_WRITEOK.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 6 insertions, 6 deletions

diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index f2bc71b9fe8..975b1648a80 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -179,9 +179,9 @@ static int swsusp_swap_check(void) /* This is called before saving image */
         len=strlen(resume_file);
         root_swap = 0xFFFF;
 
-        swap_list_lock();
+        spin_lock(&swap_lock);
         for (i=0; i<MAX_SWAPFILES; i++) {
-                if (swap_info[i].flags == 0) {
+                if (!(swap_info[i].flags & SWP_WRITEOK)) {
                         swapfile_used[i]=SWAPFILE_UNUSED;
                 } else {
                         if (!len) {
@@ -202,7 +202,7 @@ static int swsusp_swap_check(void) /* This is called before saving image */
                         }
                 }
         }
-        swap_list_unlock();
+        spin_unlock(&swap_lock);
         return (root_swap != 0xffff) ? 0 : -ENODEV;
 }
 
@@ -216,12 +216,12 @@ static void lock_swapdevices(void)
 {
         int i;
 
-        swap_list_lock();
+        spin_lock(&swap_lock);
         for (i = 0; i< MAX_SWAPFILES; i++)
                 if (swapfile_used[i] == SWAPFILE_IGNORED) {
-                        swap_info[i].flags ^= 0xFF;
+                        swap_info[i].flags ^= SWP_WRITEOK;
                 }
-        swap_list_unlock();
+        spin_unlock(&swap_lock);
 }
 
 /**