[XFS] Resolve an issue with xfsbufd not getting along with swsusp.

SGI Modid: xfs-linux:xfs-kern:22342a

Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Christoph Hellwig <hch@sgi.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 23e0eb67fc25..997963e53622 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -1746,13 +1746,15 @@ STATIC DECLARE_COMPLETION(pagebuf_daemon_done);
 STATIC struct task_struct *pagebuf_daemon_task;
 STATIC int pagebuf_daemon_active;
 STATIC int force_flush;
-
+STATIC int force_sleep;
 
 STATIC int
 pagebuf_daemon_wakeup(
         int                     priority,
         unsigned int            mask)
 {
+        if (force_sleep)
+                return 0;
         force_flush = 1;
         barrier();
         wake_up_process(pagebuf_daemon_task);
@@ -1778,7 +1780,12 @@ pagebuf_daemon(
 
         INIT_LIST_HEAD(&tmp);
         do {
-                try_to_freeze(PF_FREEZE);
+                if (unlikely(current->flags & PF_FREEZE)) {
+                        force_sleep = 1;
+                        refrigerator(PF_FREEZE);
+                } else {
+                        force_sleep = 0;
+                }
 
                 set_current_state(TASK_INTERRUPTIBLE);
                 schedule_timeout((xfs_buf_timer_centisecs * HZ) / 100);