[JFFS2] Fix suspend failure with JFFS2 GC thread.

The try_to_freeze() call was in the wrong place; we need it in the
signal-pending loop now that a pending freeze also makes
signal_pending() return true.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 143c5530caf35ab48446cc3fbe38c6ace0fac41d..504643f2e98b7c39817cbcea2f944332ccba459d 100644 (file)
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -84,7 +84,7 @@ static int jffs2_garbage_collect_thread(void *_c)
        set_freezable();
        for (;;) {
                allow_signal(SIGHUP);
-
+       again:
                if (!jffs2_thread_should_wake(c)) {
                        set_current_state (TASK_INTERRUPTIBLE);
                        D1(printk(KERN_DEBUG "jffs2_garbage_collect_thread sleeping...\n"));
@@ -95,9 +95,6 @@ static int jffs2_garbage_collect_thread(void *_c)
                        schedule();
                }
 
-               if (try_to_freeze())
-                       continue;
-
                /* This thread is purely an optimisation. But if it runs when
                   other things could be running, it actually makes things a
                   lot worse. Use yield() and put it at the back of the runqueue
@@ -112,6 +109,9 @@ static int jffs2_garbage_collect_thread(void *_c)
                        siginfo_t info;
                        unsigned long signr;
 
+                       if (try_to_freeze())
+                               goto again;
+
                        signr = dequeue_signal_lock(current, &current->blocked, &info);
 
                        switch(signr) {