From: David Woodhouse <dwmw2@infradead.org>
Date: Thu, 28 Jun 2007 18:49:36 +0000 (+0100)
Subject: [JFFS2] Fix suspend failure with JFFS2 GC thread.
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7b687707d769112aee220bafd50fa113363717ff;p=openwrt%2Fstaging%2Fblogic.git

[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 143c5530caf3..504643f2e98b 100644
--- 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) {