X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=fs%2Fubifs%2Fgc.c;h=02aba36fe3d4994ac6dbdba97d0705371cd8bf21;hb=725c25819e4a0dafdcf42a5f31bc569341919c7c;hp=d0f3dac2908133f1ea7398d8bac29ffbd5eaa8a8;hpb=2fb5e1e101d1b1c9a1aeca7ad99a02b49241ba7b;p=mv-sheeva.git

diff --git a/fs/ubifs/gc.c b/fs/ubifs/gc.c
index d0f3dac2908..02aba36fe3d 100644
--- a/fs/ubifs/gc.c
+++ b/fs/ubifs/gc.c
@@ -334,15 +334,21 @@ int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp)
 
 		err = move_nodes(c, sleb);
 		if (err)
-			goto out;
+			goto out_inc_seq;
 
 		err = gc_sync_wbufs(c);
 		if (err)
-			goto out;
+			goto out_inc_seq;
 
 		err = ubifs_change_one_lp(c, lnum, c->leb_size, 0, 0, 0, 0);
 		if (err)
-			goto out;
+			goto out_inc_seq;
+
+		/* Allow for races with TNC */
+		c->gced_lnum = lnum;
+		smp_wmb();
+		c->gc_seq += 1;
+		smp_wmb();
 
 		if (c->gc_lnum == -1) {
 			c->gc_lnum = lnum;
@@ -363,6 +369,14 @@ int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp)
 out:
 	ubifs_scan_destroy(sleb);
 	return err;
+
+out_inc_seq:
+	/* We may have moved at least some nodes so allow for races with TNC */
+	c->gced_lnum = lnum;
+	smp_wmb();
+	c->gc_seq += 1;
+	smp_wmb();
+	goto out;
 }
 
 /**