Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6

[pandora-kernel.git] / fs / jffs2 / build.c

diff --git a/fs/jffs2/build.c b/fs/jffs2/build.c
index 07119c4..722a6b6 100644 (file)
--- a/fs/jffs2/build.c
+++ b/fs/jffs2/build.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: build.c,v 1.85 2005/11/07 11:14:38 gleixner Exp $
- *
  */
 
 #include <linux/kernel.h>
@@ -287,6 +285,14 @@ static void jffs2_calc_trigger_levels(struct jffs2_sb_info *c)
           than actually making progress? */
        c->resv_blocks_gcbad = 0;//c->resv_blocks_deletion + 2;
 
+       /* What number of 'very dirty' eraseblocks do we allow before we
+          trigger the GC thread even if we don't _need_ the space. When we
+          can't mark nodes obsolete on the medium, the old dirty nodes cause
+          performance problems because we have to inspect and discard them. */
+       c->vdirty_blocks_gctrigger = c->resv_blocks_gctrigger;
+       if (jffs2_can_mark_obsolete(c))
+               c->vdirty_blocks_gctrigger *= 10;
+
        /* If there's less than this amount of dirty space, don't bother
           trying to GC to make more space. It'll be a fruitless task */
        c->nospc_dirty_size = c->sector_size + (c->flash_size / 100);
@@ -305,6 +311,8 @@ static void jffs2_calc_trigger_levels(struct jffs2_sb_info *c)
                  c->resv_blocks_gcbad, c->resv_blocks_gcbad*c->sector_size/1024);
        dbg_fsbuild("Amount of dirty space required to GC: %d bytes\n",
                  c->nospc_dirty_size);
+       dbg_fsbuild("Very dirty blocks before GC triggered: %d\n",
+                 c->vdirty_blocks_gctrigger);
 }
 
 int jffs2_do_mount_fs(struct jffs2_sb_info *c)