[PATCH] JFFS2: Erase max 3 EB's in jffs2_write_super()

[Joakim Tjernlund]

Ping?

Joakim Tjernlund <Joakim.Tjernlund at transmode.se> wrote on 2010/02/02 10:40:00:
>
> Deleting big files in a JFFS2 root FS and the rebooting makes
> the system hang until all freed EB's has been erased which
> can take several minutes.
> Fix the hanging by making jffs2_write_super() erase max 3 EB's
> at a time. If there are more EB's to erase afterwards, reset the
> s_dirty flag.
>
> Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund at transmode.se>
> ---
>
>  I hope the list_empty calls doesn't need locking. If
>  so, it can easily be added.
>
>  fs/jffs2/super.c |    5 ++++-
>  1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
> index 9a80e8e..10393e0 100644
> --- a/fs/jffs2/super.c
> +++ b/fs/jffs2/super.c
> @@ -64,7 +64,10 @@ static void jffs2_write_super(struct super_block *sb)
>     if (!(sb->s_flags & MS_RDONLY)) {
>        D1(printk(KERN_DEBUG "jffs2_write_super()\n"));
>        jffs2_garbage_collect_trigger(c);
> -      jffs2_erase_pending_blocks(c, 0);
> +      jffs2_erase_pending_blocks(c, 3);
> +      if (!list_empty(&c->erase_complete_list) ||
> +          !list_empty(&c->erase_pending_list))
> +         sb->s_dirt = 1;
>        jffs2_flush_wbuf_gc(c, 0);
>     }
>
> --
> 1.6.4.4
>