Excerpts from David Sterba's message of 2011-06-24 11:58:20 -0400:
> On Thu, Jun 23, 2011 at 03:54:26PM -0400, Josef Bacik wrote:
> > A user reported this bug again where we have more bitmaps than we are
> > supposed
> > to. This is because we failed to load the free space cache, but don't
> > update
> > the ctl->total_bitmaps counter when we remove entries from the tree. This
> > patch
> > fixes this problem and we should be good to go again. Thanks,
> >
> > Signed-off-by: Josef Bacik <jo...@redhat.com>
> > ---
> > V1->V2: made the patch actually correct
> > fs/btrfs/free-space-cache.c | 6 +++++-
> > 1 files changed, 5 insertions(+), 1 deletions(-)
> >
> > diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
> > index 3c1a047..e7987f9 100644
> > --- a/fs/btrfs/free-space-cache.c
> > +++ b/fs/btrfs/free-space-cache.c
> > @@ -1843,7 +1843,11 @@ void __btrfs_remove_free_space_cache_locked(struct
> > btrfs_free_space_ctl *ctl)
> > while ((node = rb_last(&ctl->free_space_offset)) != NULL) {
> > info = rb_entry(node, struct btrfs_free_space, offset_index);
> > unlink_free_space(ctl, info);
> > - kfree(info->bitmap);
> > + if (info->bitmap) {
> > + kfree(info->bitmap);
> > + ctl->total_bitmaps--;
> > + ctl->op->recalc_thresholds(ctl);
> > + }
>
> this was a result of incorrect merge resolution in
> 0965537308ac3b267ea16e731bd73870a51c53b8:
Right, I missed this one up.
-chris
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