Btrfs: free bitmaps properly when evicting the cache

If our space cache is wrong, we do the right thing and free up everything that
we loaded, however we don't reset the total_bitmaps counter or the thresholds or
anything.  So in btrfs_remove_free_space_cache make sure to call free_bitmap()
if it's a bitmap, this will keep us from panicing when we check to make sure we
don't have too many bitmaps.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Josef Bacik 2011-04-25 19:43:52 -04:00 коммит произвёл Chris Mason
Родитель f789b684bd
Коммит a4f0162fd4
1 изменённых файлов: 7 добавлений и 4 удалений

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@ -1768,10 +1768,13 @@ void btrfs_remove_free_space_cache(struct btrfs_block_group_cache *block_group)
while ((node = rb_last(&block_group->free_space_offset)) != NULL) {
info = rb_entry(node, struct btrfs_free_space, offset_index);
if (!info->bitmap) {
unlink_free_space(block_group, info);
if (info->bitmap)
kfree(info->bitmap);
kmem_cache_free(btrfs_free_space_cachep, info);
} else {
free_bitmap(block_group, info);
}
if (need_resched()) {
spin_unlock(&block_group->tree_lock);
cond_resched();