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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>
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