Josef Bacik wrote (ao):
> This patch series introduces the ability for btrfs to store the free space
> cache
> ondisk to make the caching of a block group much quicker. Previously we had
> to
> search the entire extent-tree to look for gaps everytime we wanted to allocate
> in a block group. This approach instead dumps all of the free space cache to
> disk for every dirtied block group each time we commit the transaction. This
> is
> a disk format change, but in order to use the feature you will have to mount
> with -o space_cache, and then from then on you won't be able to use old
> kernels
> with your filesystem.
Will this go into a future version of btrfs?
If so, would it make sense to include other changes that would require a
format change?
Sander
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