Re: [PATCH v2] btrfs-progs: calculate disk space that a subvol could free

[Anand Jain]

> If we want to speed up this progress, i think we can split it into two parts:
> 
> 1. First to search inline extent_data
> 2. Secondly search in extent tree to calculate (extent refs=1)
> 
> This will avoid n*n rather than n+n which is better…

  (sorry for delay in reply, I was on vacation).

  Thanks for what might help. I was kind of expecting
  this when preliminary patch was sent before. Let me
  try what you suggest and send out v3.

  I was also thinking if this should be inside kernel
  facilitated by a new ioctl? so that we avoid number
  of search ioctl thats required.

Thanks, Anand

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