On Thu, Jan 21, 2016 at 04:37:13PM +0100, Karel Zak wrote:
> > David also wrote btrfs_get_default_subvolume_path(), but then we found,
> > that there is probably better to use subvolid and path saved in
> > procinfo:
>
> Do you mean /proc/self/mountinfo ?
>
> >
> > + The tab.c patch would be much smaller and straightforward.
> > - Kernel evaluates it when creating procinfo entries, this would
> > duplicate it.
> > x Both subvol and subvolid in procinfo were introduced together in the
> > mainline kernel, and btrfs_get_default_subvolume_path() needs more
> > ioctl() calls.
>
> No sure if I follow.
Read it and the patch again, and now it makes sense. Yes, the ioctl and
subvolid= from mountinfo seems better than dependence on libbtrfs.
Karel.
--
Karel Zak <kzak@xxxxxxxxxx>
http://karelzak.blogspot.com
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