Re: [PATCH 7/7] btrfs: don't BUG_ON allocation errors in btrfs_drop_snapshot

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Excerpts from Tsutomu Itoh's message of 2011-07-18 20:07:44 -0400:
> Hi, Mark,
> 
> (2011/07/19 7:09), Mark Fasheh wrote:
> > On Fri, Jul 15, 2011 at 12:04:46PM +0900, Tsutomu Itoh wrote:
> >> (2011/07/15 7:15), Mark Fasheh wrote:
> >>> In addition to properly handling allocation failure from btrfs_alloc_path, I
> >>> also fixed up the kzalloc error handling code immediately below it.
> >>
> >> Need not you correct the caller of btrfs_drop_snapshot()?
> > 
> > Hmm, I don't think so - the only two callers of btrfs_drop_snapshot() are merge_reloc_roots() and
> > btrfs_clean_old_snapshots(). Both of which currently ignore the return code.
> 
> If you think so, I think that you should change the type of btrfs_drop_snapshot()
> into 'void'.

In both of these cases we should be forcing the FS readonly instead.

-chris
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