Re: [PATCH 1/2] Btrfs-progs: remove duplicated code in cmds-restore.c

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On 7/10/13 11:12 AM, David Sterba wrote:
> On Tue, Jul 09, 2013 at 07:49:53PM +0100, Filipe David Borba Manana wrote:
>> The module cmds-restore.c was defining its own next_leaf()
>> function, which did exactly the same as btrfs_next_leaf()
>> from ctree.c.
> 
> This has been removed by Eric's patch present in the integration
> branches:
>  Btrfs-progs: remove cut & paste btrfs_next_leaf from restore
> http://www.spinics.net/lists/linux-btrfs/msg24477.html
> 
> but now Chris has a fix in the master branch,
>  btrfs-restore: deal with NULL returns from read_node_slot
> https://git.kernel.org/cgit/linux/kernel/git/mason/btrfs-progs.git/commit/?id=194aa4a1bd6447bb545286d0bcb0b0be8204d79f

Just noticed this.  :(

Is there some reason that kernelspace should not also get Chris' fix, though?

> the code of updated next_leaf is not identical to btrfs_next_leaf and I
> think 'restore' could be more tolerant to partially corrupted
> structures, so both functions could make sense in the end.

Surely kernelspace should be at least as tolerant as userspace; it
it seems like Chris's BUG_ON removal patch could benefit kernelspace too, no?

And then we could take one more baby step towards a cleaner, non-
cut-and-pasted codebase.

-Eric

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