| Date | Thu, 31 Jan 2019 17:00:10 +0100 | From | David Sterba <> | Subject | Re: [PATCH 01/11] btrfs: add macros for compression type and level |
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On Mon, Jan 28, 2019 at 04:24:27PM -0500, Dennis Zhou wrote: > It is very easy to miss places that rely on a certain bitshifting for > decyphering the type_level overloading. Make macros handle this instead.
This encoding was a simple way to introduce the combined type and level for zlib and it could certainly be improved. Either we'll use helpers like you suggest or add a new structure that contains type and level as members. That way we'd see where the level still matters and where the just the type is ok.
I haven't checked how much intrusive this would be, so that's for later consideration. Some indirection can be removed for the .set_level callbacks as it does not necessarily need to be a function so I'm expecting that the code around that would be touched anyway.
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