Re: [PATCH 2/2] 9pfs: fix init_in_iov_from_pdu truncating size

[Christian Schoenebeck]

On Sonntag, 10. Mai 2020 19:18:21 CEST Christian Schoenebeck wrote:
> Commit SHA-1 16724a173049ac29c7b5ade741da93a0f46edff7 introduced
> truncating the response to the currently available transport buffer
> size, which was supposed to fix an 9pfs error on Xen boot where
> transport buffer might still be smaller than required for response.
> 
> Unfortunately this change broke small reads (with less than 12
> bytes).
> 
> To address both concerns, check the actual response type and only
> truncate reply for Rreaddir responses, and only if truncated reply
> would at least return one payload byte to client. Use Rreaddir's
> precise header size (11) for this instead of P9_IOHDRSZ.

Oops, that should have been "Rread's" of course, not "Rreaddir's". Apparently 
I already spent too much time on readdir() code.

If there's not more to do, then maybe you could just amend this log message 
typo Greg? I would appreciate it.

Best regards,
Christian Schoenebeck