Re: [Qemu-devel] [RFC PATCH 14/17] block: support FALLOC_FL_PUNCH_HOLE trimming

[Paolo Bonzini]

Il 09/03/2012 11:53, Stefan Hajnoczi ha scritto:
> 
>> > 1) require a new-enough kernel and only use fallocate; return a NULL
>> > aiocb if !has_discard and convert it to ENOTSUP.
>> >
>> > 2) extract now from my threads branch the work to generalize
>> > posix-aio-compat into a more flexible threadpool, and move the AIO code
>> > back to block/raw-posix.c.
> 3) Add discard to posix-aio-compat.c as an AIO request?

That would be (1) or you would need to pass down is_xfs.

Paolo