Re: [Qemu-devel] [PATCH] qcow2: Cache refcount blocks during snapshot creation

[Stefan Weil <weil@mail.berlios.de>]

Kevin Wolf schrieb:
> Nathan Froyd schrieb:
>> On Fri, Jun 26, 2009 at 08:19:38PM +0200, Kevin Wolf wrote:
>>> + if (s->refcount_block_cache_offset == 0) {
>>> + return 0;
>>> + }
>>> +
>>> + if (bdrv_pwrite(s->hd, s->refcount_block_cache_offset,
>>> + s->refcount_block_cache, size) != size)
>>> + {
>> Nit: bad formatting for opening brace here.
>
> Oh, I like nitpicking. The coding style says: "The opening brace is on
> the line that contains the control flow statement that introduces the
> new block". No way to conform here without breaking the 80 characters
> limit, so I did what I think is most reasonable. ;-)
>
> I guess you mean something like the following:
>
> if (bdrv_pwrite(s->hd, s->refcount_block_cache_offset,
> s->refcount_block_cache, size) != size) {
> do_it();
> }
>
> I don't like this very much because you can't see from the indentation
> where the condition ends and the "then" branch begins (which is
> different from a single-line condition). Maybe something to clarify in
> the coding style and I'll happily follow it then.
>
> Kevin
>
>
>

Or like this?

    if (bdrv_pwrite(s->hd, s->refcount_block_cache_offset,
                    s->refcount_block_cache, size) != size) {
        do_it();
    }


Stefan :-)