Re: Read O_DIRECT regression in 3.7-rc8 (bisected)

From: Linus Torvalds
Date: Fri Dec 07 2012 - 19:57:51 EST




On Fri, 7 Dec 2012, Linus Torvalds wrote:
>
> This (TOTALLY UNTESTED) patch adds it the same iov_shorten() logic that
> the write side has. It does it differently (in fs/block_dev.c rather than
> in mm/filemap.c), but I actually suspect this is a nicer way to do it, and
> maybe we should do the write side truncation this way too.

Ok, rebooted and tested with your test-case, and it seems to work fine.
But I presume that you actually found the problem some other way, so you'd
want to verify that it fixes whatever original bigger issue you hit.

Thanks,
Linus
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