Re: [PATCH v2] direct-io: only inc/dec inode->i_dio_count for file systems

[Jens Axboe]

On 04/15/2015 04:05 PM, Al Viro wrote:
> On Wed, Apr 15, 2015 at 04:01:35PM -0600, Jens Axboe wrote:
> > Hi,
> >
> > A proper patch series posting of the patch to skip inode dio counts
> > where we don't need them. Performance results and general notes in
> > patch #1. We can take this a bit further if we want to push this
> > truncate locking into the caller, but I'd like to keep that as a
> > separate patch series instead.
> >
> > Changes since v2:
> >
> > - Changed flag to DIO_SKIP_DIO_COUNT. Patch 2+3 will use this for
> >    skipping the extra inc/dec for btrfs and ext4, so better rename it
> >    to something that better tells what is happening in the deep mess
> >    that is dio.
> >
> > - Have inode_dio_inc/dec() helpers. Again, this better tells the caller
> >    what is going on.
>
> Please, rebase on vfs.git#for-next; it conflicts (at least) with Omar's
> ->direct_IO() patches, if not with generic_write_checks() ones following
> those.

Sure, I can do that.

--
Jens Axboe

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