From: Christoph Hellwig <hch@infradead.org>
To: Goldwyn Rodrigues <rgoldwyn@suse.de>
Cc: linux-fsdevel@vger.kernel.org, jack@suse.com, hch@infradead.org,
linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org,
linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org,
sagi@grimberg.me, avi@scylladb.com, axboe@kernel.dk,
linux-api@vger.kernel.org, willy@infradead.org,
tom.leiming@gmail.com, Goldwyn Rodrigues <rgoldwyn@suse.com>
Subject: Re: [PATCH 5/9] nowait aio: return on congested block device
Date: Wed, 12 Apr 2017 01:36:25 -0700 [thread overview]
Message-ID: <20170412083625.GB22363@infradead.org> (raw)
In-Reply-To: <20170411142619.27205-6-rgoldwyn@suse.de>
As mentioned last time around, this should be a REQ_NOWAIT flag so
that it can be easily passed down to the request layer.
> +static inline void bio_wouldblock_error(struct bio *bio)
> +{
> + bio->bi_error = -EAGAIN;
> + bio_endio(bio);
> +}
Please skip this helper..
> +#define QUEUE_FLAG_NOWAIT 28 /* queue supports BIO_NOWAIT */
Please make the flag name a little more descriptive, this sounds like
it will never wait.
next prev parent reply other threads:[~2017-04-12 8:36 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-11 14:26 [PATCH 0/9 v5] No wait AIO Goldwyn Rodrigues
2017-04-11 14:26 ` [PATCH 1/9] Use RWF_* flags for AIO operations Goldwyn Rodrigues
[not found] ` <20170411142619.27205-2-rgoldwyn-l3A5Bk7waGM@public.gmane.org>
2017-04-12 8:33 ` Christoph Hellwig
2017-04-11 14:26 ` [PATCH 2/9] nowait aio: Introduce RWF_NOWAIT Goldwyn Rodrigues
2017-04-11 14:26 ` [PATCH 3/9] nowait aio: return if direct write will trigger writeback Goldwyn Rodrigues
2017-04-11 14:26 ` [PATCH 4/9] nowait-aio: Introduce IOMAP_NOWAIT Goldwyn Rodrigues
2017-04-11 14:26 ` [PATCH 5/9] nowait aio: return on congested block device Goldwyn Rodrigues
2017-04-12 8:36 ` Christoph Hellwig [this message]
2017-04-12 18:31 ` Goldwyn Rodrigues
2017-04-11 14:26 ` [PATCH 6/9] nowait aio: ext4 Goldwyn Rodrigues
2017-04-11 14:26 ` [PATCH 7/9] nowait aio: xfs Goldwyn Rodrigues
2017-04-11 14:26 ` [PATCH 8/9] nowait aio: btrfs Goldwyn Rodrigues
2017-04-11 14:26 ` [PATCH 9/9] nowait aio: Return -EOPNOTSUPP if filesystem does not support Goldwyn Rodrigues
2017-04-12 8:37 ` Christoph Hellwig
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