From: Christoph Hellwig <hch@infradead.org>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: hch@infradead.org, axboe@kernel.dk, matthew@wil.cx,
linux-scsi@vger.kernel.org
Subject: Re: [PATCH 1/2] block: Expose discard granularity
Date: Fri, 30 Oct 2009 01:07:19 -0400 [thread overview]
Message-ID: <20091030050719.GD17714@infradead.org> (raw)
In-Reply-To: <1256873409-12668-2-git-send-email-martin.petersen@oracle.com>
On Thu, Oct 29, 2009 at 11:30:08PM -0400, Martin K. Petersen wrote:
> + * blk_queue_discard_granularity - set minimum size for discard requests
> + * @q: the request queue for the device
> + * @gran: the smallest unit the device can discard (in bytes)
> + *
> + * Description:
> + */
> +void blk_queue_discard_granularity(struct request_queue *q, unsigned int gran)
> +{
> + q->limits.discard_granularity = gran;
> +}
> +EXPORT_SYMBOL(blk_queue_discard_granularity);
> +
> +static inline unsigned int queue_discard_granularity(struct request_queue *q)
> +{
> + return q->limits.discard_granularity;
> +}
> +
> +static inline unsigned int queue_max_discard_sectors(struct request_queue *q)
> +{
> + return q->limits.max_discard_sectors;
> +}
> +
Btw, I really hate these wrapper, they make followign the code much
harder. Already annoyed me for the I/O topology bits.
next prev parent reply other threads:[~2009-10-30 5:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-30 3:30 [RFC] Thin provisioning bits Martin K. Petersen
2009-10-30 3:30 ` [PATCH 1/2] block: Expose discard granularity Martin K. Petersen
2009-10-30 5:07 ` Christoph Hellwig [this message]
2009-11-02 13:31 ` Martin K. Petersen
2009-11-03 15:12 ` Christoph Hellwig
2009-11-03 19:08 ` Jens Axboe
2009-10-30 3:30 ` [PATCH 2/2] sd: WRITE SAME(16) / UNMAP support Martin K. Petersen
2009-10-30 4:28 ` Douglas Gilbert
2009-10-30 4:53 ` Martin K. Petersen
2009-10-30 16:02 ` Ric Wheeler
2009-10-30 5:11 ` Christoph Hellwig
2009-11-02 13:32 ` Martin K. Petersen
2009-11-03 15:12 ` Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2009-11-04 4:25 Thin provisioning update Martin K. Petersen
2009-11-04 4:25 ` [PATCH 1/2] block: Expose discard granularity Martin K. Petersen
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