From: Christoph Hellwig <hch@infradead.org>
To: Mike Snitzer <snitzer@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Jens Axboe <axboe@kernel.dk>,
dm-devel@redhat.com, Joe Thornber <ejt@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH for-4.2 04/14] block: factor out blkdev_issue_discard_async
Date: Tue, 19 May 2015 01:32:00 -0700 [thread overview]
Message-ID: <20150519083200.GA31648@infradead.org> (raw)
In-Reply-To: <20150518191830.GA15656@redhat.com>
On Mon, May 18, 2015 at 03:18:30PM -0400, Mike Snitzer wrote:
> > And besides that generic high level sentiment I think the interface
> > for blkdev_issue_discard_async is simply wrong. Either you want to keep
> > the internals private and just expose a completion callback that gets
> > your private data and an error, or you want to build your own bios as
> > suggested above. But not one that is mostly opaque except for allowing
> > the caller to hook into the submission process and thus taking over I/O
> > completion.
>
> I'll see what I can come up with.
Another option would be to help with reviewing and testing this
series: http://thread.gmane.org/gmane.linux.kernel/1947453
If we can get thast one in the submitter doesn't have to care
about aligning or splitting discard (or any other) bios.
next prev parent reply other threads:[~2015-05-19 8:32 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-14 21:04 [PATCH for-4.2 00/14] block, dm: first batch of changes for 4.2 Mike Snitzer
2015-05-14 21:04 ` [PATCH for-4.2 01/14] block: remove management of bi_remaining when restoring original bi_end_io Mike Snitzer
2015-05-18 7:22 ` Jan Kara
2015-05-18 13:13 ` Mike Snitzer
2015-05-18 15:36 ` Jan Kara
2015-05-18 15:59 ` Mike Snitzer
2015-05-18 20:40 ` [PATCH for-4.2 v2 " Mike Snitzer
2015-05-19 6:28 ` Christoph Hellwig
2015-05-19 7:20 ` Jan Kara
2015-05-18 8:24 ` [dm-devel] [PATCH for-4.2 " Christoph Hellwig
2015-05-18 13:20 ` Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 02/14] block: remove export for blk_queue_bio Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 03/14] block, dm: don't copy bios for request clones Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 04/14] block: factor out blkdev_issue_discard_async Mike Snitzer
2015-05-18 8:27 ` [dm-devel] " Christoph Hellwig
2015-05-18 13:32 ` Mike Snitzer
2015-05-18 16:17 ` [dm-devel] " Christoph Hellwig
2015-05-18 19:18 ` Mike Snitzer
2015-05-19 8:32 ` Christoph Hellwig [this message]
2015-05-14 21:05 ` [PATCH for-4.2 05/14] dm: do not allocate any mempools for blk-mq request-based DM Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 06/14] dm: rename methods that requeue requests Mike Snitzer
2015-05-18 8:29 ` Christoph Hellwig
2015-05-18 15:44 ` Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 07/14] dm: factor out a common cleanup_mapped_device() Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 08/14] dm btree: add dm_btree_remove_leaves() Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 09/14] dm thin metadata: add dm_thin_find_mapped_range() Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 10/14] dm thin metadata: add dm_thin_remove_range() Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 11/14] dm thin: range discard support Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 12/14] dm thin: cleanup overwrite's endio restore to be centralized Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 13/14] dm thin: cleanup schedule_zero() to read more logically Mike Snitzer
2015-05-14 21:05 ` [PATCH for-4.2 14/14] dm thin metadata: remove in-core 'read_only' flag Mike Snitzer
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