From: Fam Zheng <famz@redhat.com>
To: Eric Blake <eblake@redhat.com>
Cc: qemu-devel@nongnu.org, kwolf@redhat.com, qemu-block@nongnu.org,
vsementsov@virtuozzo.com, Jeff Cody <jcody@redhat.com>,
Max Reitz <mreitz@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v6 04/20] gluster: Switch to .bdrv_co_block_status()
Date: Fri, 29 Dec 2017 10:42:43 +0800 [thread overview]
Message-ID: <20171229024243.GE13004@lemon> (raw)
In-Reply-To: <20171207203036.14993-5-eblake@redhat.com>
On Thu, 12/07 14:30, Eric Blake wrote:
> We are gradually moving away from sector-based interfaces, towards
> byte-based. Update the gluster driver accordingly.
>
> In want_zero mode, we continue to report fine-grained hole
> information (the caller wants as much mapping detail as possible);
> but when not in that mode, the caller prefers larger *pnum and
> merely cares about what offsets are allocated at this layer, rather
> than where the holes live. Since holes still read as zeroes at
> this layer (rather than deferring to a backing layer), we can take
> the shortcut of skipping find_allocation(), and merely state that
> all bytes are allocated.
>
> We can also drop redundant bounds checks that are already
> guaranteed by the block layer.
>
> Signed-off-by: Eric Blake <eblake@redhat.com>
>
Reviewed-by: Fam Zheng <famz@redhat.com>
next prev parent reply other threads:[~2017-12-29 2:42 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-07 20:30 [Qemu-devel] [PATCH v6 00/20] add byte-based block_status driver callbacks Eric Blake
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 01/20] block: Add .bdrv_co_block_status() callback Eric Blake
2017-12-09 10:15 ` Vladimir Sementsov-Ogievskiy
2017-12-09 13:26 ` Vladimir Sementsov-Ogievskiy
2017-12-29 2:35 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 02/20] block: Switch passthrough drivers to .bdrv_co_block_status() Eric Blake
2017-12-29 2:37 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 03/20] file-posix: Switch " Eric Blake
2017-12-09 11:52 ` Vladimir Sementsov-Ogievskiy
2017-12-29 2:41 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 04/20] gluster: " Eric Blake
2017-12-09 11:55 ` Vladimir Sementsov-Ogievskiy
2017-12-29 2:42 ` Fam Zheng [this message]
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 05/20] iscsi: Switch cluster_sectors to byte-based Eric Blake
2017-12-29 2:49 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 06/20] iscsi: Switch iscsi_allocmap_update() " Eric Blake
2017-12-29 3:25 ` Fam Zheng
2018-01-02 21:43 ` [Qemu-devel] [Qemu-block] " Jeff Cody
2018-01-02 22:36 ` Eric Blake
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 07/20] iscsi: Switch to .bdrv_co_block_status() Eric Blake
2017-12-29 3:20 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 08/20] null: " Eric Blake
2017-12-29 2:56 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 09/20] parallels: " Eric Blake
2017-12-09 12:31 ` Vladimir Sementsov-Ogievskiy
2017-12-09 16:39 ` Eric Blake
2017-12-11 9:14 ` Vladimir Sementsov-Ogievskiy
2017-12-11 15:24 ` Vladimir Sementsov-Ogievskiy
2017-12-12 16:32 ` Eric Blake
2017-12-12 16:49 ` Vladimir Sementsov-Ogievskiy
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 10/20] qcow: " Eric Blake
2017-12-29 3:00 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 11/20] qcow2: " Eric Blake
2017-12-29 3:01 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 12/20] qed: " Eric Blake
2017-12-29 3:06 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 13/20] raw: " Eric Blake
2017-12-29 3:07 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 14/20] sheepdog: " Eric Blake
2017-12-29 3:08 ` Fam Zheng
2018-01-02 21:52 ` Jeff Cody
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 15/20] vdi: Avoid bitrot of debugging code Eric Blake
2017-12-29 3:09 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 16/20] vdi: Switch to .bdrv_co_block_status() Eric Blake
2017-12-29 3:10 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 17/20] vmdk: " Eric Blake
2017-12-09 12:36 ` Vladimir Sementsov-Ogievskiy
2017-12-29 3:16 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 18/20] vpc: " Eric Blake
2017-12-09 13:42 ` Vladimir Sementsov-Ogievskiy
2017-12-29 2:55 ` Fam Zheng
2018-01-02 20:30 ` Eric Blake
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 19/20] vvfat: " Eric Blake
2017-12-29 3:26 ` Fam Zheng
2017-12-07 20:30 ` [Qemu-devel] [PATCH v6 20/20] block: Drop unused .bdrv_co_get_block_status() Eric Blake
2017-12-09 13:23 ` Vladimir Sementsov-Ogievskiy
2017-12-29 3:27 ` Fam Zheng
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