From: Kevin Wolf <kwolf@redhat.com>
To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Fam Zheng <fam@euphon.net>,
oleksandr@redhat.com, Maxim Levitsky <maximlevitsky@gmail.com>,
qemu-block@nongnu.org, Markus Armbruster <armbru@redhat.com>,
Julia Suvorova <jusual@redhat.com>,
qemu-devel@nongnu.org, Max Reitz <mreitz@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Aarushi Mehta <mehta.aaru20@gmail.com>
Subject: Re: [PATCH v2 03/15] block/block: add BDRV flag for io_uring
Date: Mon, 11 Nov 2019 11:57:59 +0100 [thread overview]
Message-ID: <20191111105759.GB7297@linux.fritz.box> (raw)
In-Reply-To: <20191025160444.31632-4-stefanha@redhat.com>
Am 25.10.2019 um 18:04 hat Stefan Hajnoczi geschrieben:
> From: Aarushi Mehta <mehta.aaru20@gmail.com>
>
> Signed-off-by: Aarushi Mehta <mehta.aaru20@gmail.com>
> Reviewed-by: Maxim Levitsky <maximlevitsky@gmail.com>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
> include/block/block.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/include/block/block.h b/include/block/block.h
> index 89606bd9f8..bdb48dcd1b 100644
> --- a/include/block/block.h
> +++ b/include/block/block.h
> @@ -126,6 +126,7 @@ typedef struct HDGeometry {
> ignoring the format layer */
> #define BDRV_O_NO_IO 0x10000 /* don't initialize for I/O */
> #define BDRV_O_AUTO_RDONLY 0x20000 /* degrade to read-only if opening read-write fails */
> +#define BDRV_O_IO_URING 0x40000 /* use io_uring instead of the thread pool */
Why do we need a new (global!) flag rather than a driver-specific option
for file-posix? This looks wrong to me, the flag has no sensible meaning
for any other driver.
(Yes, BDRV_O_NATIVE_AIO is wrong, too, but compatibility means we can't
remove it easily.)
Kevin
next prev parent reply other threads:[~2019-11-11 10:59 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-25 16:04 [PATCH v2 00/15] io_uring: add Linux io_uring AIO engine Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 01/15] configure: permit use of io_uring Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 02/15] qapi/block-core: add option for io_uring Stefan Hajnoczi
2019-10-25 19:09 ` Markus Armbruster
2019-10-25 16:04 ` [PATCH v2 03/15] block/block: add BDRV flag " Stefan Hajnoczi
2019-11-11 10:57 ` Kevin Wolf [this message]
2019-11-11 16:25 ` Max Reitz
2019-11-13 11:42 ` Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 04/15] block/io_uring: implements interfaces " Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 05/15] stubs: add stubs for io_uring interface Stefan Hajnoczi
2019-11-11 11:13 ` Kevin Wolf
2019-11-13 11:42 ` Stefan Hajnoczi
2019-12-03 11:16 ` Stefan Hajnoczi
2019-12-03 14:28 ` Kevin Wolf
2019-12-03 15:55 ` Paolo Bonzini
2019-10-25 16:04 ` [PATCH v2 06/15] util/async: add aio interfaces for io_uring Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 07/15] blockdev: adds bdrv_parse_aio to use io_uring Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 08/15] block/file-posix.c: extend " Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 09/15] block: add trace events for io_uring Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 10/15] block/io_uring: adds userspace completion polling Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 11/15] qemu-io: adds option to use aio engine Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 12/15] qemu-img: adds option to use aio engine for benchmarking Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 13/15] qemu-nbd: adds option for aio engines Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 14/15] tests/qemu-iotests: enable testing with aio options Stefan Hajnoczi
2019-10-25 16:04 ` [PATCH v2 15/15] tests/qemu-iotests: use AIOMODE with various tests Stefan Hajnoczi
2019-11-04 10:32 ` [PATCH v2 00/15] io_uring: add Linux io_uring AIO engine Stefan Hajnoczi
2019-11-13 11:43 ` Stefan Hajnoczi
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