From: Jens Axboe <axboe@kernel.dk>
To: Martijn Coenen <maco@android.com>, hch@lst.de, ming.lei@redhat.com
Cc: narayan@google.com, zezeozue@google.com, maco@google.com,
kernel-team@android.com, bvanassche@acm.org,
Chaitanya.Kulkarni@wdc.com, jaegeuk@kernel.org,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 00/11] Add a new LOOP_CONFIGURE ioctl
Date: Thu, 21 May 2020 08:21:01 -0600 [thread overview]
Message-ID: <fe0b7bf9-07b1-9025-f9d6-7ace03c89a1f@kernel.dk> (raw)
In-Reply-To: <20200513133845.244903-1-maco@android.com>
On 5/13/20 7:38 AM, Martijn Coenen wrote:
> This series introduces a new ioctl that makes it possible to atomically
> configure a loop device. Previously, if you wanted to set parameters
> such as the offset on a loop device, this required calling LOOP_SET_FD
> to set the backing file, and then LOOP_SET_STATUS to set the offset.
> However, in between these two calls, the loop device is available and
> would accept requests, which is generally not desirable. Similar issues
> exist around setting the block size (LOOP_SET_BLOCK_SIZE) and requesting
> direct I/O mode (LOOP_SET_DIRECT_IO).
>
> There are also performance benefits with combining these ioctls into
> one, which are described in more detail in the last change in the
> series.
Thanks, applied for 5.8.
--
Jens Axboe
prev parent reply other threads:[~2020-05-21 14:21 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-13 13:38 [PATCH v5 00/11] Add a new LOOP_CONFIGURE ioctl Martijn Coenen
2020-05-13 13:38 ` [PATCH v5 01/11] loop: Call loop_config_discard() only after new config is applied Martijn Coenen
2020-05-13 13:38 ` [PATCH v5 02/11] loop: Remove sector_t truncation checks Martijn Coenen
2020-05-13 13:45 ` Christoph Hellwig
2020-05-13 13:38 ` [PATCH v5 03/11] loop: Factor out setting loop device size Martijn Coenen
2020-05-13 13:38 ` [PATCH v5 04/11] loop: Switch to set_capacity_revalidate_and_notify() Martijn Coenen
2020-05-13 13:38 ` [PATCH v5 05/11] loop: Refactor loop_set_status() size calculation Martijn Coenen
2020-05-13 13:38 ` [PATCH v5 06/11] loop: Remove figure_loop_size() Martijn Coenen
2020-05-13 13:38 ` [PATCH v5 07/11] loop: Factor out configuring loop from status Martijn Coenen
2020-05-13 13:38 ` [PATCH v5 08/11] loop: Move loop_set_status_from_info() and friends up Martijn Coenen
2020-05-13 13:38 ` [PATCH v5 09/11] loop: Rework lo_ioctl() __user argument casting Martijn Coenen
2020-05-13 13:38 ` [PATCH v5 10/11] loop: Clean up LOOP_SET_STATUS lo_flags handling Martijn Coenen
2020-05-13 13:38 ` [PATCH v5 11/11] loop: Add LOOP_CONFIGURE ioctl Martijn Coenen
2021-06-11 22:54 ` Kristian Klausen
2020-05-21 14:21 ` Jens Axboe [this message]
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