From: Randy Dunlap <rdunlap@infradead.org>
To: Sergei Shtepa <sergei.shtepa@veeam.com>,
axboe@kernel.dk, viro@zeniv.linux.org.uk, hch@infradead.org,
darrick.wong@oracle.com, linux-xfs@vger.kernel.org,
linux-fsdevel@vger.kernel.org, rjw@rjwysocki.net,
len.brown@intel.com, pavel@ucw.cz, akpm@linux-foundation.org,
johannes.thumshirn@wdc.com, ming.lei@redhat.com, jack@suse.cz,
tj@kernel.org, gustavo@embeddedor.com, bvanassche@acm.org,
osandov@fb.com, koct9i@gmail.com, damien.lemoal@wdc.com,
steve@sk2.org, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH 1/2] Block layer filter - second version
Date: Wed, 21 Oct 2020 08:09:18 -0700 [thread overview]
Message-ID: <7bd31238-0c7c-ed6f-d0b9-680fcaa54513@infradead.org> (raw)
In-Reply-To: <1603271049-20681-2-git-send-email-sergei.shtepa@veeam.com>
On 10/21/20 2:04 AM, Sergei Shtepa wrote:
> diff --git a/block/Kconfig b/block/Kconfig
> index bbad5e8bbffe..a308801b4376 100644
> --- a/block/Kconfig
> +++ b/block/Kconfig
> @@ -204,6 +204,17 @@ config BLK_INLINE_ENCRYPTION_FALLBACK
> by falling back to the kernel crypto API when inline
> encryption hardware is not present.
>
> +config BLK_FILTER
> + bool "Enable support for block layer filters"
> + default y
Drop the default y. We don't add modules to a default build without
some tough justification.
> + depends on MODULES
> + help
> + Enabling this lets third-party kernel modules intercept
lets loadable kernel modules intercept
> + bio requests for any block device. This allows them to implement
> + changed block tracking and snapshots without any reconfiguration of
> + the existing setup. For example, this option allows snapshotting of
> + a block device without adding it to LVM.
--
~Randy
next prev parent reply other threads:[~2020-10-21 15:09 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-21 9:04 [PATCH 0/2] block layer filter and block device snapshot module Sergei Shtepa
2020-10-21 9:04 ` [PATCH 1/2] Block layer filter - second version Sergei Shtepa
2020-10-21 9:14 ` Johannes Thumshirn
2020-10-21 10:01 ` Sergei Shtepa
2020-10-21 9:21 ` Damien Le Moal
2020-10-21 10:27 ` Sergei Shtepa
2020-10-21 11:44 ` Matthew Wilcox
2020-10-21 12:55 ` Sergei Shtepa
2020-10-21 13:07 ` Matthew Wilcox
2020-10-21 14:35 ` Sergei Shtepa
2020-10-21 15:09 ` Randy Dunlap [this message]
2020-10-24 14:53 ` Greg KH
[not found] ` <1603271049-20681-3-git-send-email-sergei.shtepa@veeam.com>
2020-10-21 9:08 ` [PATCH 2/2] blk-snap - snapshots and change-tracking for block devices Pavel Machek
2020-10-21 9:37 ` Sergei Shtepa
[not found] ` <BL0PR04MB65142D9F391FE8777F096EF5E71C0@BL0PR04MB6514.namprd04.prod.outlook.com>
2020-10-21 11:15 ` Sergei Shtepa
2020-10-21 15:11 ` Randy Dunlap
2020-10-21 13:31 ` [PATCH 0/2] block layer filter and block device snapshot module Hannes Reinecke
2020-10-21 14:10 ` Sergei Shtepa
2020-10-22 5:58 ` Hannes Reinecke
2020-10-22 9:44 ` Sergei Shtepa
2020-10-22 10:28 ` Damien Le Moal
2020-10-22 13:52 ` Sergei Shtepa
2020-10-22 15:14 ` Darrick J. Wong
2020-10-22 17:54 ` Mike Snitzer
2020-10-23 9:13 ` hch
2020-10-23 10:31 ` Hannes Reinecke
2020-10-23 11:04 ` Sergei Shtepa
2020-10-23 11:12 ` [dm-devel] " hch
2020-10-22 18:35 ` Mike Snitzer
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