kernel/linux.git/drivers/md/dm-init.c, branch v6.1.168

dm init: Handle minors larger than 255

2024-09-12T09:10:22+00:00

[ Upstream commit 140ce37fd78a629105377e17842465258a5459ef ] dm_parse_device_entry() simply copies the minor number into dmi.dev, but the dev_t format splits the minor number between the lowest 8 bytes and highest 12 bytes. If the minor number is larger than 255, part of it will end up getting treated as the major number Fix this by checking that the minor number is valid and then encoding it as a dev_t. Signed-off-by: Benjamin Marzinski Signed-off-by: Mikulas Patocka Signed-off-by: Sasha Levin

dm init: add dm-mod.waitfor to wait for asynchronously probed block devices

2023-07-23T11:49:38+00:00

commit 035641b01e72af4f6c6cf22a4bdb5d7dfc4e8e8e upstream. Just calling wait_for_device_probe() is not enough to ensure that asynchronously probed block devices are available (E.G. mmc, usb), so add a "dm-mod.waitfor=[,..,]" parameter to get dm-init to explicitly wait for specific block devices before initializing the tables with logic similar to the rootwait logic that was introduced with commit cc1ed7542c8c ("init: wait for asynchronously scanned block devices"). E.G. with dm-verity on mmc using: dm-mod.waitfor="PARTLABEL=hash-a,PARTLABEL=root-a" [ 0.671671] device-mapper: init: waiting for all devices to be available before creating mapped devices [ 0.671679] device-mapper: init: waiting for device PARTLABEL=hash-a ... [ 0.710695] mmc0: new HS200 MMC card at address 0001 [ 0.711158] mmcblk0: mmc0:0001 004GA0 3.69 GiB [ 0.715954] mmcblk0boot0: mmc0:0001 004GA0 partition 1 2.00 MiB [ 0.722085] mmcblk0boot1: mmc0:0001 004GA0 partition 2 2.00 MiB [ 0.728093] mmcblk0rpmb: mmc0:0001 004GA0 partition 3 512 KiB, chardev (249:0) [ 0.738274] mmcblk0: p1 p2 p3 p4 p5 p6 p7 [ 0.751282] device-mapper: init: waiting for device PARTLABEL=root-a ... [ 0.751306] device-mapper: init: all devices available [ 0.751683] device-mapper: verity: sha256 using implementation "sha256-generic" [ 0.759344] device-mapper: ioctl: dm-0 (vroot) is ready [ 0.766540] VFS: Mounted root (squashfs filesystem) readonly on device 254:0. Signed-off-by: Peter Korsgaard Signed-off-by: Mike Snitzer Cc: Mark-PK Tsai Signed-off-by: Greg Kroah-Hartman

dm init: Set file local variable static

2020-08-04T19:51:28+00:00

Declare dm_allowed_targets as static to avoid the warning: drivers/md/dm-init.c:39:12: warning: symbol 'dm_allowed_targets' was not declared. Should it be static? when compiling with C=1. Signed-off-by: Damien Le Moal Signed-off-by: Mike Snitzer

docs: device-mapper: move it to the admin-guide

2019-07-15T14:03:01+00:00

The DM support describes lots of aspects related to mapped disk partitions from the userspace PoV. Signed-off-by: Mauro Carvalho Chehab

Merge tag 'docs-5.3' of git://git.lwn.net/linux

2019-07-09T19:34:26+00:00

Pull Documentation updates from Jonathan Corbet: "It's been a relatively busy cycle for docs: - A fair pile of RST conversions, many from Mauro. These create more than the usual number of simple but annoying merge conflicts with other trees, unfortunately. He has a lot more of these waiting on the wings that, I think, will go to you directly later on. - A new document on how to use merges and rebases in kernel repos, and one on Spectre vulnerabilities. - Various improvements to the build system, including automatic markup of function() references because some people, for reasons I will never understand, were of the opinion that :c:func:``function()`` is unattractive and not fun to type. - We now recommend using sphinx 1.7, but still support back to 1.4. - Lots of smaller improvements, warning fixes, typo fixes, etc" * tag 'docs-5.3' of git://git.lwn.net/linux: (129 commits) docs: automarkup.py: ignore exceptions when seeking for xrefs docs: Move binderfs to admin-guide Disable Sphinx SmartyPants in HTML output doc: RCU callback locks need only _bh, not necessarily _irq docs: format kernel-parameters -- as code Doc : doc-guide : Fix a typo platform: x86: get rid of a non-existent document Add the RCU docs to the core-api manual Documentation: RCU: Add TOC tree hooks Documentation: RCU: Rename txt files to rst Documentation: RCU: Convert RCU UP systems to reST Documentation: RCU: Convert RCU linked list to reST Documentation: RCU: Convert RCU basic concepts to reST docs: filesystems: Remove uneeded .rst extension on toctables scripts/sphinx-pre-install: fix out-of-tree build docs: zh_CN: submitting-drivers.rst: Remove a duplicated Documentation/ Documentation: PGP: update for newer HW devices Documentation: Add section about CPU vulnerabilities for Spectre Documentation: platform: Delete x86-laptop-drivers.txt docs: Note that :c:func: should no longer be used ...

dm init: remove trailing newline from calls to DMERR() and DMINFO()

2019-06-25T17:43:09+00:00

These printing macros already add a trailing newline, so having another one here just makes for blank lines when these prints are enabled. Remove these needless newlines. Fixes: 6bbc923dfcf5 ("dm: add support to directly boot to a mapped device") Signed-off-by: Stephen Boyd Signed-off-by: Mike Snitzer

dm init: fix incorrect uses of kstrndup()

2019-06-25T17:34:52+00:00

Fix 2 kstrndup() calls with incorrect argument order. Fixes: 6bbc923dfcf5 ("dm: add support to directly boot to a mapped device") Cc: stable@vger.kernel.org # v5.1 Signed-off-by: Gen Zhang Signed-off-by: Mike Snitzer

docs: convert docs to ReST and rename to *.rst

2019-06-14T20:21:04+00:00

The conversion is actually: - add blank lines and indentation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab Acked-by: Bjorn Helgaas Acked-by: Mark Brown Signed-off-by: Jonathan Corbet

dm init: fix max devices/targets checks

2019-04-30T20:51:23+00:00

dm-init should allow up to DM_MAX_{DEVICES,TARGETS} for devices/targets, and not DM_MAX_{DEVICES,TARGETS} - 1. Fix the checks and also fix the error message when the number of devices is surpassed. Fixes: 6bbc923dfcf57d ("dm: add support to directly boot to a mapped device") Cc: stable@vger.kernel.org Signed-off-by: Helen Koike Signed-off-by: Mike Snitzer

dm init: fix const confusion for dm_allowed_targets array

2019-04-01T20:16:37+00:00

A non const pointer to const cannot be marked initconst. Mark the array actually const. Fixes: 6bbc923dfcf5 dm: add support to directly boot to a mapped device Signed-off-by: Andi Kleen Signed-off-by: Mike Snitzer