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charset=us-ascii Content-Disposition: inline In-Reply-To: <20230713055841.24815-1-mark-pk.tsai@mediatek.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230716_081625_318851_FB00E61B X-CRM114-Status: GOOD ( 15.93 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Thu, Jul 13, 2023 at 01:58:37PM +0800, Mark-PK Tsai wrote: > From: Peter Korsgaard > > 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: stable@vger.kernel.org > Signed-off-by: Mark-PK Tsai > --- > .../admin-guide/device-mapper/dm-init.rst | 8 +++++++ > drivers/md/dm-init.c | 22 ++++++++++++++++++- > 2 files changed, 29 insertions(+), 1 deletion(-) What is the git commit id of this change in Linus's tree? thanks, greg k-h