init: handle ubi/mtd root mounting like all other root types

Assign a Root_Generic magic value for UBI/MTD root and handle the root
mounting in mount_root like all other root types.  Besides making the
code more clear this also means that UBI/MTD root can be used together
with an initrd (not that anyone should care).

Also factor parsing of the root name into a helper now that it can
be easily done and will get more complicated with subsequent patches.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230531125535.676098-11-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

This commit is contained in:

Christoph Hellwig

2023-05-31 14:55:21 +02:00

committed by

Jens Axboe

parent 73231b58b1

commit 07d63cbb67

2 changed files with 15 additions and 9 deletions

									
										include/linux/root_dev.h
									
		+1
		
												View File
												
				@@ -9,6 +9,7 @@

				enum {

					Root_NFS = MKDEV(UNNAMED_MAJOR, 255),

					Root_CIFS = MKDEV(UNNAMED_MAJOR, 254),

					Root_Generic = MKDEV(UNNAMED_MAJOR, 253),

					Root_RAM0 = MKDEV(RAMDISK_MAJOR, 0),

				};