Documentation: add pointer to name_to_dev_t for root= values

Update kernel-parameters.txt to point users to the authoritative comment
for name_to_dev_t.  In addition, updates other places where some
name_to_dev_t behavior was discussed.  All other references to root=
appear to be for explicit sample usage or just side comments when
discussing other kernel parameters.

Signed-off-by: Will Drewry <[email protected]>
Cc: Kay Sievers <[email protected]>
Cc: Randy Dunlap <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Trond Myklebust <[email protected]>
Cc: Jens Axboe <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Will Drewry 2011-08-03 16:21:08 -07:00 • committed by Linus Torvalds
commit f2d34fd943
3 changed files with 25 additions and 3 deletions

View file

@ -129,6 +129,20 @@ decimal 11 is the major of SCSI CD-ROMs, and the minor 0 stands for
the first of these. You can find out all valid major numbers by
looking into include/linux/major.h.
In addition to major and minor numbers, if the device containing your
root partition uses a partition table format with unique partition
identifiers, then you may use them. For instance,
"root=PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF". It is also
possible to reference another partition on the same device using a
known partition UUID as the starting point. For example,
if partition 5 of the device has the UUID of
00112233-4455-6677-8899-AABBCCDDEEFF then partition 3 may be found as
follows:
PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF/PARTNROFF=-2
Authoritative information can be found in
"Documentation/kernel-parameters.txt".
2.2) ro, rw
-----------