dm raid: add region_size parameter
authorJonathan Brassow <jbrassow@redhat.com>
Tue, 2 Aug 2011 11:32:07 +0000 (12:32 +0100)
committerAlasdair G Kergon <agk@redhat.com>
Tue, 2 Aug 2011 11:32:07 +0000 (12:32 +0100)
commitc1084561bb85da3630540ebe951749a8cd8fc714
treeecdefcf24dd88f4c19a873fa5d26039a0edf03a7
parentc0a2fa1ef1057a1e9450d6f055f1cde2ad4f85a2
dm raid: add region_size parameter

Allow the user to specify the region_size.

Ensures that the supplied value meets md's constraints, viz. the number of
regions does not exceed 2^21.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Documentation/device-mapper/dm-raid.txt
drivers/md/dm-raid.c