> On Mar 30, 2020, at 9:00 AM, Jason Baron <jbaron@xxxxxxxxxx> wrote: > > Let's add some CONFIG_* options to directly configure the raid0 layout > if you know in advance how your raid0 array was created. This can be > simpler than having to manage module or kernel command-line parameters. > > If the raid0 array was created by a pre-3.14 kernel, use > RAID0_ORIG_LAYOUT. If the raid0 array was created by a 3.14 or newer > kernel then select RAID0_ALT_MULTIZONE_LAYOUT. Otherwise, the default > setting is RAID0_LAYOUT_NONE, in which case the current behavior of > needing to specify a module parameter raid0.default_layout=1|2 is > preserved. > > Cc: Guoqing Jiang <guoqing.jiang@xxxxxxxxxxxxxxx> > Cc: NeilBrown <neilb@xxxxxxx> > Cc: Song Liu <songliubraving@xxxxxx> > Signed-off-by: Jason Baron <jbaron@xxxxxxxxxx> This patch looks good. However, I am not sure whether the user will recompile the kernel for a different default value. Do you have real world use case for this? Thanks, Song
