Hi. On Wed, Oct 22, 2008 at 9:05 PM, James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote: > On Wed, 2008-10-22 at 18:29 +0200, Fabio Comolli wrote: >> Hi. >> In kernel 2.6.27.2 - drivers/scsi/Kconfig we have: >> >> config SCSI_WAIT_SCAN >> tristate >> default m >> depends on SCSI >> depends on MODULES >> >> The tristate field is empty. This has the effect that this option is >> not visible in menuconfig and so it's always selected. The default is >> "m" for all architectures and so this module is always compiled if >> SCSI and MODULES are both enabled. >> >> I'm using a patch like this one: >> >> config SCSI_WAIT_SCAN >> - tristate >> + tristate "Wait until all the async scans are complete" >> default m >> depends on SCSI >> depends on MODULES >> >> to get rid of that module. >> >> Of course, I have no idea if this is correct or the current behavior >> is the expected one. > > The point of all of this is that if you enable async scanning, you need > a method of waiting for the scans to complete, which is all this module > does (you insert it and it doesn't come back from the insertion until > all the pending async scans are complete). It's tristate because really > it only makes sense to be M or N. The consensus is that, given async > scanning is always an option, this function should always be built as a > module *if* modules and SCSI are enabled ... because you might have a > HBA module you enabled async scanning for and you need to wait. OK, I see your point. But in my case I have SCSI enabled only because it's SELECTed by ATA (it's just a laptop) and I don't have any hba's and never will. So no async scan. Maybe this module should be enabled if async scan is. > > There's really not much point giving the user the choice, since this > module is part of the initrd sequence ... it's not really anything a > user would want to use stand alone, hence there's no point giving a > choice about it. > I don't use initrd at all. I just noticed the existence of this module while trying to have a non modular kernel. This failed because of ipw2200 and after having enabled modules again I just found this scsi_wait_scan.ko. > James > > > Regards, Fabio -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
