Hi Linus, On Sat, Oct 22 2011, Linus Walleij wrote: > So what about a cmdline approach? That makes it possible > for people who are willingly recompiling and hacking their kernels > to tinker with this if they absolutely want to go in on that > partition, make it rw and change stuff. > > ...org have I just got all this backwards...? Regarding this patch, we're not so worried that someone will take a read-only boot partition and make it read-write and do something wrong; sysfs is good enough to protect against that happening (at least by mistake). What we're worried about is someone issuing the perm read-only command, and not realizing that it really means that they can never ever write any more changes to their eMMC -- it's a one-time fuse -- and perhaps further not realizing that this may make their expensive cell phone become a brick of some sort, depending on how much the bootloader or OS depends on having r/w access. I don't even know that I'd want to make such an option available via a boot argument, since boot arguments are often misunderstood. As Andrei says, it doesn't sound like something a regular user (as opposed to an OEM) should ever have reason to do. I'd rather leave it to specialized manufacturing equipment. Does that make sense? Thanks, - Chris. -- Chris Ball <cjb@xxxxxxxxxx> <http://printf.net/> One Laptop Per Child -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
