* Jörn Engel <joern@xxxxxxxxx> wrote: > On Fri, 9 January 2009 11:37:39 -0800, David Brown wrote: > > On Fri, Jan 09, 2009 at 05:54:22PM +0100, Jörn Engel wrote: > > > > > > In general, filesystems and ABI changes are special because stupid > > > mistakes are eternal. If some device driver has a bug, you can fix > > > it, reboot and be done with it. Not so with filesystems. > > > > Squashfs is readonly from the kernel. The images are created with > > userspace tools. > > While true, it doesn't make a difference. If, for example, your > structures members are not naturally aligned, you take a performance hit > for no good reason. Simply moving fields around would make the code go > faster. But the format is fixed and prevents you from making this > change. > > You have to get those things right from the beginning or pay for your > mistakes everafter. In general (and I stress "In general") filesystems > want more review than ordinary device drivers. And just to stress that > again, this is not an argument against merging squashfs now. What does a performance hit have to do with an ABI? Absolutely nothing - if such a bug is noticed it is fixed, that's it. Your argument does not parse and makes absolutely zero technical sense. Your "ABI is forever" objection against a _read only_ filesystem is a newbie mistake worthy of cookie file inclusion - i had a real good laugh when i read it ;-) Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
