On Thu, 25 May 2017 19:05:26 +0200 Pavel Machek <pa...@ucw.cz> wrote:
> On Tue 2017-05-16 11:27:08, Kevin McKinney wrote: > > Hi Everyone, > > > > Would it be possible to have a custom block device driver read/write > > in increments of 12k instead of reading/writing data in 4k increments? > > In other words, I would like to change the default page size on a > > x86_64 platform (4.4.0 kernel) from 4k to 12k as the minimum page > > size? I understand I may have negative performance due to > > fragmentation. Any help would be appreciated. > > > > If this is the wrong mailing list, please let me know the right one to use. > > > > I won't say "no" but ammount of work neccessary is likely measured in > man-years. Plus, hardware page size _is_ 4KB. Or a few other much larger sizes. Not that it actually matters. You can implement a larger software page size for a platform but it would still neeed to be a power of two, and you'd have trouble running some existing binaries for x86. What problem are you *actually* trying to solve ? Alan
