On Tue, Jan 31, 2017 at 8:59 AM, Matthew Wilcox <[email protected]> wrote: > Hi Dan, Konstantin, > > You've been interested in using range entries in the radix tree rather > than higher-order entries. I've built a range entry interface on top > of our current radix tree substrate, and it seems to be behaving itself > in the test suite. Would you care to try out this patch? Ideas for > other tests to add to the test suite would be appreciated too. > > There may be some minor conflicts with the current Linus tree; the full > patch series can be found here: > > http://git.infradead.org/users/willy/linux-dax.git/shortlog/refs/heads/idr-20170131 > > commit b6444c0557bc1ac5add3c8db66d26a7ba7ccd6a6 > Author: Matthew Wilcox <[email protected]> > Date: Tue Jan 31 11:16:47 2017 -0500 > > radix-tree: Add range entry support > > We have a confirmed customer in the shape of devm_memremap_pages(), so > add support for range entries. The documentation lists caveats on their > use, but none of these caveats apply to the one user. > > Signed-off-by: Matthew Wilcox <[email protected]>
Thanks, I'll take a look. This will let me get rid of the order_at() hack I have in devm_memremap_pages(). I assume there's no requirement that 'start' be aligned to 'len' when calling radix_tree_insert_range()?
