On Tue, Sep 20, 2022 at 01:52:38PM -0400, Mikulas Patocka wrote: > Hi > > Here I'm sending second version of the brd discard patches. That is quite interesting. btw, something out of topic, I once had some preliminary attempt to add DAX support to brd since brd works as ramdisk and brd-dax could have the following benefits: - DAX can be tested without PMEM devices; - ramdisk fses can be accessed without double page cache; - initrd use cases then can work well without extra page cache and maybe it can perform better than initramfs (without unpack process). I wrote some hack stuff but don't have more time working on it... https://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git/log/?h=erofs/initrd-fsdax I'm not sure if others are interested in topic though. It would be helpful to get rid of all brd page->index use cases first. Thanks, Gao Xiang > > Mikulas > -- > dm-devel mailing list > dm-devel@xxxxxxxxxx > https://listman.redhat.com/mailman/listinfo/dm-devel >
