Hi Jens, After you suggested a topic branch [1] as a way to address the recent bio_map_user_iov() conflict in linux-next, I've reviewed a few more patchsets in mm, and am now starting to suspect that a topic branch would be ideal here. Logan's "Userspace P2PDMA with O_DIRECT NVMe devices" series [2], my "convert most filesystems to pin_user_pages_fast()" series [3], and the block layer change from [1], all conflict in iov_iter*, and in bio_map_user_iov(). Less of an issue but still worth considering, Dan's "Fix the DAX-gup mistake" series [4] conflicts in gup.c, too. Maybe: gup_bio , or something like that, as a topic branch? Everyone: thoughts, preferences here? [1] https://lore.kernel.org/r/20220901161722.739d2013@xxxxxxxxxxxxxxxx [2] https://lore.kernel.org/r/20220825152425.6296-1-logang@xxxxxxxxxxxx [3] https://lore.kernel.org/r/20220831041843.973026-1-jhubbard@xxxxxxxxxx [4] https://lore.kernel.org/r/166225775968.2351842.11156458342486082012.stgit@xxxxxxxxxxxxxxxxxxxxxxxxx thanks, -- John Hubbard NVIDIA