Add support for the RENAME_WHITEOUT and RENAME_EXCHANGE flags in renameat2(). This brings us pretty close to having btrfs ready to be an upper layer for overlayfs. (The last remaining issue is in btrfs_sync_file, which I'm looking at next if I have time.) This includes Davide Italiano's implementation of RENAME_EXCHANGE. I quickly pinged him on github [1] last week to confirm resubmission of his patch which originally went to this list on 2 April 2015 and didn't make it in. This is my first time submitting a kernel patch, I think I've covered all the style recommendations, and also addressed Filipe David Manana's review notes [2] on Davide Italiano's patch. Certainly let me know if there's anything else that should be cleaned up. Thanks! [1] https://github.com/fuhry/linux/commit/9a7300d973a192193857c595997f292a14c14197#commitcomment-15570553 [2] https://www.marc.info/?l=linux-btrfs&m=142796914520768&w=3 -- Dan Fuhry Senior Software Engineer, Datto Inc (203) 529-4949 x402 / dfuhry@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html