On Wed, Dec 11, 2019 at 07:03:40PM -0700, Jens Axboe wrote: > Tested and cleaned a bit, and added truncate protection through > inode_dio_begin()/inode_dio_end(). > > https://git.kernel.dk/cgit/linux-block/commit/?h=buffered-uncached&id=6dac80bc340dabdcbfb4230b9331e52510acca87 > > This is much faster than the previous page cache dance, and I _think_ > we're ok as long as we block truncate and hole punching. What about races between UNCACHED and regular buffered IO? Seems like we might end up sending overlapping writes to the device?
