On 03.06.25 15:10, Jens Axboe wrote: > On 6/3/25 12:20 AM, Johannes Thumshirn wrote: >> On 02.06.25 17:53, Jens Axboe wrote: >>> On 6/2/25 9:00 AM, Christoph Hellwig wrote: >>>> Hi Jens, >>>> >>>> I just tried to reference RWF_DONTCACHE semantics in a standards >>>> discussion, but it doesn't seem to be documented in the man pages >>>> or in fact anywhere else I could easily find. Could you please write >>>> up the semantics for the preadv2/pwritev2 man page? >>> >>> Sure, I can write up something for the man page. >>> >> >> Hi Jens, >> >> Small sidetrack here. What happened to the ext4 and btrfs support of >> RWF_DONTCACHE? I remember seeing your series having ext4 and btrfs >> support as well but in current master only xfs is setting FOP_DONTCACHE. > > The btrfs support got queued up, that's all I know on that front. For > ext4, it needed a bit of a hack [1] and there was some chatter on > converting the write side to iomap, which would eliminate the need for > that hack. The last fs patches I had on top of the core bits was: > > https://git.kernel.dk/cgit/linux/log/?h=buffered-uncached-fs.11 > > in case you or someone else wants to pursue those parts. > > [1] https://git.kernel.dk/cgit/linux/commit/?h=buffered-uncached-fs.11&id=92df0ef308d0bfbbc26a7efa1d571a506fd8fee3 > Thanks
