On Mon, Jan 28, 2019 at 11:22 PM Miklos Szeredi <miklos@xxxxxxxxxx> wrote: > > On Mon, Jan 28, 2019 at 10:17 PM Miklos Szeredi <miklos@xxxxxxxxxx> wrote: > > > Trying to put some code together... > > Very rudimentary patch attached. It doens't do direct IO yet, but > demonstrates what I meant about achoring the upper file in the inode. > Code looks good, but blows up on xfstests, so I'll wait for a baked patch before testing. > Also found the trick to actually make writeback work: > super_setup_bdi() call in fill_super... > Cool, but when adding only setup_bdi() this to my code, I still don't see any writeback. No writeback observed with your patch as well. Speaking of which, did you read the warning sign above simple_write_end()? Aren't you missing the mark_inode_dirty() call? Thanks, Amir.
