From: Christoph Hellwig [mailto:hch@xxxxxxxxxxxxx] > On Sat, Sep 10, 2016 at 07:33:18AM +0000, Matthew Wilcox wrote: > > > caller specific is unaceptable. That being said your idea doesn't > > > sounds unreasonable, but will require a bit more work and has no > > > real short-term need. > > > > So your proposal is to remove buffer_heads from ext2? > > No, the proposal is to remove buffer_heads from XFS first, then GFS2 and then > maybe others like ext4. I'd like to remove buffer_heads from the DAX path for > ext2 and ext4 entitrely for sure (and direct I/O next). That's ... what I propose. The only use of buffer_head in my proposal is to communicate a single extent from the filesystem to the DAX core, and that can equally well use an iomap. Ross seems to think that converting the current DAX code over to using iomap requires converting all of ext2 away from buffer_head; are you saying he's wrong? -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
