I'm a bit worried about one thing ... it looks like XFS and ext4 use different techniques to order data and metadata referencing them. now I'm not that optimistic that we can separate ordering from delalloc itself clean and reasonable way. In general, I'd prefer common code in fs/ (mm/?) of course, for number of reasons. thanks, Alex Christoph Hellwig wrote:
I'm a big proponent of having proper common delalloc code, but the one proposed here is not generic for the existing filesystem using delalloc. It's still on my todo list to revamp the xfs code to get rid of some of the existing mess and make it useable genericly. If the ext4 users are fine with the end result we could move to generic code. Note that moving to VFS is bullshit either way, writeback code is nowhere near the VFS nor should it.
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