On Fri, 11 Aug 2006 01:11:23 +0400
Alex Tomas <[email protected]> wrote:
> >> A buffer_head is the kernel's sole abstraction of a disk block.
> >> Filesystems use disk blocks a lot, and they need such an abstraction.
>
> JG> IMO Al Viro work has shown that you can do pagecache I/O without needing
> JG> such a heavyweight system.
>
> in delayed allocation patch for ext3 (ontop of extents) we do use
> bio's for data.
As does ext3 with `-o writeback,nobh'.
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