Re: [Ext2-devel] [PATCH 1/5] Forking ext4 filesystem from ext3filesystem

[Andrew Morton]

On Fri, 11 Aug 2006 01:11:23 +0400
Alex Tomas <alex@xxxxxxxxxxxxx> 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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