Re: [Ext2-devel] [RFC] Adding multiple block allocation

[Andrew Morton]

Mingming Cao <cmm@xxxxxxxxxx> wrote:
>
>  right now direct io write to a hole is actually handled by buffered IO.
>  If so, there must be some valid reason that I could not see now.

Oh yes, that's right.  It's all to do with the fixes which went in a year
ago to prevent concurrent readers from peeking at uninitialised disk
blocks.

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