Re: [PATCH 4/5] afs: Zero bytes after 'oldsize' if we're expanding the file

From: David Howells
Date: Mon Feb 27 2023 - 08:50:27 EST


Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> wrote:

> POSIX requires that "If the file size is increased, the extended area
> shall appear as if it were zero-filled". It is possible to use mmap to
> write past EOF and that data will become visible instead of zeroes.
>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>

That seems to work. Do you want me to pass it on to Linus? If not:

Acked-by: David Howells <dhowells@xxxxxxxxxx>