Re: [PATCH v9 3/8] iomap: Don't get an reference on ZERO_PAGE for direct I/O block zeroing

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To: David Howells <dhowells@xxxxxxxxxx>
Subject: Re: [PATCH v9 3/8] iomap: Don't get an reference on ZERO_PAGE for direct I/O block zeroing
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Tue, 24 Jan 2023 11:01:01 -0800
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Jeff Layton <jlayton@xxxxxxxxxx>, David Hildenbrand <david@xxxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxxxx>, Logan Gunthorpe <logang@xxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20230124170108.1070389-4-dhowells@redhat.com>
References: <20230124170108.1070389-1-dhowells@redhat.com> <20230124170108.1070389-4-dhowells@redhat.com>

On Tue, Jan 24, 2023 at 05:01:03PM +0000, David Howells wrote:
> ZERO_PAGE can't go away, no need to hold an extra reference.
> 
> Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>

If you send this on this needs your signoff as well, btw.

References:
- [PATCH v9 0/8] iov_iter: Improve page extraction (pin or just list)
  - From: David Howells
- [PATCH v9 3/8] iomap: Don't get an reference on ZERO_PAGE for direct I/O block zeroing
  - From: David Howells

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