Re: [PATCH v16 05/13] tty, proc, kernfs, random: Use direct_splice_read()

[Greg Kroah-Hartman]

On Wed, Mar 08, 2023 at 02:37:46PM +0000, David Howells wrote:
> Use direct_splice_read() for tty, procfs, kernfs and random files rather
> than going through generic_file_splice_read() as they just copy the file
> into the output buffer and don't splice pages.  This avoids the need for
> them to have a ->read_folio() to satisfy filemap_splice_read().
> 
> Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
> cc: Christoph Hellwig <hch@xxxxxx>
> cc: Jens Axboe <axboe@xxxxxxxxx>
> cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
> cc: John Hubbard <jhubbard@xxxxxxxxxx>
> cc: David Hildenbrand <david@xxxxxxxxxx>
> cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
> cc: Miklos Szeredi <miklos@xxxxxxxxxx>
> cc: Arnd Bergmann <arnd@xxxxxxxx>
> cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> cc: linux-block@xxxxxxxxxxxxxxx
> cc: linux-fsdevel@xxxxxxxxxxxxxxx
> cc: linux-mm@xxxxxxxxx

Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>