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Message-ID: <9b7de2417924192fb411744171015877c1d4c677.camel@kernel.org>
Subject: Re: [PATCH 11/26] 9p: Use alternative invalidation to using
 launder_folio
From: Jeff Layton <jlayton@kernel.org>
To: David Howells <dhowells@redhat.com>, Christian Brauner
	 <christian@brauner.io>, Gao Xiang <hsiangkao@linux.alibaba.com>, Dominique
	Martinet <asmadeus@codewreck.org>
Cc: Matthew Wilcox <willy@infradead.org>, Steve French <smfrench@gmail.com>,
  Marc Dionne <marc.dionne@auristor.com>, Paulo Alcantara
 <pc@manguebit.com>, Shyam Prasad N <sprasad@microsoft.com>, Tom Talpey
 <tom@talpey.com>, Eric Van Hensbergen <ericvh@kernel.org>, Ilya Dryomov
 <idryomov@gmail.com>, netfs@lists.linux.dev,  linux-cachefs@redhat.com,
 linux-afs@lists.infradead.org,  linux-cifs@vger.kernel.org,
 linux-nfs@vger.kernel.org,  ceph-devel@vger.kernel.org,
 v9fs@lists.linux.dev, linux-erofs@lists.ozlabs.org, 
 linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, 
 linux-kernel@vger.kernel.org, Latchesar Ionkov <lucho@ionkov.net>,
 Christian Schoenebeck <linux_oss@crudebyte.com>
Date: Mon, 15 Apr 2024 07:43:14 -0400
In-Reply-To: <20240328163424.2781320-12-dhowells@redhat.com>
References: <20240328163424.2781320-1-dhowells@redhat.com>
	 <20240328163424.2781320-12-dhowells@redhat.com>
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On Thu, 2024-03-28 at 16:34 +0000, David Howells wrote:
> Use writepages-based flushing invalidation instead of
> invalidate_inode_pages2() and ->launder_folio().  This will allow
> ->launder_folio() to be removed eventually.
>=20
> Signed-off-by: David Howells <dhowells@redhat.com>
> cc: Eric Van Hensbergen <ericvh@kernel.org>
> cc: Latchesar Ionkov <lucho@ionkov.net>
> cc: Dominique Martinet <asmadeus@codewreck.org>
> cc: Christian Schoenebeck <linux_oss@crudebyte.com>
> cc: Jeff Layton <jlayton@kernel.org>
> cc: v9fs@lists.linux.dev
> cc: netfs@lists.linux.dev
> cc: linux-fsdevel@vger.kernel.org
> ---
>  fs/9p/vfs_addr.c | 2 --
>  1 file changed, 2 deletions(-)
>=20
> diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
> index 047855033d32..5a943c122d83 100644
> --- a/fs/9p/vfs_addr.c
> +++ b/fs/9p/vfs_addr.c
> @@ -89,7 +89,6 @@ static int v9fs_init_request(struct netfs_io_request *r=
req, struct file *file)
>  	bool writing =3D (rreq->origin =3D=3D NETFS_READ_FOR_WRITE ||
>  			rreq->origin =3D=3D NETFS_WRITEBACK ||
>  			rreq->origin =3D=3D NETFS_WRITETHROUGH ||
> -			rreq->origin =3D=3D NETFS_LAUNDER_WRITE ||
>  			rreq->origin =3D=3D NETFS_UNBUFFERED_WRITE ||
>  			rreq->origin =3D=3D NETFS_DIO_WRITE);
> =20
> @@ -141,7 +140,6 @@ const struct address_space_operations v9fs_addr_opera=
tions =3D {
>  	.dirty_folio		=3D netfs_dirty_folio,
>  	.release_folio		=3D netfs_release_folio,
>  	.invalidate_folio	=3D netfs_invalidate_folio,
> -	.launder_folio		=3D netfs_launder_folio,
>  	.direct_IO		=3D noop_direct_IO,
>  	.writepages		=3D netfs_writepages,
>  };
>=20

Shouldn't this include a call to filemap_invalidate_inode? Is just
removing launder_folio enough to do this?

--=20
Jeff Layton <jlayton@kernel.org>