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Date: Wed, 17 Apr 2024 00:03:10 +0100
From: David Howells <dhowells@...hat.com>
To: Jeff Layton <jlayton@...nel.org>
Cc: dhowells@...hat.com, Christian Brauner <christian@...uner.io>,
    Gao Xiang <hsiangkao@...ux.alibaba.com>,
    Dominique Martinet <asmadeus@...ewreck.org>,
    Matthew Wilcox <willy@...radead.org>,
    Steve French <smfrench@...il.com>,
    Marc Dionne <marc.dionne@...istor.com>,
    Paulo Alcantara <pc@...guebit.com>,
    Shyam Prasad N <sprasad@...rosoft.com>, Tom Talpey <tom@...pey.com>,
    Eric Van Hensbergen <ericvh@...nel.org>,
    Ilya Dryomov <idryomov@...il.com>, netfs@...ts.linux.dev,
    linux-cachefs@...hat.com, linux-afs@...ts.infradead.org,
    linux-cifs@...r.kernel.org, linux-nfs@...r.kernel.org,
    ceph-devel@...r.kernel.org, v9fs@...ts.linux.dev,
    linux-erofs@...ts.ozlabs.org, linux-fsdevel@...r.kernel.org,
    linux-mm@...ck.org, netdev@...r.kernel.org,
    linux-kernel@...r.kernel.org, Latchesar Ionkov <lucho@...kov.net>,
    Christian Schoenebeck <linux_oss@...debyte.com>
Subject: Re: [PATCH 11/26] 9p: Use alternative invalidation to using launder_folio

Jeff Layton <jlayton@...nel.org> wrote:

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

Good point.  netfs_unbuffered_write_iter() calls kiocb_invalidate_pages() -
which uses invalidate_inode_pages2_range() to discard the pagecache.  It
should probably use filemap_invalidate_inode() instead.

David


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