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Registered in England and Wales under Company Registration No. 3798903 From: David Howells To: Christian Brauner , Matthew Wilcox cc: dhowells@redhat.com, Jeff Layton , netfs@lists.linux.dev, v9fs@lists.linux.dev, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] netfs: Fix netfs_page_mkwrite() to flush conflicting data, not wait Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-ID: <614299.1719228243.1@warthog.procyon.org.uk> Content-Transfer-Encoding: quoted-printable Date: Mon, 24 Jun 2024 12:24:03 +0100 Message-ID: <614300.1719228243@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Content-Type: text/plain; charset="utf-8" Fix netfs_page_mkwrite() to use filemap_fdatawrite_range(), not filemap_fdatawait_range() to flush conflicting data. Fixes: 102a7e2c598c ("netfs: Allow buffered shared-writeable mmap through n= etfs_page_mkwrite()") Signed-off-by: David Howells cc: Matthew Wilcox cc: Jeff Layton cc: netfs@lists.linux.dev cc: v9fs@lists.linux.dev cc: linux-afs@lists.infradead.org cc: linux-cifs@vger.kernel.org cc: linux-mm@kvack.org cc: linux-fsdevel@vger.kernel.org --- fs/netfs/buffered_write.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/netfs/buffered_write.c b/fs/netfs/buffered_write.c index 05745bcc54c6..9cbbeeee6170 100644 --- a/fs/netfs/buffered_write.c +++ b/fs/netfs/buffered_write.c @@ -554,9 +554,9 @@ vm_fault_t netfs_page_mkwrite(struct vm_fault *vmf, str= uct netfs_group *netfs_gr group =3D netfs_folio_group(folio); if (group !=3D netfs_group && group !=3D NETFS_FOLIO_COPY_TO_CACHE) { folio_unlock(folio); - err =3D filemap_fdatawait_range(mapping, - folio_pos(folio), - folio_pos(folio) + folio_size(folio)); + err =3D filemap_fdatawrite_range(mapping, + folio_pos(folio), + folio_pos(folio) + folio_size(folio)); switch (err) { case 0: ret =3D VM_FAULT_RETRY;