[PATCH 5.14 086/151] netfs: Fix READ/WRITE confusion when calling iov_iter_xarray()
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-10-11 14:07:49
Also in:
ceph-devel, linux-cifs, linux-fsdevel, linux-nfs, lkml, stable
Subsystem:
filesystems (vfs and infrastructure), filesystems [netfs library], the rest · Maintainers:
Alexander Viro, Christian Brauner, David Howells, Paulo Alcantara, Linus Torvalds
From: David Howells <dhowells@redhat.com>
[ Upstream commit 330de47d14af0c3995db81cc03cf5ca683d94d81 ]
Fix netfs_clear_unread() to pass READ to iov_iter_xarray() instead of WRITE
(the flag is about the operation accessing the buffer, not what sort of
access it is doing to the buffer).
Fixes: 3d3c95046742 ("netfs: Provide readahead and readpage netfs helpers")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-afs@lists.infradead.org
cc: ceph-devel@vger.kernel.org
cc: linux-cifs@vger.kernel.org
cc: linux-nfs@vger.kernel.org
cc: v9fs-developer@lists.sourceforge.net
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Link: https://lore.kernel.org/r/162729351325.813557.9242842205308443901.stgit@warthog.procyon.org.uk/ (local)
Link: https://lore.kernel.org/r/162886603464.3940407.3790841170414793899.stgit@warthog.procyon.org.uk (local)
Link: https://lore.kernel.org/r/163239074602.1243337.14154704004485867017.stgit@warthog.procyon.org.uk (local)
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/netfs/read_helper.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/netfs/read_helper.c b/fs/netfs/read_helper.c
index 0b6cd3b8734c..994ec22d4040 100644
--- a/fs/netfs/read_helper.c
+++ b/fs/netfs/read_helper.c@@ -150,7 +150,7 @@ static void netfs_clear_unread(struct netfs_read_subrequest *subreq) { struct iov_iter iter; - iov_iter_xarray(&iter, WRITE, &subreq->rreq->mapping->i_pages, + iov_iter_xarray(&iter, READ, &subreq->rreq->mapping->i_pages, subreq->start + subreq->transferred, subreq->len - subreq->transferred); iov_iter_zero(iov_iter_count(&iter), &iter);
--
2.33.0