[PATCH 6.18 1017/1611] netfs: Fix writethrough to use collection offload

6.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Howells <[email protected]>

[ Upstream commit ba6a9f6533c77c628eef0c0c5c19cd316e2be1b4 ]

Fix writethrough write to set NETFS_RREQ_OFFLOAD_COLLECTION on the request
so that collection is processed asynchronously rather than only right at
the end - and also so that asynchronous O_SYNC writes get collected at all.

Fixes: 288ace2f57c9 ("netfs: New writeback implementation")
Closes: https://sashiko.dev/#/patchset/20260616100821.2062304-1-dhowells%40redhat.com
Signed-off-by: David Howells <[email protected]>
Link: https://patch.msgid.link/[email protected]
cc: Paulo Alcantara <[email protected]>
cc: [email protected]
cc: [email protected]
Signed-off-by: Christian Brauner (Amutable) <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
 fs/netfs/write_issue.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/netfs/write_issue.c b/fs/netfs/write_issue.c
index 26289849343037..79b4085590fdb8 100644
--- a/fs/netfs/write_issue.c
+++ b/fs/netfs/write_issue.c
@@ -627,6 +627,7 @@ struct netfs_io_request *netfs_begin_writethrough(struct kiocb *iocb, size_t len
 	}
 
 	wreq->io_streams[0].avail = true;
+	__set_bit(NETFS_RREQ_OFFLOAD_COLLECTION, &wreq->flags);
 	trace_netfs_write(wreq, netfs_write_trace_writethrough);
 	return wreq;
 }
-- 
2.53.0