Gui-Dong Han aa88278693 9p: Add missing read barrier in virtio zero-copy path ...

Commit 2b6e72ed74 ("9P: Add memory barriers to protect request
fields over cb/rpc threads handoff") added a read barrier after
p9_client_rpc() waits for req->status, pairing with the write barrier in
p9_client_cb(). The virtio zero-copy wait path was missed.

Add the same read barrier after the zero-copy wait before reading the
completed request.

Fixes: 2b6e72ed74 ("9P: Add memory barriers to protect request fields over cb/rpc threads handoff")
Signed-off-by: Gui-Dong Han <[email protected]>
Message-ID: <[email protected]>
Signed-off-by: Dominique Martinet <[email protected]>

2026-06-21 05:22:57 +00:00

..

client.c

9p: avoid putting oldfid in p9_client_walk() error path

2026-06-21 05:22:56 +00:00

error.c

9p: Use hashtable.h for hash_errmap

2025-03-23 06:20:48 +09:00

Kconfig

net/9p/usbg: allow building as standalone module

2024-11-22 23:48:14 +09:00

Makefile

net/9p/usbg: Add new usb gadget function transport

2024-09-03 09:57:08 +02:00

mod.c

9p: convert to the new mount API

2025-11-03 16:49:53 +09:00

protocol.c

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

protocol.h

net/9p: add p9_msg_buf_size()

2022-10-05 07:05:41 +09:00

trans_common.c

9p: fix file headers

2021-11-03 17:45:04 +09:00

trans_common.h

9p: fix a bunch of checkpatch warnings

2021-11-04 21:04:25 +09:00

trans_fd.c

net/9p: Replace strlen() strcpy() pair with strscpy()

2026-06-21 05:22:57 +00:00

trans_rdma.c

net/9p: fix race condition on rdma->state in trans_rdma.c

2026-06-21 05:22:57 +00:00

trans_usbg.c

net/9p/usbg: Constify struct configfs_item_operations

2026-05-19 11:55:53 +00:00

trans_virtio.c

9p: Add missing read barrier in virtio zero-copy path

2026-06-21 05:22:57 +00:00

trans_xen.c

9p/trans_xen: replace simple_strto* with kstrtouint

2026-04-16 02:57:01 +00:00