linux/include/net/9p, branch v3.16

9pnet: p9_client->conn field is unused. Remove it.

2014-03-25T21:38:16Z

Signed-off-by: Simon Derr Signed-off-by: Eric Van Hensbergen

9P: Get rid of REQ_STATUS_FLSH

2014-03-25T21:38:15Z

This request state is mostly useless, and properly implementing it for RDMA would require an extra lock to be taken in handle_recv() and in rdma_cancel() to avoid this race: handle_recv() rdma_cancel() . . . if req->state == SENT req->state = RCVD . . req->state = FLSH So just get rid of it. Signed-off-by: Simon Derr Signed-off-by: Eric Van Hensbergen

9P: Add cancelled() to the transport functions.

2014-03-25T21:38:11Z

And move transport-specific code out of net/9p/client.c Signed-off-by: Simon Derr Signed-off-by: Eric Van Hensbergen

9P: Add memory barriers to protect request fields over cb/rpc threads handoff

2014-03-25T21:37:59Z

We need barriers to guarantee this pattern works as intended: [w] req->rc, 1 [r] req->status, 1 wmb rmb [w] req->status, 1 [r] req->rc Where the wmb ensures that rc gets written before status, and the rmb ensures that if you observe status == 1, rc is the new value. Signed-off-by: Dominique Martinet Signed-off-by: Eric Van Hensbergen

Merge tag 'for-linus-3.12-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs

2013-09-11T19:34:13Z

Pull 9p updates from Eric Van Hensbergen: "Minor 9p fixes and tweaks for 3.12 merge window The first fixes namespace issues which causes a kernel NULL pointer dereference, the second fixes uevent handling to work better with udev, and the third switches some code to use srlcpy instead of strncpy in order to be safer. All changes have been baking in for-next for at least 2 weeks" * tag 'for-linus-3.12-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: fs/9p: avoid accessing utsname after namespace has been torn down 9p: send uevent after adding/removing mount_tag attribute fs: 9p: use strlcpy instead of strncpy

fs/9p: avoid accessing utsname after namespace has been torn down

2013-08-26T15:28:46Z

During trinity fuzzing in a kvmtool guest, I stumbled across the following: Unable to handle kernel NULL pointer dereference at virtual address 00000004 PC is at v9fs_file_do_lock+0xc8/0x1a0 LR is at v9fs_file_do_lock+0x48/0x1a0 [] (v9fs_file_do_lock+0xc8/0x1a0) from [] (locks_remove_flock+0x8c/0x124) [] (locks_remove_flock+0x8c/0x124) from [] (__fput+0x58/0x1e4) [] (__fput+0x58/0x1e4) from [] (task_work_run+0xac/0xe8) [] (task_work_run+0xac/0xe8) from [] (do_exit+0x6bc/0x8d8) [] (do_exit+0x6bc/0x8d8) from [] (do_group_exit+0x3c/0xb0) [] (do_group_exit+0x3c/0xb0) from [] (__wake_up_parent+0x0/0x18) I believe this is due to an attempt to access utsname()->nodename, after exit_task_namespaces() has been called, leaving current->nsproxy->uts_ns as NULL and causing the above dereference. A similar issue was fixed for lockd in 9a1b6bf818e7 ("LOCKD: Don't call utsname()->nodename from nlmclnt_setlockargs"), so this patch attempts something similar for 9pfs. Cc: Eric Van Hensbergen Cc: Ron Minnich Cc: Latchesar Ionkov Cc: Trond Myklebust Signed-off-by: Will Deacon Signed-off-by: Eric Van Hensbergen

9p: client: remove unused code and any reference to "cancelled" function

2013-07-30T22:54:28Z

This patch reverts commit 80b45261a0b263536b043c5ccfc4ba4fc27c2acc which was implementing a 'cancelled' functionality to notify that a cancelled request will not be replied. This implementation was not used anywhere and therefore removed. Signed-off-by: Andi Shyti Signed-off-by: David S. Miller

9P: Add cancelled() to the transport functions.

2013-07-08T03:18:18Z

RDMA needs to post a buffer for each incoming reply. Hence it needs to keep count of these and needs to be aware of whether a flushed request has received a reply or not. This patch adds the cancelled() callback to the transport modules. It is called when RFLUSH has been received and that the corresponding request will never receive a reply. Signed-off-by: Simon Derr Signed-off-by: Eric Van Hensbergen

net/9p: add privport option to 9p tcp transport

2013-07-08T02:59:54Z

If the privport option is specified, the tcp transport binds local address to a reserved port before connecting to the 9p server. In some cases when 9P AUTH cannot be implemented, this is better than nothing. Signed-off-by: Jim Garlick Signed-off-by: Eric Van Hensbergen

9p: turn fid->dlist into hlist

2013-02-28T03:51:08Z

Signed-off-by: Al Viro