[PATCH v2 0/3] smb/server: improve async interim response handling for compound requests

[ChenXiaoSong <chenxiaosong@chenxiaosong.com>]

From: ChenXiaoSong <chenxiaosong@kylinos.cn>

v1->v2: send compound prefix before async pending response,
        then send STATUS_PENDING as a standalone response.

v1: https://lore.kernel.org/linux-cifs/20260702110522.911411-1-chenxiaosong@chenxiaosong.com/

I am currently implementing the ksmbd change notify feature, and I have
encountered the following issue.

Before this patchset, no CREATE response:

  Windows client compound request:
    CREATE dir; CHANGE_NOTIFY, fid = compound fid

  Server response:
    CHANGE_NOTIFY STATUS_PENDING, AsyncId = N

After this patchset:

  Server response:
    CREATE dir SUCCESS, fid = X
    CHANGE_NOTIFY STATUS_PENDING, AsyncId = N

ChenXiaoSong (3):
  smb/server: send compound prefix before async pending response
  smb/server: introduce struct ksmbd_transport_write
  smb/server: use MSG_EOR for async interim response

 fs/smb/server/connection.c     | 31 +++++++++++++++++-----
 fs/smb/server/connection.h     | 15 ++++++++---
 fs/smb/server/smb2pdu.c        | 47 +++++++++++++++++++++++++++++++++-
 fs/smb/server/transport_rdma.c |  9 ++++---
 fs/smb/server/transport_tcp.c  | 13 +++++-----
 5 files changed, 95 insertions(+), 20 deletions(-)

-- 
2.54.0