From: Long Li longli@microsoft.com
On re-send, there might be a reconnect and all prevoius memory registrations need to be invalidated and deregistered.
Signed-off-by: Long Li longli@microsoft.com Cc: stable@vger.kernel.org --- fs/cifs/file.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 4b95700c507c..3c4e01e56798 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2747,9 +2747,17 @@ cifs_resend_wdata(struct cifs_writedata *wdata, struct list_head *wdata_list, if (!rc) { if (wdata->cfile->invalidHandle) rc = -EAGAIN; - else + else { +#ifdef CONFIG_CIFS_SMB_DIRECT + if (wdata->mr) { + wdata->mr->need_invalidate = true; + smbd_deregister_mr(wdata->mr); + wdata->mr = NULL; + } +#endif rc = server->ops->async_writev(wdata, cifs_uncached_writedata_release); + } }
/* If the write was successfully sent, we are done */ @@ -3472,7 +3480,14 @@ static int cifs_resend_rdata(struct cifs_readdata *rdata, if (!rc) { if (rdata->cfile->invalidHandle) rc = -EAGAIN; - else + else { +#ifdef CONFIG_CIFS_SMB_DIRECT + if (rdata->mr) { + rdata->mr->need_invalidate = true; + smbd_deregister_mr(rdata->mr); + rdata->mr = NULL; + } +#endif rc = server->ops->async_readv(rdata); }