Commit b7a55bbd authored by Long Li's avatar Long Li Committed by Steve French
Browse files

cifs: smbd: Invalidate and deregister memory registration on re-send for direct I/O 



On re-send, there might be a reconnect and all prevoius memory registrations
need to be invalidated and deregistered.

Signed-off-by: default avatarLong Li <longli@microsoft.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 14cc639c

fs/cifs/file.c

+18 −2
Original line number Diff line number Diff line
@@ -2803,10 +2803,18 @@ 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 */

		if (!rc) {
@@ -3528,9 +3536,17 @@ 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);

			}

		}



		/* If the read was successfully sent, we are done */

		if (!rc) {

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