cifs: smbd: Retry on memory registration failure (b7972092) · Commits · 戴 / test

Memory registration failure doesn't mean this I/O has failed, it means the transport is hitting I/O error or needs reconnect. This error is not from the server. Indicate this error to upper layer, and let upper layer decide how to reconnect and proceed with this I/O. Signed-off-by:

Long Li <longli@microsoft.com> Signed-off-by:

Steve French <stfrench@microsoft.com>

fs/cifs/smb2pdu.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -3223,7 +3223,7 @@ smb2_new_read_req(void *buf, unsigned int total_len,
		rdata->nr_pages, rdata->page_offset,
		rdata->tailsz, true, need_invalidate);
		if (!rdata->mr)
		return -ENOBUFS;
		return -EAGAIN;

		req->Channel = SMB2_CHANNEL_RDMA_V1_INVALIDATE;
		if (need_invalidate)
		@@ -3628,7 +3628,7 @@ smb2_async_writev(struct cifs_writedata *wdata,
		wdata->nr_pages, wdata->page_offset,
		wdata->tailsz, false, need_invalidate);
		if (!wdata->mr) {
		rc = -ENOBUFS;
		rc = -EAGAIN;
		goto async_writev_out;
		}
		req->Length = 0;

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