From b7972092199f6d4eb10cc44095bbe3931116fc4b Mon Sep 17 00:00:00 2001 From: Long Li Date: Fri, 5 Apr 2019 21:36:34 +0000 Subject: [PATCH] cifs: smbd: Retry on memory registration failure 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 Signed-off-by: Steve French --- fs/cifs/smb2pdu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index a37774a55f3a..36cc34318429 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -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;