From 038bc961c31b070269ecd07349a7ee2e839d4fec Mon Sep 17 00:00:00 2001 From: Pavel Shilovsky Date: Fri, 27 Jun 2014 10:33:11 +0400 Subject: [PATCH] CIFS: Fix async reading on reconnects If we get into read_into_pages() from cifs_readv_receive() and then loose a network, we issue cifs_reconnect that moves all mids to a private list and issue their callbacks. The callback of the async read request sets a mid to retry, frees it and wakes up a process that waits on the rdata completion. After the connection is established we return from read_into_pages() with a short read, use the mid that was freed before and try to read the remaining data from the a newly created socket. Both actions are not what we want to do. In reconnect cases (-EAGAIN) we should not mask off the error with a short read but should return the error code instead. Acked-by: Jeff Layton Cc: stable@vger.kernel.org Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French --- Reading git-format-patch failed