From: Pavel Shilovsky Date: Fri, 27 Jun 2014 06:33:11 +0000 (+0400) Subject: CIFS: Fix async reading on reconnects X-Git-Tag: cleanup-for-v3.18~61^2~29 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=038bc961c31b070269ecd07349a7ee2e839d4fec;p=pandora-kernel.git 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-diff-tree failed