tree da8364a6cc8f924a8edcd34605c209d2e5a7bd74
parent fd1aa12c63400ca7d5b6d189ae98570f47735180
author Linus Torvalds <torvalds@linux-foundation.org> 1481069894 -0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1481393246 +0100

Don't feed anything but regular iovec's to blk_rq_map_user_iov

commit a0ac402cfcdc904f9772e1762b3fda112dcc56a0 upstream.

In theory we could map other things, but there's a reason that function
is called "user_iov".  Using anything else (like splice can do) just
confuses it.

Reported-and-tested-by: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>