tree b37b3402f7eb55e9f899d63faf1e2ec520c0a3c7
parent d6ceb25e8d8bccf826848c2621a50d02c0a7f4ae
author FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> 1239645790 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1239790211 +0200

block: fix SG_IO to return a proper error value

blk_rq_unmap_user() returns -EFAULT if a program passes an invalid
address to kernel. SG_IO path needs to pass the returned value to user
space instead of ignoring it.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>