linux/block/bio.c
Al Viro ed35ded9c7 bio_copy_user_iov(): don't ignore ->iov_offset
commit 1cfd0ddd82 upstream.

Since "block: support large requests in blk_rq_map_user_iov" we
started to call it with partially drained iter; that works fine
on the write side, but reads create a copy of iter for completion
time.  And that needs to take the possibility of ->iov_iter != 0
into account...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-18 09:35:41 +02:00

2083 lines
49 KiB