tree edc02bd18838d00eda817b46ca530df237b8df75
parent d16d44ebb016792285ec1b9566dbd9d022ce70f9
author Al Viro <viro@zeniv.linux.org.uk> 1506273275 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1507757023 -0400

bio_alloc_map_data(): do bmd->iter setup right there

just need to copy it iter instead of iter->nr_segs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>