block: Convert some code to bio_for_each_segment_all()
authorKent Overstreet <koverstreet@google.com>
Wed, 5 Sep 2012 22:22:02 +0000 (15:22 -0700)
committerKent Overstreet <koverstreet@google.com>
Sat, 23 Mar 2013 21:26:30 +0000 (14:26 -0700)
commitcb34e057ad22a1c2c6f2cb6cd1cbd05cc2f28f28
tree4077b8e6e88bc7c5eb4cd738b4203401daba28a9
parentd74c6d514fe314b8bdab58b487b25992291577ec
block: Convert some code to bio_for_each_segment_all()

More prep work for immutable bvecs:

A few places in the code were either open coding or using the wrong
version - fix.

After we introduce the bvec iter, it'll no longer be possible to modify
the biovec through bio_for_each_segment_all() - it doesn't increment a
pointer to the current bvec, you pass in a struct bio_vec (not a
pointer) which is updated with what the current biovec would be (taking
into account bi_bvec_done and bi_size).

So because of that it's more worthwhile to be consistent about
bio_for_each_segment()/bio_for_each_segment_all() usage.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
CC: NeilBrown <neilb@suse.de>
CC: Alasdair Kergon <agk@redhat.com>
CC: dm-devel@redhat.com
CC: Alexander Viro <viro@zeniv.linux.org.uk>
drivers/md/dm-crypt.c
drivers/md/raid1.c
fs/bio.c
fs/direct-io.c
mm/bounce.c