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    SubjectRe: [PATCH v2 21/26] block: Convert some code to bio_for_each_segment_all()
    On Mon, Sep 10, 2012 at 05:22:32PM -0700, Kent Overstreet wrote:
    > A few places in the code were either open coding or using the wrong
    > version - fix.
    >
    > Signed-off-by: Kent Overstreet <koverstreet@google.com>
    > CC: Jens Axboe <axboe@kernel.dk>
    > CC: NeilBrown <neilb@suse.de>
    > ---
    > --- a/drivers/md/raid1.c
    > +++ b/drivers/md/raid1.c
    > @@ -921,7 +921,7 @@ static void alloc_behind_pages(struct bio *bio, struct r1bio *r1_bio)
    > if (unlikely(!bvecs))
    > return;
    >
    > - bio_for_each_segment(bvec, bio, i) {
    > + bio_for_each_segment_all(bvec, bio, i) {

    I don't get this conversion. Why is this necessary?

    --
    tejun


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