| From | Kent Overstreet <> | Subject | [PATCH v4 03/24] md: Convert md_trim_bio() to use bio_advance() | Date | Mon, 15 Oct 2012 13:08:37 -0700 |
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Signed-off-by: Kent Overstreet <koverstreet@google.com> CC: Jens Axboe <axboe@kernel.dk> CC: NeilBrown <neilb@suse.de> Acked-by: NeilBrown <neilb@suse.de> --- drivers/md/md.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c index 7a2b079..404a0ba 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -194,21 +194,12 @@ void md_trim_bio(struct bio *bio, int offset, int size) if (offset == 0 && size == bio->bi_size) return; - bio->bi_sector += offset; - bio->bi_size = size; - offset <<= 9; clear_bit(BIO_SEG_VALID, &bio->bi_flags); - while (bio->bi_idx < bio->bi_vcnt && - bio->bi_io_vec[bio->bi_idx].bv_len <= offset) { - /* remove this whole bio_vec */ - offset -= bio->bi_io_vec[bio->bi_idx].bv_len; - bio->bi_idx++; - } - if (bio->bi_idx < bio->bi_vcnt) { - bio->bi_io_vec[bio->bi_idx].bv_offset += offset; - bio->bi_io_vec[bio->bi_idx].bv_len -= offset; - } + bio_advance(bio, offset << 9); + + bio->bi_size = size; + /* avoid any complications with bi_idx being non-zero*/ if (bio->bi_idx) { memmove(bio->bi_io_vec, bio->bi_io_vec+bio->bi_idx, -- 1.7.12
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