block: Convert bio_iovec() to bvec_iter
For immutable biovecs, we'll be introducing a new bio_iovec() that uses
our new bvec iterator to construct a biovec, taking into account
bvec_iter->bi_bvec_done - this patch updates existing users for the new
usage.
Some of the existing users really do need a pointer into the bvec array
- those uses are all going to be removed, but we'll need the
functionality from immutable to remove them - so for now rename the
existing bio_iovec() -> __bio_iovec(), and it'll be removed in a couple
patches.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: "Ed L. Cashin" <ecashin@coraid.com>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: dm-devel@redhat.com
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index 877ba11..77c24ab 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -932,7 +932,7 @@
buf->resid = bio->bi_iter.bi_size;
buf->sector = bio->bi_iter.bi_sector;
bio_pageinc(bio);
- buf->bv = bio_iovec(bio);
+ buf->bv = __bio_iovec(bio);
buf->bv_resid = buf->bv->bv_len;
WARN_ON(buf->bv_resid == 0);
}
diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c
index cc4ba2d..dc44f06 100644
--- a/drivers/md/bcache/io.c
+++ b/drivers/md/bcache/io.c
@@ -22,11 +22,12 @@
static void bch_generic_make_request_hack(struct bio *bio)
{
if (bio->bi_iter.bi_idx) {
+ int i;
+ struct bio_vec *bv;
struct bio *clone = bio_alloc(GFP_NOIO, bio_segments(bio));
- memcpy(clone->bi_io_vec,
- bio_iovec(bio),
- bio_segments(bio) * sizeof(struct bio_vec));
+ bio_for_each_segment(bv, bio, i)
+ clone->bi_io_vec[clone->bi_vcnt++] = *bv;
clone->bi_iter.bi_sector = bio->bi_iter.bi_sector;
clone->bi_bdev = bio->bi_bdev;
@@ -97,7 +98,7 @@
if (!ret)
return NULL;
- memcpy(ret->bi_io_vec, bio_iovec(bio),
+ memcpy(ret->bi_io_vec, __bio_iovec(bio),
sizeof(struct bio_vec) * vcnt);
break;
@@ -106,7 +107,7 @@
if (!ret)
return NULL;
- memcpy(ret->bi_io_vec, bio_iovec(bio),
+ memcpy(ret->bi_io_vec, __bio_iovec(bio),
sizeof(struct bio_vec) * vcnt);
ret->bi_io_vec[vcnt - 1].bv_len = nbytes;
@@ -182,7 +183,7 @@
ret = min(ret, queue_max_sectors(q));
WARN_ON(!ret);
- ret = max_t(int, ret, bio_iovec(bio)->bv_len >> 9);
+ ret = max_t(int, ret, bio_iovec(bio).bv_len >> 9);
return ret;
}
diff --git a/drivers/md/dm-verity.c b/drivers/md/dm-verity.c
index 132b315..53921359 100644
--- a/drivers/md/dm-verity.c
+++ b/drivers/md/dm-verity.c
@@ -524,7 +524,7 @@
io->io_vec = io->io_vec_inline;
else
io->io_vec = mempool_alloc(v->vec_mempool, GFP_NOIO);
- memcpy(io->io_vec, bio_iovec(bio),
+ memcpy(io->io_vec, __bio_iovec(bio),
io->io_vec_size * sizeof(struct bio_vec));
verity_submit_prefetch(v, io);
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index e6c4bff..200d6bc 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -801,7 +801,7 @@
if (sdkp->device->no_write_same)
return BLKPREP_KILL;
- BUG_ON(bio_offset(bio) || bio_iovec(bio)->bv_len != sdp->sector_size);
+ BUG_ON(bio_offset(bio) || bio_iovec(bio).bv_len != sdp->sector_size);
sector >>= ilog2(sdp->sector_size) - 9;
nr_sectors >>= ilog2(sdp->sector_size) - 9;
