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/fs/bio.c b/fs/bio.c
index a402ad6..7bb281f 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -821,12 +821,12 @@
break;
}
- if (bytes >= bio_iovec(bio)->bv_len) {
- bytes -= bio_iovec(bio)->bv_len;
+ if (bytes >= bio_iovec(bio).bv_len) {
+ bytes -= bio_iovec(bio).bv_len;
bio->bi_iter.bi_idx++;
} else {
- bio_iovec(bio)->bv_len -= bytes;
- bio_iovec(bio)->bv_offset += bytes;
+ bio_iovec(bio).bv_len -= bytes;
+ bio_iovec(bio).bv_offset += bytes;
bytes = 0;
}
}
@@ -879,8 +879,8 @@
unsigned src_offset, dst_offset, bytes;
void *src_p, *dst_p;
- src_bv = bio_iovec(src);
- dst_bv = bio_iovec(dst);
+ src_bv = __bio_iovec(src);
+ dst_bv = __bio_iovec(dst);
src_offset = src_bv->bv_offset;
dst_offset = dst_bv->bv_offset;
@@ -893,7 +893,7 @@
if (!src)
break;
- src_bv = bio_iovec(src);
+ src_bv = __bio_iovec(src);
}
src_offset = src_bv->bv_offset;
@@ -906,7 +906,7 @@
if (!dst)
break;
- dst_bv = bio_iovec(dst);
+ dst_bv = __bio_iovec(dst);
}
dst_offset = dst_bv->bv_offset;
@@ -1776,8 +1776,8 @@
bp->bio1.bi_iter.bi_size = first_sectors << 9;
if (bi->bi_vcnt != 0) {
- bp->bv1 = *bio_iovec(bi);
- bp->bv2 = *bio_iovec(bi);
+ bp->bv1 = bio_iovec(bi);
+ bp->bv2 = bio_iovec(bi);
if (bio_is_rw(bi)) {
bp->bv2.bv_offset += first_sectors << 9;