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.
Signed-off-by: Kent Overstreet <koverstreet@xxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: "Ed L. Cashin" <ecashin@xxxxxxxxxx>
Cc: Alasdair Kergon <agk@xxxxxxxxxx>
Cc: dm-devel@xxxxxxxxxx
Cc: "James E.J. Bottomley" <JBottomley@xxxxxxxxxxxxx>
---
drivers/block/aoe/aoecmd.c | 2 +-
drivers/md/dm-verity.c | 2 +-
drivers/scsi/sd.c | 2 +-
fs/bio.c | 20 ++++++++++----------
include/linux/bio.h | 10 ++++++----
5 files changed, 19 insertions(+), 17 deletions(-)
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index 039ce17..80e5d65 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -927,7 +927,7 @@ bufinit(struct buf *buf, struct request *rq, struct bio *bio)
buf->resid = bio->bi_iter.bi_size;
buf->sector = bio->bi_iter.bi_sector;
bio_pageinc(bio);
- buf->bv = bv = bio_iovec(bio);
+ buf->bv = bv = __bio_iovec(bio);
buf->bv_resid = bv->bv_len;
WARN_ON(buf->bv_resid == 0);
}
diff --git a/drivers/md/dm-verity.c b/drivers/md/dm-verity.c
index b17233a..782ee42 100644
--- a/drivers/md/dm-verity.c
+++ b/drivers/md/dm-verity.c
@@ -496,7 +496,7 @@ static int verity_map(struct dm_target *ti, struct bio *bio)
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_prefetch_io(v, io);
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 7992635..5e0d12c 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -771,7 +771,7 @@ static int sd_setup_write_same_cmnd(struct scsi_device *sdp, struct request *rq)
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;
diff --git a/fs/bio.c b/fs/bio.c
index 85dcc10..8543f85 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -820,12 +820,12 @@ void bio_advance(struct bio *bio, unsigned bytes)
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;
}
}
@@ -878,8 +878,8 @@ void bio_copy_data(struct bio *dst, struct bio *src)
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;
@@ -892,7 +892,7 @@ void bio_copy_data(struct bio *dst, struct bio *src)
if (!src)
break;
- src_bv = bio_iovec(src);
+ src_bv = __bio_iovec(src);
}
src_offset = src_bv->bv_offset;
@@ -905,7 +905,7 @@ void bio_copy_data(struct bio *dst, struct bio *src)
if (!dst)
break;
- dst_bv = bio_iovec(dst);
+ dst_bv = __bio_iovec(dst);
}
dst_offset = dst_bv->bv_offset;
@@ -1767,8 +1767,8 @@ struct bio_pair *bio_split(struct bio *bi, int first_sectors)
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;
diff --git a/include/linux/bio.h b/include/linux/bio.h
index d321e63..580c9ae 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -62,9 +62,11 @@
* on highmem page vectors
*/
#define bio_iovec_idx(bio, idx) (&((bio)->bi_io_vec[(idx)]))
-#define bio_iovec(bio) bio_iovec_idx((bio), (bio)->bi_iter.bi_idx)
-#define bio_page(bio) bio_iovec((bio))->bv_page
-#define bio_offset(bio) bio_iovec((bio))->bv_offset
+#define __bio_iovec(bio) bio_iovec_idx((bio), (bio)->bi_iter.bi_idx)
+#define bio_iovec(bio) (*__bio_iovec(bio))
+
+#define bio_page(bio) (bio_iovec((bio)).bv_page)
+#define bio_offset(bio) (bio_iovec((bio)).bv_offset)
#define bio_segments(bio) ((bio)->bi_vcnt - (bio)->bi_iter.bi_idx)
#define bio_sectors(bio) ((bio)->bi_iter.bi_size >> 9)
#define bio_end_sector(bio) ((bio)->bi_iter.bi_sector + bio_sectors((bio)))
@@ -72,7 +74,7 @@
static inline unsigned int bio_cur_bytes(struct bio *bio)
{
if (bio->bi_vcnt)
- return bio_iovec(bio)->bv_len;
+ return bio_iovec(bio).bv_len;
else /* dataless requests such as discard */
return bio->bi_iter.bi_size;
}
--
1.8.1.3
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