We will support multi-page bvec soon, and have to deal with
single-page vs multi-page bvec. This patch follows Christoph's
suggestion to rename all the following helpers:
for_each_bvec
bvec_iter_bvec
bvec_iter_len
bvec_iter_page
bvec_iter_offset
into:
for_each_segment
segment_iter_bvec
segment_iter_len
segment_iter_page
segment_iter_offset
so that these helpers named with 'segment' only deal with single-page
bvec, or called segment. We will introduce helpers named with 'bvec'
for multi-page bvec.
bvec_iter_advance() isn't renamed becasue this helper is always operated
on real bvec even though multi-page bvec is supported.
Suggested-by: Christoph Hellwig
Signed-off-by: Ming Lei
---
.clang-format | 2 +-
drivers/md/dm-integrity.c | 2 +-
drivers/md/dm-io.c | 4 ++--
drivers/nvdimm/blk.c | 4 ++--
drivers/nvdimm/btt.c | 4 ++--
include/linux/bio.h| 10 +-
include/linux/bvec.h | 20 +++-
include/linux/ceph/messenger.h | 2 +-
lib/iov_iter.c | 2 +-
net/ceph/messenger.c | 14 +++---
10 files changed, 33 insertions(+), 31 deletions(-)
diff --git a/.clang-format b/.clang-format
index e6080f5834a3..049200fbab94 100644
--- a/.clang-format
+++ b/.clang-format
@@ -120,7 +120,7 @@ ForEachMacros:
- 'for_each_available_child_of_node'
- 'for_each_bio'
- 'for_each_board_func_rsrc'
- - 'for_each_bvec'
+ - 'for_each_segment'
- 'for_each_child_of_node'
- 'for_each_clear_bit'
- 'for_each_clear_bit_from'
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index bb3096bf2cc6..bb037ed2b4eb 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -1574,7 +1574,7 @@ static bool __journal_read_write(struct dm_integrity_io
*dio, struct bio *bio,
char *tag_ptr = journal_entry_tag(ic, je);
if (bip) do {
- struct bio_vec biv =
bvec_iter_bvec(bip->bip_vec, bip->bip_iter);
+ struct bio_vec biv =
segment_iter_bvec(bip->bip_vec, bip->bip_iter);
unsigned tag_now = min(biv.bv_len,
tag_todo);
char *tag_addr;
BUG_ON(PageHighMem(biv.bv_page));
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 81ffc59d05c9..d72ec2bdd333 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -208,8 +208,8 @@ static void list_dp_init(struct dpages *dp, struct
page_list *pl, unsigned offse
static void bio_get_page(struct dpages *dp, struct page **p,
unsigned long *len, unsigned *offset)
{
- struct bio_vec bvec = bvec_iter_bvec((struct bio_vec *)dp->context_ptr,
-dp->context_bi);
+ struct bio_vec bvec = segment_iter_bvec((struct bio_vec
*)dp->context_ptr,
+ dp->context_bi);
*p = bvec.bv_page;
*len = bvec.bv_len;
diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c
index db45c6bbb7bb..dfae945216bb 100644
--- a/drivers/nvdimm/blk.c
+++ b/drivers/nvdimm/blk.c
@@ -89,9 +89,9 @@ static int nd_blk_rw_integrity(struct nd_namespace_blk *nsblk,
struct bio_vec bv;
void *iobuf;
- bv = bvec_iter_bvec(bip->bip_vec, bip->bip_iter);
+ bv = segment_iter_bvec(bip->bip_vec, bip->bip_iter);
/*
-* The 'bv' obtained from bvec_iter_bvec has its .bv_len and
+* The 'bv' obtained from segment_iter_bvec has its .bv_len and
* .bv_offset already adjusted for iter->bi_bvec_done, and we
* can use those directly
*/
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index b123b0dcf274..2bbbc90c7b91 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1154,9 +1154,9 @@ static int btt_rw_integrity(struct btt *btt, struct
bio_integrity_payload *bip,
struct bio_vec bv;
void *mem;
- bv = bvec_iter_bvec(bip->bip_vec, bip->bip_iter);
+ bv = segment_iter_bvec(bip->bip_vec, bip->bip_iter);
/*
-* The 'bv' obtained from bvec_iter_bvec has its .bv_len and
+* The 'bv' obtained from segment_iter_bvec has its .bv_len and
* .bv_offset already adjusted for iter->bi_bvec_done, and we
* can use those directly
*/
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 6f6bc331a5d1..6a0ff02f4d1c 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -48,14 +48,14 @@
#define bio_set_prio(bio, prio)((bio)->bi_ioprio = prio)
#define bio_iter_iovec(bio,
