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authorKent Overstreet <koverstreet@google.com>2013-02-06 12:23:11 -0800
committerKent Overstreet <koverstreet@google.com>2013-03-23 14:26:28 -0700
commitd74c6d514fe314b8bdab58b487b25992291577ec (patch)
tree2e04cd492235dc7982bae1ba7ef83f276800c319 /fs
parent6bc454d150047fcfbf53346412e64cdf3bf61a79 (diff)
downloadlinux-d74c6d514fe314b8bdab58b487b25992291577ec.tar.bz2
block: Add bio_for_each_segment_all()
__bio_for_each_segment() iterates bvecs from the specified index instead of bio->bv_idx. Currently, the only usage is to walk all the bvecs after the bio has been advanced by specifying 0 index. For immutable bvecs, we need to split these apart; bio_for_each_segment() is going to have a different implementation. This will also help document the intent of code that's using it - bio_for_each_segment_all() is only legal to use for code that owns the bio. Signed-off-by: Kent Overstreet <koverstreet@google.com> CC: Jens Axboe <axboe@kernel.dk> CC: Neil Brown <neilb@suse.de> CC: Boaz Harrosh <bharrosh@panasas.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/bio.c12
-rw-r--r--fs/exofs/ore.c2
-rw-r--r--fs/exofs/ore_raid.c2
3 files changed, 8 insertions, 8 deletions
diff --git a/fs/bio.c b/fs/bio.c
index e437f9aae67d..618f9044c414 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -961,7 +961,7 @@ static int __bio_copy_iov(struct bio *bio, struct bio_vec *iovecs,
int iov_idx = 0;
unsigned int iov_off = 0;
- __bio_for_each_segment(bvec, bio, i, 0) {
+ bio_for_each_segment_all(bvec, bio, i) {
char *bv_addr = page_address(bvec->bv_page);
unsigned int bv_len = iovecs[i].bv_len;
@@ -1143,7 +1143,7 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
return bio;
cleanup:
if (!map_data)
- bio_for_each_segment(bvec, bio, i)
+ bio_for_each_segment_all(bvec, bio, i)
__free_page(bvec->bv_page);
bio_put(bio);
@@ -1357,7 +1357,7 @@ static void __bio_unmap_user(struct bio *bio)
/*
* make sure we dirty pages we wrote to
*/
- __bio_for_each_segment(bvec, bio, i, 0) {
+ bio_for_each_segment_all(bvec, bio, i) {
if (bio_data_dir(bio) == READ)
set_page_dirty_lock(bvec->bv_page);
@@ -1463,7 +1463,7 @@ static void bio_copy_kern_endio(struct bio *bio, int err)
int i;
char *p = bmd->sgvecs[0].iov_base;
- __bio_for_each_segment(bvec, bio, i, 0) {
+ bio_for_each_segment_all(bvec, bio, i) {
char *addr = page_address(bvec->bv_page);
int len = bmd->iovecs[i].bv_len;
@@ -1503,7 +1503,7 @@ struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len,
if (!reading) {
void *p = data;
- bio_for_each_segment(bvec, bio, i) {
+ bio_for_each_segment_all(bvec, bio, i) {
char *addr = page_address(bvec->bv_page);
memcpy(addr, p, bvec->bv_len);
@@ -1789,7 +1789,7 @@ sector_t bio_sector_offset(struct bio *bio, unsigned short index,
if (index >= bio->bi_idx)
index = bio->bi_vcnt - 1;
- __bio_for_each_segment(bv, bio, i, 0) {
+ bio_for_each_segment_all(bv, bio, i) {
if (i == index) {
if (offset > bv->bv_offset)
sectors += (offset - bv->bv_offset) / sector_sz;
diff --git a/fs/exofs/ore.c b/fs/exofs/ore.c
index f936cb50dc0d..b74422888604 100644
--- a/fs/exofs/ore.c
+++ b/fs/exofs/ore.c
@@ -401,7 +401,7 @@ static void _clear_bio(struct bio *bio)
struct bio_vec *bv;
unsigned i;
- __bio_for_each_segment(bv, bio, i, 0) {
+ bio_for_each_segment_all(bv, bio, i) {
unsigned this_count = bv->bv_len;
if (likely(PAGE_SIZE == this_count))
diff --git a/fs/exofs/ore_raid.c b/fs/exofs/ore_raid.c
index b963f38ac298..7682b970d0f1 100644
--- a/fs/exofs/ore_raid.c
+++ b/fs/exofs/ore_raid.c
@@ -432,7 +432,7 @@ static void _mark_read4write_pages_uptodate(struct ore_io_state *ios, int ret)
if (!bio)
continue;
- __bio_for_each_segment(bv, bio, i, 0) {
+ bio_for_each_segment_all(bv, bio, i) {
struct page *page = bv->bv_page;
SetPageUptodate(page);