[dm-devel] [PATCH v10 2/8] block: Ues bi_pool for bio_integrity_alloc()
Kent Overstreet
koverstreet at google.com
Thu Sep 6 22:34:56 UTC 2012
Now that bios keep track of where they were allocated from,
bio_integrity_alloc_bioset() becomes redundant.
Remove bio_integrity_alloc_bioset() and drop bio_set argument from the
related functions and make them use bio->bi_pool.
Signed-off-by: Kent Overstreet <koverstreet at google.com>
CC: Jens Axboe <axboe at kernel.dk>
CC: Martin K. Petersen <martin.petersen at oracle.com>
Acked-by: Tejun Heo <tj at kernel.org>
---
block/blk-core.c | 2 +-
drivers/md/dm.c | 4 ++--
drivers/md/md.c | 2 +-
fs/bio-integrity.c | 44 +++++++++++++++-----------------------------
fs/bio.c | 6 +++---
include/linux/bio.h | 9 ++++-----
6 files changed, 26 insertions(+), 41 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index 4b4dbdf..95c4935 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2788,7 +2788,7 @@ int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
__bio_clone(bio, bio_src);
if (bio_integrity(bio_src) &&
- bio_integrity_clone(bio, bio_src, gfp_mask, bs))
+ bio_integrity_clone(bio, bio_src, gfp_mask))
goto free_and_out;
if (bio_ctr && bio_ctr(bio, bio_src, data))
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 0c3d6dd..f43aaf6 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1068,7 +1068,7 @@ static struct bio *split_bvec(struct bio *bio, sector_t sector,
clone->bi_flags |= 1 << BIO_CLONED;
if (bio_integrity(bio)) {
- bio_integrity_clone(clone, bio, GFP_NOIO, bs);
+ bio_integrity_clone(clone, bio, GFP_NOIO);
bio_integrity_trim(clone,
bio_sector_offset(bio, idx, offset), len);
}
@@ -1094,7 +1094,7 @@ static struct bio *clone_bio(struct bio *bio, sector_t sector,
clone->bi_flags &= ~(1 << BIO_SEG_VALID);
if (bio_integrity(bio)) {
- bio_integrity_clone(clone, bio, GFP_NOIO, bs);
+ bio_integrity_clone(clone, bio, GFP_NOIO);
if (idx != bio->bi_idx || clone->bi_size < bio->bi_size)
bio_integrity_trim(clone,
diff --git a/drivers/md/md.c b/drivers/md/md.c
index b8eebe3..457ca84 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -186,7 +186,7 @@ struct bio *bio_clone_mddev(struct bio *bio, gfp_t gfp_mask,
if (bio_integrity(bio)) {
int ret;
- ret = bio_integrity_clone(b, bio, gfp_mask, mddev->bio_set);
+ ret = bio_integrity_clone(b, bio, gfp_mask);
if (ret < 0) {
bio_put(b);
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index e85c04b..a3f28f3 100644
--- a/fs/bio-integrity.c
+++ b/fs/bio-integrity.c
@@ -70,23 +70,25 @@ static inline int use_bip_pool(unsigned int idx)
}
/**
- * bio_integrity_alloc_bioset - Allocate integrity payload and attach it to bio
+ * bio_integrity_alloc - Allocate integrity payload and attach it to bio
* @bio: bio to attach integrity metadata to
* @gfp_mask: Memory allocation mask
* @nr_vecs: Number of integrity metadata scatter-gather elements
- * @bs: bio_set to allocate from
*
* Description: This function prepares a bio for attaching integrity
* metadata. nr_vecs specifies the maximum number of pages containing
* integrity metadata that can be attached.
*/
-struct bio_integrity_payload *bio_integrity_alloc_bioset(struct bio *bio,
- gfp_t gfp_mask,
- unsigned int nr_vecs,
- struct bio_set *bs)
+struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio,
+ gfp_t gfp_mask,
+ unsigned int nr_vecs)
{
struct bio_integrity_payload *bip;
unsigned int idx = vecs_to_idx(nr_vecs);
+ struct bio_set *bs = bio->bi_pool;
+
+ if (!bs)
+ bs = fs_bio_set;
BUG_ON(bio == NULL);
bip = NULL;
@@ -114,37 +116,22 @@ struct bio_integrity_payload *bio_integrity_alloc_bioset(struct bio *bio,
return bip;
}
-EXPORT_SYMBOL(bio_integrity_alloc_bioset);
-
-/**
- * bio_integrity_alloc - Allocate integrity payload and attach it to bio
- * @bio: bio to attach integrity metadata to
- * @gfp_mask: Memory allocation mask
- * @nr_vecs: Number of integrity metadata scatter-gather elements
- *
- * Description: This function prepares a bio for attaching integrity
- * metadata. nr_vecs specifies the maximum number of pages containing
- * integrity metadata that can be attached.
- */
-struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio,
- gfp_t gfp_mask,
- unsigned int nr_vecs)
-{
- return bio_integrity_alloc_bioset(bio, gfp_mask, nr_vecs, fs_bio_set);
-}
EXPORT_SYMBOL(bio_integrity_alloc);
/**
* bio_integrity_free - Free bio integrity payload
* @bio: bio containing bip to be freed
- * @bs: bio_set this bio was allocated from
*
* Description: Used to free the integrity portion of a bio. Usually
* called from bio_free().
*/
-void bio_integrity_free(struct bio *bio, struct bio_set *bs)
+void bio_integrity_free(struct bio *bio)
{
struct bio_integrity_payload *bip = bio->bi_integrity;
+ struct bio_set *bs = bio->bi_pool;
+
+ if (!bs)
+ bs = fs_bio_set;
BUG_ON(bip == NULL);
@@ -730,19 +717,18 @@ EXPORT_SYMBOL(bio_integrity_split);
* @bio: New bio
* @bio_src: Original bio
* @gfp_mask: Memory allocation mask
- * @bs: bio_set to allocate bip from
*
* Description: Called to allocate a bip when cloning a bio
*/
int bio_integrity_clone(struct bio *bio, struct bio *bio_src,
- gfp_t gfp_mask, struct bio_set *bs)
+ gfp_t gfp_mask)
{
struct bio_integrity_payload *bip_src = bio_src->bi_integrity;
struct bio_integrity_payload *bip;
BUG_ON(bip_src == NULL);
- bip = bio_integrity_alloc_bioset(bio, gfp_mask, bip_src->bip_vcnt, bs);
+ bip = bio_integrity_alloc(bio, gfp_mask, bip_src->bip_vcnt);
if (bip == NULL)
return -EIO;
diff --git a/fs/bio.c b/fs/bio.c
index e017f7a..b14f71a 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -241,7 +241,7 @@ void bio_free(struct bio *bio, struct bio_set *bs)
bvec_free_bs(bs, bio->bi_io_vec, BIO_POOL_IDX(bio));
if (bio_integrity(bio))
- bio_integrity_free(bio, bs);
+ bio_integrity_free(bio);
/*
* If we have front padding, adjust the bio pointer before freeing
@@ -341,7 +341,7 @@ EXPORT_SYMBOL(bio_alloc);
static void bio_kmalloc_destructor(struct bio *bio)
{
if (bio_integrity(bio))
- bio_integrity_free(bio, fs_bio_set);
+ bio_integrity_free(bio);
kfree(bio);
}
@@ -480,7 +480,7 @@ struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask)
if (bio_integrity(bio)) {
int ret;
- ret = bio_integrity_clone(b, bio, gfp_mask, fs_bio_set);
+ ret = bio_integrity_clone(b, bio, gfp_mask);
if (ret < 0) {
bio_put(b);
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 2643589..a11f74b 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -505,9 +505,8 @@ static inline struct bio *bio_list_get(struct bio_list *bl)
#define bio_integrity(bio) (bio->bi_integrity != NULL)
-extern struct bio_integrity_payload *bio_integrity_alloc_bioset(struct bio *, gfp_t, unsigned int, struct bio_set *);
extern struct bio_integrity_payload *bio_integrity_alloc(struct bio *, gfp_t, unsigned int);
-extern void bio_integrity_free(struct bio *, struct bio_set *);
+extern void bio_integrity_free(struct bio *);
extern int bio_integrity_add_page(struct bio *, struct page *, unsigned int, unsigned int);
extern int bio_integrity_enabled(struct bio *bio);
extern int bio_integrity_set_tag(struct bio *, void *, unsigned int);
@@ -517,7 +516,7 @@ extern void bio_integrity_endio(struct bio *, int);
extern void bio_integrity_advance(struct bio *, unsigned int);
extern void bio_integrity_trim(struct bio *, unsigned int, unsigned int);
extern void bio_integrity_split(struct bio *, struct bio_pair *, int);
-extern int bio_integrity_clone(struct bio *, struct bio *, gfp_t, struct bio_set *);
+extern int bio_integrity_clone(struct bio *, struct bio *, gfp_t);
extern int bioset_integrity_create(struct bio_set *, int);
extern void bioset_integrity_free(struct bio_set *);
extern void bio_integrity_init(void);
@@ -549,13 +548,13 @@ static inline int bio_integrity_prep(struct bio *bio)
return 0;
}
-static inline void bio_integrity_free(struct bio *bio, struct bio_set *bs)
+static inline void bio_integrity_free(struct bio *bio)
{
return;
}
static inline int bio_integrity_clone(struct bio *bio, struct bio *bio_src,
- gfp_t gfp_mask, struct bio_set *bs)
+ gfp_t gfp_mask)
{
return 0;
}
--
1.7.12
More information about the dm-devel
mailing list