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Reload this Page block: Add an explicit bio flag for bios that own their bvec

 
 
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Old 05-24-2012, 12:02 AM
Kent Overstreet
 
Default block: Add an explicit bio flag for bios that own their bvec
This is for the new bio splitting code. When we split a bio, if the
split occured on a bvec boundry we reuse the bvec for the new bio. But
that means bio_free() can't free it, hence the explicit flag.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
Change-Id: I040f6b501088e882a9f013d6b6e730ff04e9c1da
---
fs/bio.c | 3 ++-
include/linux/bio.h | 5 -----
include/linux/blk_types.h | 1 +
3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/fs/bio.c b/fs/bio.c
index fc4a168..24b1d1c 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -241,7 +241,7 @@ void bio_free(struct bio *bio, struct bio_set *bs)
return;
}

- if (bio_has_allocated_vec(bio))
+ if (bio_flagged(bio, BIO_HAS_VEC))
bvec_free_bs(bs, bio->bi_io_vec, BIO_POOL_IDX(bio));

if (bio_integrity(bio))
@@ -312,6 +312,7 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
goto err_free;

nr_iovecs = bvec_nr_vecs(idx);
+ bio->bi_flags |= 1 << BIO_HAS_VEC;
}
out_set:
bio->bi_flags |= idx << BIO_POOL_OFFSET;
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 35f7c4d..8dd8cae 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -84,11 +84,6 @@ static inline void *bio_data(struct bio *bio)
return NULL;
}

-static inline int bio_has_allocated_vec(struct bio *bio)
-{
- return bio->bi_io_vec && bio->bi_io_vec != bio->bi_inline_vecs;
-}
-
/*
* will die
*/
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index b6ddbf1..ab2252d 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -101,6 +101,7 @@ struct bio {
#define BIO_FS_INTEGRITY 9 /* fs owns integrity data, not block layer */
#define BIO_QUIET 10 /* Make BIO Quiet */
#define BIO_MAPPED_INTEGRITY 11/* integrity metadata has been remapped */
+#define BIO_HAS_VEC 12 /* bio_free() should free bvec */
#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))

/*
--
1.7.9.3.327.g2980b

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Old 05-25-2012, 08:25 PM
Kent Overstreet
 
Default block: Add an explicit bio flag for bios that own their bvec
This is for the new bio splitting code. When we split a bio, if the
split occured on a bvec boundry we reuse the bvec for the new bio. But
that means bio_free() can't free it, hence the explicit flag.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
Change-Id: I040f6b501088e882a9f013d6b6e730ff04e9c1da
---
fs/bio.c | 3 ++-
include/linux/bio.h | 5 -----
include/linux/blk_types.h | 1 +
3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/fs/bio.c b/fs/bio.c
index 4075171..692911e 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -243,7 +243,7 @@ static void bio_free(struct bio *bio)
return;
}

- if (bio_has_allocated_vec(bio))
+ if (bio_flagged(bio, BIO_OWNS_VEC))
bvec_free_bs(bs, bio->bi_io_vec, BIO_POOL_IDX(bio));

if (bio_integrity(bio))
@@ -313,6 +313,7 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
goto err_free;

nr_iovecs = bvec_nr_vecs(idx);
+ bio->bi_flags |= 1 << BIO_OWNS_VEC;
}
out_set:
bio->bi_flags |= idx << BIO_POOL_OFFSET;
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 242447c..9e89f5e 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -84,11 +84,6 @@ static inline void *bio_data(struct bio *bio)
return NULL;
}

-static inline int bio_has_allocated_vec(struct bio *bio)
-{
- return bio->bi_io_vec && bio->bi_io_vec != bio->bi_inline_vecs;
-}
-
/*
* will die
*/
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index b6ddbf1..5ad45bf 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -101,6 +101,7 @@ struct bio {
#define BIO_FS_INTEGRITY 9 /* fs owns integrity data, not block layer */
#define BIO_QUIET 10 /* Make BIO Quiet */
#define BIO_MAPPED_INTEGRITY 11/* integrity metadata has been remapped */
+#define BIO_OWNS_VEC 12 /* bio_free() should free bvec */
#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))

/*
--
1.7.9.3.327.g2980b

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Old 07-24-2012, 08:11 PM
Kent Overstreet
 
Default block: Add an explicit bio flag for bios that own their bvec
This is for the new bio splitting code. When we split a bio, if the
split occured on a bvec boundry we reuse the bvec for the new bio. But
that means bio_free() can't free it, hence the explicit flag.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
---
fs/bio.c | 3 ++-
include/linux/bio.h | 5 -----
include/linux/blk_types.h | 1 +
3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/fs/bio.c b/fs/bio.c
index a301071..2631d0b 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -250,7 +250,7 @@ void bio_free(struct bio *bio)
return;
}

- if (bio_has_allocated_vec(bio))
+ if (bio_flagged(bio, BIO_OWNS_VEC))
bvec_free_bs(bs, bio->bi_io_vec, BIO_POOL_IDX(bio));

if (bio_integrity(bio))
@@ -323,6 +323,7 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
goto err_free;

nr_iovecs = bvec_nr_vecs(idx);
+ bio->bi_flags |= 1 << BIO_OWNS_VEC;
}
out_set:
bio->bi_flags |= idx << BIO_POOL_OFFSET;
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 393c87e..484b96e 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -84,11 +84,6 @@ static inline void *bio_data(struct bio *bio)
return NULL;
}

-static inline int bio_has_allocated_vec(struct bio *bio)
-{
- return bio->bi_io_vec && bio->bi_io_vec != bio->bi_inline_vecs;
-}
-
/*
* will die
*/
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index fa45a12..44245af 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -111,6 +111,7 @@ struct bio {
#define BIO_FS_INTEGRITY 9 /* fs owns integrity data, not block layer */
#define BIO_QUIET 10 /* Make BIO Quiet */
#define BIO_MAPPED_INTEGRITY 11/* integrity metadata has been remapped */
+#define BIO_OWNS_VEC 12 /* bio_free() should free bvec */
#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))

/*
--
1.7.7.3

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Old 08-06-2012, 10:08 PM
Kent Overstreet
 
Default block: Add an explicit bio flag for bios that own their bvec
This is for the new bio splitting code. When we split a bio, if the
split occured on a bvec boundry we reuse the bvec for the new bio. But
that means bio_free() can't free it, hence the explicit flag.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
---
fs/bio.c | 3 ++-
include/linux/bio.h | 5 -----
include/linux/blk_types.h | 1 +
3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/fs/bio.c b/fs/bio.c
index ebc7309..ff34311 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -249,7 +249,7 @@ void bio_free(struct bio *bio)
return;
}

- if (bio_has_allocated_vec(bio))
+ if (bio_flagged(bio, BIO_OWNS_VEC))
bvec_free_bs(bs, bio->bi_io_vec, BIO_POOL_IDX(bio));

if (bio_integrity(bio))
@@ -321,6 +321,7 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
goto err_free;

nr_iovecs = bvec_nr_vecs(idx);
+ bio->bi_flags |= 1 << BIO_OWNS_VEC;
}
out_set:
bio->bi_flags |= idx << BIO_POOL_OFFSET;
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 393c87e..484b96e 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -84,11 +84,6 @@ static inline void *bio_data(struct bio *bio)
return NULL;
}

-static inline int bio_has_allocated_vec(struct bio *bio)
-{
- return bio->bi_io_vec && bio->bi_io_vec != bio->bi_inline_vecs;
-}
-
/*
* will die
*/
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index d10c2e49..416aae4 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -113,6 +113,7 @@ struct bio {
#define BIO_MAPPED_INTEGRITY 11/* integrity metadata has been remapped */

#define BIO_RESET_BITS 12 /* Flags starting here get preserved by bio_reset() */
+#define BIO_OWNS_VEC 12 /* bio_free() should free bvec */

#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))

--
1.7.7.3

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Old 08-22-2012, 05:04 PM
Kent Overstreet
 
Default block: Add an explicit bio flag for bios that own their bvec
This is for the new bio splitting code. When we split a bio, if the
split occured on a bvec boundry we reuse the bvec for the new bio. But
that means bio_free() can't free it, hence the explicit flag.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
Acked-by: Tejun Heo <tj@kernel.org>
---
fs/bio.c | 4 +++-
include/linux/bio.h | 5 -----
include/linux/blk_types.h | 1 +
3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/fs/bio.c b/fs/bio.c
index a82a3c7..b9c022c 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -246,7 +246,7 @@ void bio_free(struct bio *bio)
return;
}

- if (bio_has_allocated_vec(bio))
+ if (bio_flagged(bio, BIO_OWNS_VEC))
bvec_free_bs(bs, bio->bi_io_vec, BIO_POOL_IDX(bio));

if (bio_integrity(bio))
@@ -365,6 +365,8 @@ retry:
bvl = bvec_alloc_bs(gfp_mask, nr_iovecs, &idx, bs);
if (unlikely(!bvl))
goto err_free;
+
+ bio->bi_flags |= 1 << BIO_OWNS_VEC;
} else if (nr_iovecs) {
bvl = bio->bi_inline_vecs;
}
diff --git a/include/linux/bio.h b/include/linux/bio.h
index ba5b52e..427d05a 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -84,11 +84,6 @@ static inline void *bio_data(struct bio *bio)
return NULL;
}

-static inline int bio_has_allocated_vec(struct bio *bio)
-{
- return bio->bi_io_vec && bio->bi_io_vec != bio->bi_inline_vecs;
-}
-
/*
* will die
*/
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 045ebe0..c1878bd 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -117,6 +117,7 @@ struct bio {
* BIO_POOL_IDX()
*/
#define BIO_RESET_BITS 12
+#define BIO_OWNS_VEC 12 /* bio_free() should free bvec */

#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))

--
1.7.12

--
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Old 09-11-2012, 12:22 AM
Kent Overstreet
 
Default block: Add an explicit bio flag for bios that own their bvec
This is for the new bio splitting code. When we split a bio, if the
split occured on a bvec boundry we reuse the bvec for the new bio. But
that means bio_free() can't free it, hence the explicit flag.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
Acked-by: Tejun Heo <tj@kernel.org>
---
fs/bio.c | 4 +++-
include/linux/bio.h | 5 -----
include/linux/blk_types.h | 1 +
3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/fs/bio.c b/fs/bio.c
index 65e6eac..5e91e36 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -250,7 +250,7 @@ static void bio_free(struct bio *bio)
__bio_free(bio);

if (bs) {
- if (bio_has_allocated_vec(bio))
+ if (bio_flagged(bio, BIO_OWNS_VEC))
bvec_free_bs(bs, bio->bi_io_vec, BIO_POOL_IDX(bio));

/*
@@ -449,6 +449,8 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)

if (unlikely(!bvl))
goto err_free;
+
+ bio->bi_flags |= 1 << BIO_OWNS_VEC;
} else if (nr_iovecs) {
bvl = bio->bi_inline_vecs;
}
diff --git a/include/linux/bio.h b/include/linux/bio.h
index bd45154..edd66f3 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -85,11 +85,6 @@ static inline void *bio_data(struct bio *bio)
return NULL;
}

-static inline int bio_has_allocated_vec(struct bio *bio)
-{
- return bio->bi_io_vec && bio->bi_io_vec != bio->bi_inline_vecs;
-}
-
/*
* will die
*/
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 3eefbb2..e9375cf 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -117,6 +117,7 @@ struct bio {
* BIO_POOL_IDX()
*/
#define BIO_RESET_BITS 12
+#define BIO_OWNS_VEC 12 /* bio_free() should free bvec */

#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))

--
1.7.12

--
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Old 09-24-2012, 10:35 PM
Kent Overstreet
 
Default block: Add an explicit bio flag for bios that own their bvec
This is for the new bio splitting code. When we split a bio, if the
split occured on a bvec boundry we reuse the bvec for the new bio. But
that means bio_free() can't free it, hence the explicit flag.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
Acked-by: Tejun Heo <tj@kernel.org>
---
fs/bio.c | 4 +++-
include/linux/bio.h | 5 -----
include/linux/blk_types.h | 1 +
3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/fs/bio.c b/fs/bio.c
index 8e10d49..00639e6 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -250,7 +250,7 @@ static void bio_free(struct bio *bio)
__bio_free(bio);

if (bs) {
- if (bio_has_allocated_vec(bio))
+ if (bio_flagged(bio, BIO_OWNS_VEC))
bvec_free_bs(bs->bvec_pool, bio->bi_io_vec, BIO_POOL_IDX(bio));

/*
@@ -449,6 +449,8 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)

if (unlikely(!bvl))
goto err_free;
+
+ bio->bi_flags |= 1 << BIO_OWNS_VEC;
} else if (nr_iovecs) {
bvl = bio->bi_inline_vecs;
}
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 5a55ce5..bd130b6 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -85,11 +85,6 @@ static inline void *bio_data(struct bio *bio)
return NULL;
}

-static inline int bio_has_allocated_vec(struct bio *bio)
-{
- return bio->bi_io_vec && bio->bi_io_vec != bio->bi_inline_vecs;
-}
-
/*
* will die
*/
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index cdf1119..6547103 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -117,6 +117,7 @@ struct bio {
* BIO_POOL_IDX()
*/
#define BIO_RESET_BITS 12
+#define BIO_OWNS_VEC 12 /* bio_free() should free bvec */

#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))

--
1.7.12

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Old 10-15-2012, 08:08 PM
Kent Overstreet
 
Default block: Add an explicit bio flag for bios that own their bvec
This is for the new bio splitting code. When we split a bio, if the
split occured on a bvec boundry we reuse the bvec for the new bio. But
that means bio_free() can't free it, hence the explicit flag.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
Acked-by: Tejun Heo <tj@kernel.org>
---
fs/bio.c | 4 +++-
include/linux/bio.h | 5 -----
include/linux/blk_types.h | 1 +
3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/fs/bio.c b/fs/bio.c
index b3dceff..5dc8441 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -250,7 +250,7 @@ static void bio_free(struct bio *bio)
__bio_free(bio);

if (bs) {
- if (bio_has_allocated_vec(bio))
+ if (bio_flagged(bio, BIO_OWNS_VEC))
bvec_free(bs->bvec_pool, bio->bi_io_vec, BIO_POOL_IDX(bio));

/*
@@ -449,6 +449,8 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)

if (unlikely(!bvl))
goto err_free;
+
+ bio->bi_flags |= 1 << BIO_OWNS_VEC;
} else if (nr_iovecs) {
bvl = bio->bi_inline_vecs;
}
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 8c02317..79f16a6 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -85,11 +85,6 @@ static inline void *bio_data(struct bio *bio)
return NULL;
}

-static inline int bio_has_allocated_vec(struct bio *bio)
-{
- return bio->bi_io_vec && bio->bi_io_vec != bio->bi_inline_vecs;
-}
-
/*
* will die
*/
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index c178d25..538289f 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -117,6 +117,7 @@ struct bio {
* BIO_POOL_IDX()
*/
#define BIO_RESET_BITS 12
+#define BIO_OWNS_VEC 12 /* bio_free() should free bvec */

#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))

--
1.7.12

--
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Old 10-15-2012, 08:09 PM
Kent Overstreet
 
Default block: Add an explicit bio flag for bios that own their bvec
This is for the new bio splitting code. When we split a bio, if the
split occured on a bvec boundry we reuse the bvec for the new bio. But
that means bio_free() can't free it, hence the explicit flag.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
Acked-by: Tejun Heo <tj@kernel.org>
---
fs/bio.c | 4 +++-
include/linux/bio.h | 5 -----
include/linux/blk_types.h | 1 +
3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/fs/bio.c b/fs/bio.c
index 65e6eac..5e91e36 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -250,7 +250,7 @@ static void bio_free(struct bio *bio)
__bio_free(bio);

if (bs) {
- if (bio_has_allocated_vec(bio))
+ if (bio_flagged(bio, BIO_OWNS_VEC))
bvec_free_bs(bs, bio->bi_io_vec, BIO_POOL_IDX(bio));

/*
@@ -449,6 +449,8 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)

if (unlikely(!bvl))
goto err_free;
+
+ bio->bi_flags |= 1 << BIO_OWNS_VEC;
} else if (nr_iovecs) {
bvl = bio->bi_inline_vecs;
}
diff --git a/include/linux/bio.h b/include/linux/bio.h
index bd45154..edd66f3 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -85,11 +85,6 @@ static inline void *bio_data(struct bio *bio)
return NULL;
}

-static inline int bio_has_allocated_vec(struct bio *bio)
-{
- return bio->bi_io_vec && bio->bi_io_vec != bio->bi_inline_vecs;
-}
-
/*
* will die
*/
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 3eefbb2..e9375cf 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -117,6 +117,7 @@ struct bio {
* BIO_POOL_IDX()
*/
#define BIO_RESET_BITS 12
+#define BIO_OWNS_VEC 12 /* bio_free() should free bvec */

#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))

--
1.7.12

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