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block: Relocate bio integrity flags

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Move flags affecting the integrity code out of the bio bi_flags and into
the block integrity payload.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Martin K. Petersen 2014-09-26 19:20:04 -04:00 committed by Jens Axboe
parent 3aec2f41a8
commit b1f0138857
4 changed files with 14 additions and 9 deletions
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4
block/bio-integrity.c
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@ -100,7 +100,7 @@ void bio_integrity_free(struct bio *bio)
struct bio_integrity_payload *bip = bio_integrity(bio);
struct bio_set *bs = bio->bi_pool;
if (bip->bip_owns_buf)
if (bip->bip_flags & BIP_BLOCK_INTEGRITY)
kfree(page_address(bip->bip_vec->bv_page) +
bip->bip_vec->bv_offset);
@ -293,7 +293,7 @@ int bio_integrity_prep(struct bio *bio)
return -EIO;
}
bip->bip_owns_buf = 1;
bip->bip_flags |= BIP_BLOCK_INTEGRITY;
bip->bip_iter.bi_size = len;
bip_set_seed(bip, bio->bi_iter.bi_sector);

4
drivers/scsi/sd_dif.c
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@ -326,7 +326,7 @@ void sd_dif_prepare(struct request *rq, sector_t hw_sector,
unsigned int j;
/* Already remapped? */
if (bio_flagged(bio, BIO_MAPPED_INTEGRITY))
if (bip->bip_flags & BIP_MAPPED_INTEGRITY)
break;
virt = bip_get_seed(bip) & 0xffffffff;
@ -347,7 +347,7 @@ void sd_dif_prepare(struct request *rq, sector_t hw_sector,
kunmap_atomic(sdt);
}
bio->bi_flags |= (1 << BIO_MAPPED_INTEGRITY);
bip->bip_flags |= BIP_MAPPED_INTEGRITY;
}
}

9
include/linux/bio.h
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@ -315,7 +315,7 @@ struct bio_integrity_payload {
unsigned short bip_slab; /* slab the bip came from */
unsigned short bip_vcnt; /* # of integrity bio_vecs */
unsigned short bip_max_vcnt; /* integrity bio_vec slots */
unsigned bip_owns_buf:1; /* should free bip_buf */
unsigned short bip_flags; /* control flags */
struct work_struct bip_work; /* I/O completion */
@ -323,6 +323,13 @@ struct bio_integrity_payload {
struct bio_vec bip_inline_vecs[0];/* embedded bvec array */
};
enum bip_flags {
BIP_BLOCK_INTEGRITY = 1 << 0, /* block layer owns integrity data */
BIP_MAPPED_INTEGRITY = 1 << 1, /* ref tag has been remapped */
BIP_CTRL_NOCHECK = 1 << 2, /* disable HBA integrity checking */
BIP_DISK_NOCHECK = 1 << 3, /* disable disk integrity checking */
};
static inline sector_t bip_get_seed(struct bio_integrity_payload *bip)
{
return bip->bip_iter.bi_sector;

6
include/linux/blk_types.h
View File

@ -120,10 +120,8 @@ struct bio {
#define BIO_USER_MAPPED 6 /* contains user pages */
#define BIO_EOPNOTSUPP 7 /* not supported */
#define BIO_NULL_MAPPED 8 /* contains invalid user pages */
#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_SNAP_STABLE 12 /* bio data must be snapshotted during write */
#define BIO_QUIET 9 /* Make BIO Quiet */
#define BIO_SNAP_STABLE 10 /* bio data must be snapshotted during write */
/*
* Flags starting here get preserved by bio_reset() - this includes