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bio-integrity: Add explicit field for owner of bip_buf 

This was the only real user of BIO_CLONED, which didn't have very clear
semantics. Convert to its own flag so we can get rid of BIO_CLONED.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
CC: Jens Axboe <axboe@kernel.dk>
CC: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Kent Overstreet 2012-09-04 09:54:22 -07:00
parent a38352e0ac
commit 29ed7813ce
2 changed files with 3 additions and 3 deletions
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5
fs/bio-integrity.c
View File

@ -97,9 +97,7 @@ void bio_integrity_free(struct bio *bio)
struct bio_integrity_payload *bip = bio->bi_integrity;
struct bio_set *bs = bio->bi_pool;
/* A cloned bio doesn't own the integrity metadata */
if (!bio_flagged(bio, BIO_CLONED) && !bio_flagged(bio, BIO_FS_INTEGRITY)
&& bip->bip_buf != NULL)
if (bip->bip_owns_buf)
kfree(bip->bip_buf);
if (bs) {
@ -386,6 +384,7 @@ int bio_integrity_prep(struct bio *bio)
return -EIO;
}
bip->bip_owns_buf = 1;
bip->bip_buf = buf;
bip->bip_size = len;
bip->bip_sector = bio->bi_sector;

1
include/linux/bio.h
View File

@ -187,6 +187,7 @@ struct bio_integrity_payload {
unsigned short bip_slab; /* slab the bip came from */
unsigned short bip_vcnt; /* # of integrity bio_vecs */
unsigned short bip_idx; /* current bip_vec index */
unsigned bip_owns_buf:1; /* should free bip_buf */
struct work_struct bip_work; /* I/O completion */