A filesystem might supply its own integrity metadata. Introduce a
flag that indicates whether the filesystem or the block layer owns the
integrity buffer.
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
---
fs/bio-integrity.c | 3 ++-
include/linux/bio.h | 1 +
2 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index c3e174b..8e409ff 100644
--- a/fs/bio-integrity.c
+++ b/fs/bio-integrity.c
@@ -107,7 +107,8 @@ void bio_integrity_free(struct bio *bio, struct bio_set *bs)
BUG_ON(bip == NULL);
/* A cloned bio doesn't own the integrity metadata */
- if (!bio_flagged(bio, BIO_CLONED) && bip->bip_buf != NULL)
+ if (!bio_flagged(bio, BIO_CLONED) && !bio_flagged(bio, BIO_FS_INTEGRITY)
+ && bip->bip_buf != NULL)
kfree(bip->bip_buf);
mempool_free(bip->bip_vec, bs->bvec_pools[bip->bip_pool]);
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 6520ee1..6aba97d 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -109,6 +109,7 @@ struct bio {
#define BIO_EOPNOTSUPP 7 /* not supported */
#define BIO_CPU_AFFINE 8 /* complete bio on same CPU as submitted */
#define BIO_NULL_MAPPED 9 /* contains invalid user pages */
+#define BIO_FS_INTEGRITY 10 /* fs owns integrity data, not block layer */
#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))
/*
--
1.6.0.2
--
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