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-rw-r--r--fs/bio-integrity.c29
1 files changed, 28 insertions, 1 deletions
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index c3e174b35fe6..19caf7c962ac 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]);
@@ -150,6 +151,24 @@ int bio_integrity_add_page(struct bio *bio, struct page *page,
}
EXPORT_SYMBOL(bio_integrity_add_page);
+static int bdev_integrity_enabled(struct block_device *bdev, int rw)
+{
+ struct blk_integrity *bi = bdev_get_integrity(bdev);
+
+ if (bi == NULL)
+ return 0;
+
+ if (rw == READ && bi->verify_fn != NULL &&
+ (bi->flags & INTEGRITY_FLAG_READ))
+ return 1;
+
+ if (rw == WRITE && bi->generate_fn != NULL &&
+ (bi->flags & INTEGRITY_FLAG_WRITE))
+ return 1;
+
+ return 0;
+}
+
/**
* bio_integrity_enabled - Check whether integrity can be passed
* @bio: bio to check
@@ -313,6 +332,14 @@ static void bio_integrity_generate(struct bio *bio)
}
}
+static inline unsigned short blk_integrity_tuple_size(struct blk_integrity *bi)
+{
+ if (bi)
+ return bi->tuple_size;
+
+ return 0;
+}
+
/**
* bio_integrity_prep - Prepare bio for integrity I/O
* @bio: bio to prepare