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-rw-r--r--block/blk-crypto-internal.h21
1 files changed, 16 insertions, 5 deletions
diff --git a/block/blk-crypto-internal.h b/block/blk-crypto-internal.h
index d2b0f565d83c..0d36aae538d7 100644
--- a/block/blk-crypto-internal.h
+++ b/block/blk-crypto-internal.h
@@ -142,13 +142,24 @@ static inline void blk_crypto_free_request(struct request *rq)
__blk_crypto_free_request(rq);
}
-void __blk_crypto_rq_bio_prep(struct request *rq, struct bio *bio,
- gfp_t gfp_mask);
-static inline void blk_crypto_rq_bio_prep(struct request *rq, struct bio *bio,
- gfp_t gfp_mask)
+int __blk_crypto_rq_bio_prep(struct request *rq, struct bio *bio,
+ gfp_t gfp_mask);
+/**
+ * blk_crypto_rq_bio_prep - Prepare a request's crypt_ctx when its first bio
+ * is inserted
+ * @rq: The request to prepare
+ * @bio: The first bio being inserted into the request
+ * @gfp_mask: Memory allocation flags
+ *
+ * Return: 0 on success, -ENOMEM if out of memory. -ENOMEM is only possible if
+ * @gfp_mask doesn't include %__GFP_DIRECT_RECLAIM.
+ */
+static inline int blk_crypto_rq_bio_prep(struct request *rq, struct bio *bio,
+ gfp_t gfp_mask)
{
if (bio_has_crypt_ctx(bio))
- __blk_crypto_rq_bio_prep(rq, bio, gfp_mask);
+ return __blk_crypto_rq_bio_prep(rq, bio, gfp_mask);
+ return 0;
}
/**