__bio_clone_fast(b, bio);
- bio_crypt_clone(b, bio, gfp_mask);
+ if (bio_crypt_clone(b, bio, gfp_mask) < 0)
+ goto err_put;
- if (bio_integrity(bio)) {
- int ret;
-
- ret = bio_integrity_clone(b, bio, gfp_mask);
-
- if (ret < 0) {
- bio_put(b);
- return NULL;
- }
- }
+ if (bio_integrity(bio) &&
+ bio_integrity_clone(b, bio, gfp_mask) < 0)
+ goto err_put;
return b;
+
+err_put:
+ bio_put(b);
+ return NULL;
}
EXPORT_SYMBOL(bio_clone_fast);
bio->bi_crypt_context = NULL;
}
-void __bio_crypt_clone(struct bio *dst, struct bio *src, gfp_t gfp_mask)
+int __bio_crypt_clone(struct bio *dst, struct bio *src, gfp_t gfp_mask)
{
dst->bi_crypt_context = mempool_alloc(bio_crypt_ctx_pool, gfp_mask);
+ if (!dst->bi_crypt_context)
+ return -ENOMEM;
*dst->bi_crypt_context = *src->bi_crypt_context;
+ return 0;
}
EXPORT_SYMBOL_GPL(__bio_crypt_clone);
break;
}
- bio_crypt_clone(bio, bio_src, gfp_mask);
+ if (bio_crypt_clone(bio, bio_src, gfp_mask) < 0)
+ goto err_put;
- if (bio_integrity(bio_src)) {
- int ret;
-
- ret = bio_integrity_clone(bio, bio_src, gfp_mask);
- if (ret < 0) {
- bio_put(bio);
- return NULL;
- }
- }
+ if (bio_integrity(bio_src) &&
+ bio_integrity_clone(bio, bio_src, gfp_mask) < 0)
+ goto err_put;
bio_clone_blkg_association(bio, bio_src);
blkcg_bio_issue_init(bio);
return bio;
+
+err_put:
+ bio_put(bio);
+ return NULL;
}
static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig,
sector_t sector, unsigned len)
{
struct bio *clone = &tio->clone;
+ int r;
__bio_clone_fast(clone, bio);
- bio_crypt_clone(clone, bio, GFP_NOIO);
+ r = bio_crypt_clone(clone, bio, GFP_NOIO);
+ if (r < 0)
+ return r;
if (bio_integrity(bio)) {
- int r;
-
if (unlikely(!dm_target_has_integrity(tio->ti->type) &&
!dm_target_passes_integrity(tio->ti->type))) {
DMWARN("%s: the target %s doesn't support integrity data.",
#endif /* CONFIG_BLK_INLINE_ENCRYPTION */
-void __bio_crypt_clone(struct bio *dst, struct bio *src, gfp_t gfp_mask);
-static inline void bio_crypt_clone(struct bio *dst, struct bio *src,
- gfp_t gfp_mask)
+int __bio_crypt_clone(struct bio *dst, struct bio *src, gfp_t gfp_mask);
+/**
+ * bio_crypt_clone - clone bio encryption context
+ * @dst: destination bio
+ * @src: source bio
+ * @gfp_mask: memory allocation flags
+ *
+ * If @src has an encryption context, clone it to @dst.
+ *
+ * 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 bio_crypt_clone(struct bio *dst, struct bio *src,
+ gfp_t gfp_mask)
{
if (bio_has_crypt_ctx(src))
- __bio_crypt_clone(dst, src, gfp_mask);
+ return __bio_crypt_clone(dst, src, gfp_mask);
+ return 0;
}
#endif /* __LINUX_BLK_CRYPTO_H */