block: cleanup some of the integrity stuff in blkdev.h

[linux-2.6-omap-h63xx.git] / fs / bio-integrity.c

diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index c3e174b35fe6a179baac8ef098b465f0ab51f515..ba4ada08564a8d9ac7caff84c61fe321c7b61e3d 100644 (file)
--- a/fs/bio-integrity.c
+++ b/fs/bio-integrity.c
@@ -150,6 +150,29 @@ int bio_integrity_add_page(struct bio *bio, struct page *page,
 }
 EXPORT_SYMBOL(bio_integrity_add_page);
 
+static struct blk_integrity *bdev_get_integrity(struct block_device *bdev)
+{
+       return bdev->bd_disk->integrity;
+}
+
+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 +336,14 @@ 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