hfsplus: add missing call to bio_put()

hfsplus leaks bio objects by failing to call bio_put() on the bios
it allocates. Add the missing call to fix the leak.

Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Cc: <stable@kernel.org> # .38.x, .39.x
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index 3031d81f5f0f585b17ecc3928da80b19b8a9eee3..4ac88ff79aa6671ef37b66fdbb96d7e6ff5609f7 100644 (file)
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -36,6 +36,7 @@ int hfsplus_submit_bio(struct block_device *bdev, sector_t sector,
 {
        DECLARE_COMPLETION_ONSTACK(wait);
        struct bio *bio;
+       int ret = 0;
 
        bio = bio_alloc(GFP_NOIO, 1);
        bio->bi_sector = sector;
@@ -54,8 +55,10 @@ int hfsplus_submit_bio(struct block_device *bdev, sector_t sector,
        wait_for_completion(&wait);
 
        if (!bio_flagged(bio, BIO_UPTODATE))
-               return -EIO;
-       return 0;
+               ret = -EIO;
+
+       bio_put(bio);
+       return ret;
 }
 
 static int hfsplus_read_mdb(void *bufptr, struct hfsplus_wd *wd)