[PATCH] Free the temporary vfsmount created in bdev_cache_init()

[Catalin Marinas <catalin.marinas@arm.com>]

The vfsmount structure allocated in this function (the bd_mnt local
variable) is only used to obtain the blockdev_superblock and there are
no other references to it. This structure can be safely freed (and
prevent kmemleak from reporting it).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Cheng Renquan <crquan@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
---

This patch was submitted and acked some time ago but I don't think it
made it into the kernel. Here it is again. Thanks.

 fs/block_dev.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 8c3c689..e7a332f 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -492,6 +492,7 @@ void __init bdev_cache_init(void)
 	if (IS_ERR(bd_mnt))
 		panic("Cannot create bdev pseudo-fs");
 	blockdev_superblock = bd_mnt->mnt_sb;	/* For writeback */
+	free_vfsmnt(bd_mnt);
 }
 
 /*