brd: remove unused brd_mutex

Remove unused mutex brd_mutex. It is unused since the commit ff26956875c2
("brd: remove support for BLKFLSBUF").

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 2d7178f7754edddf06278e46e87cc9aefc6d4427..c1cf87718c2e043a454d984a21cb8a5931761d87 100644 (file)
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -60,7 +60,6 @@ struct brd_device {
 /*
  * Look up and return a brd's page for a given sector.
  */
-static DEFINE_MUTEX(brd_mutex);
 static struct page *brd_lookup_page(struct brd_device *brd, sector_t sector)
 {
        pgoff_t idx;