From a3839bc6351d79cf85790f302238dfc84382429f Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 10 Apr 2019 11:12:31 +0300 Subject: [PATCH] dm zoned: Silence a static checker warning My static checker complains about this line from dmz_get_zoned_device() aligned_capacity = dev->capacity & ~(blk_queue_zone_sectors(q) - 1); The problem is that "aligned_capacity" and "dev->capacity" are sector_t type (which is a u64 under most configs) but blk_queue_zone_sectors(q) returns a u32 so the higher 32 bits in aligned_capacity are cleared to zero. This patch adds a cast to address the issue. Fixes: 114e025968b5 ("dm zoned: ignore last smaller runt zone") Signed-off-by: Dan Carpenter Reviewed-by: Damien Le Moal Signed-off-by: Mike Snitzer --- drivers/md/dm-zoned-target.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm-zoned-target.c b/drivers/md/dm-zoned-target.c index 8865c17..51d029b 100644 --- a/drivers/md/dm-zoned-target.c +++ b/drivers/md/dm-zoned-target.c @@ -643,7 +643,8 @@ static int dmz_get_zoned_device(struct dm_target *ti, char *path) q = bdev_get_queue(dev->bdev); dev->capacity = i_size_read(dev->bdev->bd_inode) >> SECTOR_SHIFT; - aligned_capacity = dev->capacity & ~(blk_queue_zone_sectors(q) - 1); + aligned_capacity = dev->capacity & + ~((sector_t)blk_queue_zone_sectors(q) - 1); if (ti->begin || ((ti->len != dev->capacity) && (ti->len != aligned_capacity))) { ti->error = "Partial mapping not supported"; -- 2.7.4