btrfs: remove set but not used variable 'offset'

Fixes gcc '-Wunused-but-set-variable' warning:

fs/btrfs/volumes.c: In function __btrfs_map_block:
fs/btrfs/volumes.c:6023:6: warning:
 variable offset set but not used [-Wunused-but-set-variable]

It is not used any more since commit 343abd1c0ca9 ("btrfs: Use
btrfs_get_io_geometry appropriately")

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index a447d3ec48d506b848e1ab228fc0ce55fb0f87c7..662a9d14f15175dd7c944b011ee4f135d9623ef0 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -6011,7 +6011,6 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info,
 {
        struct extent_map *em;
        struct map_lookup *map;
-       u64 offset;
        u64 stripe_offset;
        u64 stripe_nr;
        u64 stripe_len;
@@ -6046,7 +6045,6 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info,
        map = em->map_lookup;
 
        *length = geom.len;
-       offset = geom.offset;
        stripe_len = geom.stripe_len;
        stripe_nr = geom.stripe_nr;
        stripe_offset = geom.stripe_offset;