btrfs: remove unused member list from async_submit_bio

The list used to track checksums in the early version (2.6.29), but I
was able not pinpoint the commit that stopped using it. Everything
apparently works without it for a long time.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index d8ad30f..f896fa1 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -121,7 +121,6 @@ struct async_submit_bio {
        void *private_data;
        struct btrfs_fs_info *fs_info;
        struct bio *bio;
-       struct list_head list;
        extent_submit_bio_hook_t *submit_bio_start;
        extent_submit_bio_hook_t *submit_bio_done;
        int mirror_num;