From: Matthew Wilcox <mawil...@microsoft.com> The reada_lock in struct btrfs_device was only initialised, and not actually used. That's good because there's another lock also called reada_lock in the btrfs_fs_info that was quite heavily used. Remove this one.
Signed-off-by: Matthew Wilcox <mawil...@microsoft.com> --- fs/btrfs/volumes.c | 1 - fs/btrfs/volumes.h | 1 - 2 files changed, 2 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index a25684287501..cba286183ff9 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -244,7 +244,6 @@ static struct btrfs_device *__alloc_device(void) spin_lock_init(&dev->io_lock); - spin_lock_init(&dev->reada_lock); atomic_set(&dev->reada_in_flight, 0); atomic_set(&dev->dev_stats_ccnt, 0); btrfs_device_data_ordered_init(dev); diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index ff15208344a7..335fd1590458 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -136,7 +136,6 @@ struct btrfs_device { struct work_struct rcu_work; /* readahead state */ - spinlock_t reada_lock; atomic_t reada_in_flight; u64 reada_next; struct reada_zone *reada_curr_zone; -- 2.15.1