From 3cbf26da5ec85f1d3177eee534e377c707ed89e1 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Wed, 17 Jan 2018 12:21:49 -0800 Subject: [PATCH] btrfs: Remove unused readahead spinlock 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 Reviewed-by: David Sterba Signed-off-by: David Sterba --- 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 11fccf2fcb1f..5750cd9df417 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -319,7 +319,6 @@ 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 15216fed918b..28c28eeadff3 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -137,7 +137,6 @@ struct btrfs_device { struct rcu_head rcu; /* readahead state */ - spinlock_t reada_lock; atomic_t reada_in_flight; u64 reada_next; struct reada_zone *reada_curr_zone; -- 2.30.2