btrfs: Drop unused function btrfs_abort_devices()

1) This function is not used anywhere.

2) Using the blk_abort_queue() to abort the queue seems not correct.
blk_abort_queue() is used for timeout handling (block/blk-timeout.c).

Cc: Chris Mason <chris.mason@oracle.com>
Cc: linux-btrfs@vger.kernel.org
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Asias He <asias@redhat.com>

2 files changed, 0 insertions, 14 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 297e5a8ed93..0f788c05906 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2903,19 +2903,6 @@ int write_ctree_super(struct btrfs_trans_handle *trans,
         return ret;
 }
 
-/* Kill all outstanding I/O */
-void btrfs_abort_devices(struct btrfs_root *root)
-{
-        struct list_head *head;
-        struct btrfs_device *dev;
-        mutex_lock(&root->fs_info->fs_devices->device_list_mutex);
-        head = &root->fs_info->fs_devices->devices;
-        list_for_each_entry_rcu(dev, head, dev_list) {
-                blk_abort_queue(dev->bdev->bd_disk->queue);
-        }
-        mutex_unlock(&root->fs_info->fs_devices->device_list_mutex);
-}
-
 void btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
 {
         spin_lock(&fs_info->fs_roots_radix_lock);
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index ab1830aaf0e..05b3fab39f7 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -89,7 +89,6 @@ int btrfs_add_log_tree(struct btrfs_trans_handle *trans,
 int btrfs_cleanup_transaction(struct btrfs_root *root);
 void btrfs_cleanup_one_transaction(struct btrfs_transaction *trans,
                                   struct btrfs_root *root);
-void btrfs_abort_devices(struct btrfs_root *root);
 
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 void btrfs_init_lockdep(void);