On 13.11.2017 07:44, Anand Jain wrote:
> We need to delete a device from the dev_list, so refactor
> btrfs_free_stale_device() for delete_device_from_list().
>
> Signed-off-by: Anand Jain <anand.j...@oracle.com>
> ---
> fs/btrfs/volumes.c | 27 +++++++++++++++++----------
> 1 file changed, 17 insertions(+), 10 deletions(-)
>
> diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
> index 8bac1cf17048..8ead85dba6f5 100644
> --- a/fs/btrfs/volumes.c
> +++ b/fs/btrfs/volumes.c
> @@ -546,6 +546,22 @@ static void pending_bios_fn(struct btrfs_work *work)
> run_scheduled_bios(device);
> }
>
> +void delete_device_from_list(struct btrfs_device *dev)
In this patch and the other one this function is used only in volume.c
so make static. Also if it relies on some particular lock being held why
not add lockdep_assert_held(xxx) as a means of documenting that ?
> +{
> + struct btrfs_fs_devices *fs_devs;
> + fs_devs = dev->fs_devices;
> +
> + if (fs_devs->num_devices == 1) {
> + btrfs_sysfs_remove_fsid(fs_devs);
> + list_del(&fs_devs->list);
> + free_fs_devices(fs_devs);
> + } else {
> + fs_devs->num_devices--;
> + list_del(&dev->dev_list);
> + rcu_string_free(dev->name);
> + kfree(dev);
> + }
> +}
>
> void btrfs_free_stale_device(struct btrfs_device *cur_dev)
> {
> @@ -586,16 +602,7 @@ void btrfs_free_stale_device(struct btrfs_device
> *cur_dev)
>
> if (!del) {
> /* delete the stale device */
> - if (fs_devs->num_devices == 1) {
> - btrfs_sysfs_remove_fsid(fs_devs);
> - list_del(&fs_devs->list);
> - free_fs_devices(fs_devs);
> - } else {
> - fs_devs->num_devices--;
> - list_del(&dev->dev_list);
> - rcu_string_free(dev->name);
> - kfree(dev);
> - }
> + delete_device_from_list(dev);
> break;
> }
> }
>
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