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btrfs: Use wrapper macro for rcu string to remove duplicate code

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Cleanup patch and no functional changes.

Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Misono Tomohiro
2018-08-02 16:19:07 +09:00
committed by David Sterba
parent f5b3a4173f
commit 672d599041
4 changed files with 12 additions and 31 deletions
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8
fs/btrfs/scrub.c
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@@ -3779,7 +3779,6 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start,
struct scrub_ctx *sctx;
int ret;
struct btrfs_device *dev;
struct rcu_string *name;
if (btrfs_fs_closing(fs_info))
return -EINVAL;
@@ -3833,11 +3832,8 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start,
if (!is_dev_replace && !readonly &&
!test_bit(BTRFS_DEV_STATE_WRITEABLE, &dev->dev_state)) {
mutex_unlock(&fs_info->fs_devices->device_list_mutex);
rcu_read_lock();
name = rcu_dereference(dev->name);
btrfs_err(fs_info, "scrub: device %s is not writable",
name->str);
rcu_read_unlock();
btrfs_err_in_rcu(fs_info, "scrub: device %s is not writable",
rcu_str_deref(dev->name));
return -EROFS;
}