btrfs_show_devname() is trying to know dev name with
lowest devid for a given FSID, so looping across the
FSID isn't necessary
Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
fs/btrfs/super.c | 18 +++++++-----------
1 files changed, 7 insertions(+), 11 deletions(-)
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 378157c..6ed76d8 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1885,22 +1885,18 @@ static int btrfs_unfreeze(struct super_block *sb)
static int btrfs_show_devname(struct seq_file *m, struct dentry *root)
{
struct btrfs_fs_info *fs_info = btrfs_sb(root->d_sb);
- struct btrfs_fs_devices *cur_devices;
struct btrfs_device *dev, *first_dev = NULL;
struct list_head *head;
struct rcu_string *name;
mutex_lock(&fs_info->fs_devices->device_list_mutex);
- cur_devices = fs_info->fs_devices;
- while (cur_devices) {
- head = &cur_devices->devices;
- list_for_each_entry(dev, head, dev_list) {
- if (dev->missing)
- continue;
- if (!first_dev || dev->devid < first_dev->devid)
- first_dev = dev;
- }
- cur_devices = cur_devices->seed;
+
+ head = &fs_info->fs_devices->devices;
+ list_for_each_entry(dev, head, dev_list) {
+ if (dev->missing)
+ continue;
+ if (!first_dev || dev->devid < first_dev->devid)
+ first_dev = dev;
}
if (first_dev) {
--
1.7.1
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