btrfs: Allow barrier_all_devices to do chunk level device check

The last user of num_tolerated_disk_barrier_failures is
barrier_all_devices().
But it can be easily changed to the new per-chunk degradable check
framework.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 3 insertions, 13 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 78fc7f5ab773..552098e1b65b 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3519,20 +3519,10 @@ static blk_status_t wait_dev_flush(struct btrfs_device *device)
         return bio->bi_status;
 }
 
-static int check_barrier_error(struct btrfs_fs_devices *fsdevs)
+static int check_barrier_error(struct btrfs_fs_info *fs_info)
 {
-        int dev_flush_error = 0;
-        struct btrfs_device *dev;
-
-        list_for_each_entry_rcu(dev, &fsdevs->devices, dev_list) {
-                if (!dev->bdev || dev->last_flush_error)
-                        dev_flush_error++;
-        }
-
-        if (dev_flush_error >
-            fsdevs->fs_info->num_tolerated_disk_barrier_failures)
+        if (!btrfs_check_rw_degradable(fs_info))
                 return -EIO;
-
         return 0;
 }
 
@@ -3587,7 +3577,7 @@ static int barrier_all_devices(struct btrfs_fs_info *info)
                  * to arrive at the volume status. So error checking
                  * is being pushed to a separate loop.
                  */
-                return check_barrier_error(info->fs_devices);
+                return check_barrier_error(info);
         }
         return 0;
 }