btrfs: fix use of error or warning for missing device

When device is missing without the -o degraded option then its an error
so report it as an error instead of a warning.  And when -o degraded
option is provided, log the missing device as warning.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ switch error to bool ]
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/volumes.c

@@ -6367,9 +6367,14 @@ static int btrfs_check_chunk_valid(struct btrfs_fs_info *fs_info,
 }
 
 static void btrfs_report_missing_device(struct btrfs_fs_info *fs_info,
-						u64 devid, u8 *uuid)
+					u64 devid, u8 *uuid, bool error)
 {
-	btrfs_warn_rl(fs_info, "devid %llu uuid %pU is missing", devid, uuid);
+	if (error)
+		btrfs_err_rl(fs_info, "devid %llu uuid %pU is missing",
+			      devid, uuid);
+	else
+		btrfs_warn_rl(fs_info, "devid %llu uuid %pU is missing",
+			      devid, uuid);
 }
 
 static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key,
@@ -6442,7 +6447,7 @@ static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key,
 		if (!map->stripes[i].dev &&
 		    !btrfs_test_opt(fs_info, DEGRADED)) {
 			free_extent_map(em);
-			btrfs_report_missing_device(fs_info, devid, uuid);
+			btrfs_report_missing_device(fs_info, devid, uuid, true);
 			return -ENOENT;
 		}
 		if (!map->stripes[i].dev) {
@@ -6456,7 +6461,7 @@ static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key,
 					devid, PTR_ERR(map->stripes[i].dev));
 				return PTR_ERR(map->stripes[i].dev);
 			}
-			btrfs_report_missing_device(fs_info, devid, uuid);
+			btrfs_report_missing_device(fs_info, devid, uuid, false);
 		}
 		map->stripes[i].dev->in_fs_metadata = 1;
 	}
@@ -6575,7 +6580,8 @@ static int read_one_dev(struct btrfs_fs_info *fs_info,
 	device = btrfs_find_device(fs_info, devid, dev_uuid, fs_uuid);
 	if (!device) {
 		if (!btrfs_test_opt(fs_info, DEGRADED)) {
-			btrfs_report_missing_device(fs_info, devid, dev_uuid);
+			btrfs_report_missing_device(fs_info, devid,
+							dev_uuid, true);
 			return -ENOENT;
 		}
 
@@ -6586,13 +6592,17 @@ static int read_one_dev(struct btrfs_fs_info *fs_info,
 				devid, PTR_ERR(device));
 			return PTR_ERR(device);
 		}
-		btrfs_report_missing_device(fs_info, devid, dev_uuid);
+		btrfs_report_missing_device(fs_info, devid, dev_uuid, false);
 	} else {
 		if (!device->bdev) {
-			btrfs_report_missing_device(fs_info, devid, dev_uuid);
-			if (!btrfs_test_opt(fs_info, DEGRADED))
+			if (!btrfs_test_opt(fs_info, DEGRADED)) {
+				btrfs_report_missing_device(fs_info,
+						devid, dev_uuid, true);
 				return -ENOENT;
 			}
+			btrfs_report_missing_device(fs_info, devid,
+							dev_uuid, false);
+		}
 
 		if(!device->bdev && !device->missing) {
 			/*