add_missing_dev() can return device pointer so that IS_ERR/
PTR_ERR can be used to check for the actual error occurred
in the function.
Signed-off-by: Anand Jain <anand.jain@xxxxxxxxxx>
Reviewed-by: Liu Bo <bo.li.liu@xxxxxxxxxx>
---
fs/btrfs/volumes.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 0e8f16c305df..1fb98c2ab9c0 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -6249,7 +6249,7 @@ static struct btrfs_device *add_missing_dev(struct btrfs_fs_devices *fs_devices,
device = btrfs_alloc_device(NULL, &devid, dev_uuid);
if (IS_ERR(device))
- return NULL;
+ return device;
list_add(&device->dev_list, &fs_devices->devices);
device->fs_devices = fs_devices;
@@ -6454,9 +6454,12 @@ static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key,
map->stripes[i].dev =
add_missing_dev(fs_info->fs_devices, devid,
uuid);
- if (!map->stripes[i].dev) {
+ if (IS_ERR(map->stripes[i].dev)) {
free_extent_map(em);
- return -EIO;
+ btrfs_err(fs_info,
+ "failed to init missing dev %llu %ld",
+ devid, PTR_ERR(map->stripes[i].dev));
+ return PTR_ERR(map->stripes[i].dev);
}
btrfs_report_missing_device(fs_info, devid, uuid);
}
@@ -6582,8 +6585,12 @@ static int read_one_dev(struct btrfs_fs_info *fs_info,
}
device = add_missing_dev(fs_devices, devid, dev_uuid);
- if (!device)
- return -ENOMEM;
+ if (IS_ERR(device)) {
+ btrfs_err(fs_info,
+ "failed to add missing dev %llu %ld",
+ devid, PTR_ERR(device));
+ return PTR_ERR(device);
+ }
btrfs_report_missing_device(fs_info, devid, dev_uuid);
} else {
if (!device->bdev) {
--
2.13.1
--
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