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.j...@oracle.com> Reviewed-by: Liu Bo <bo.li....@oracle.com> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html