[PATCH 2/4] btrfs: break loop in case set_io_stripe fails

Johannes Thumshirn
2023-09-18T15:45:27Z

Break out of the loop in case st_io_stripe() fails.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
fs/btrfs/volumes.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 0c5bd8d2ea06..d2a0ae9d91c4 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -6576,11 +6576,15 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
*/
bioc->full_stripe_logical = em->start +
btrfs_stripe_nr_to_offset(stripe_nr * data_stripes);
- for (i = 0; i < num_stripes; i++)
+ for (i = 0; i < num_stripes; i++) {
ret = set_io_stripe(fs_info, op, logical, length,
&bioc->stripes[i], map,
(i + stripe_nr) % num_stripes,
stripe_offset, stripe_nr);
+ if (ret)
+ break;
+ }
+
} else {
/*
* For all other non-RAID56 profiles, just copy the target
@@ -6590,6 +6594,8 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
ret = set_io_stripe(fs_info, op, logical, length,
&bioc->stripes[i], map, stripe_index,
stripe_offset, stripe_nr);
+ if (ret)
+ break;
stripe_index++;
}
}

--
2.41.0