diff mbox series

[v7,06/13] btrfs: lookup physical address from stripe extent

Message ID c53918a56f5be3a3487df91f5e914eead3bb7ea5.1677750131.git.johannes.thumshirn@wdc.com (mailing list archive)
State New, archived
Headers show
Series btrfs: introduce RAID stripe tree | expand

Commit Message

Johannes Thumshirn March 2, 2023, 9:45 a.m. UTC 
Lookup the physical address from the raid stripe tree when a read on an
RAID volume formatted with the raid stripe tree was attempted.

If the requested logical address was not found in the stripe tree, it may
still be in the in-memory ordered stripe tree, so fallback to searching
the ordered stripe tree in this case.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
 fs/btrfs/volumes.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index b4b615421643..80baabdef153 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -6533,23 +6533,29 @@  int __btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
 		bioc->full_stripe_logical = em->start +
 			((stripe_nr * data_stripes) << BTRFS_STRIPE_LEN_SHIFT);
 		for (i = 0; i < num_stripes; i++)
-			set_io_stripe(fs_info, op, logical, length,
-				      &bioc->stripes[i], map,
-				      (i + stripe_nr) % num_stripes,
-				      stripe_offset, stripe_nr);
+			ret = set_io_stripe(fs_info, op, logical, length,
+					    &bioc->stripes[i], map,
+					    (i + stripe_nr) % num_stripes,
+					    stripe_offset, stripe_nr);
 	} else {
 		/*
 		 * For all other non-RAID56 profiles, just copy the target
 		 * stripe into the bioc.
 		 */
 		for (i = 0; i < num_stripes; i++) {
-			set_io_stripe(fs_info, op, logical, length,
-				      &bioc->stripes[i], map, stripe_index,
-				      stripe_offset, stripe_nr);
+			ret = set_io_stripe(fs_info, op, logical, length,
+					    &bioc->stripes[i], map, stripe_index,
+					    stripe_offset, stripe_nr);
 			stripe_index++;
 		}
 	}
 
+	if (ret) {
+		*bioc_ret = NULL;
+		btrfs_put_bioc(bioc);
+		goto out;
+	}
+
 	if (need_full_stripe(op))
 		max_errors = btrfs_chunk_max_errors(map);