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btrfs: mark ordered extent insertion failure checks as unlikely

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We never expect an ordered extent insertion to fail due to already having
another ordered extent in the tree for the same file offset, since we
always wait for existing ordered extents in a range to complete before
writing into the range again. So mark the failure checks for the results
of tree_insert() as unlikely, to make it clear it's never expected (save
exceptional causes like bugs or memory corruptions) and to serve as a hint
for the compiler to possibly generate better code.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana
2024-06-03 17:20:30 +01:00
committed by David Sterba
parent cb3cd62454
commit b7ac1acbdd
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/ordered-data.c
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@@ -224,7 +224,7 @@ static void insert_ordered_extent(struct btrfs_ordered_extent *entry)
spin_lock_irq(&inode->ordered_tree_lock);
node = tree_insert(&inode->ordered_tree, entry->file_offset,
&entry->rb_node);
if (node)
if (unlikely(node))
btrfs_panic(fs_info, -EEXIST,
"inconsistency in ordered tree at offset %llu",
entry->file_offset);
@@ -1303,7 +1303,7 @@ struct btrfs_ordered_extent *btrfs_split_ordered_extent(
}
node = tree_insert(&inode->ordered_tree, new->file_offset, &new->rb_node);
if (node)
if (unlikely(node))
btrfs_panic(fs_info, -EEXIST,
"zoned: inconsistency in ordered tree at offset %llu",
new->file_offset);