btrfs: extent-tree: Remove dead alignment check
In find_free_extent() under checks: label, we have the following code:
search_start = ALIGN(offset, fs_info->stripesize);
/* move on to the next group */
if (search_start + num_bytes >
block_group->key.objectid + block_group->key.offset) {
btrfs_add_free_space(block_group, offset, num_bytes);
goto loop;
}
if (offset < search_start)
btrfs_add_free_space(block_group, offset,
search_start - offset);
BUG_ON(offset > search_start);
However ALIGN() is rounding up, thus @search_start >= @offset and that
BUG_ON() will never be triggered.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index fd109bf..c71aa11 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -7564,7 +7564,7 @@
goto loop;
}
checks:
- search_start = ALIGN(offset, fs_info->stripesize);
+ search_start = round_up(offset, fs_info->stripesize);
/* move on to the next group */
if (search_start + num_bytes >
@@ -7576,7 +7576,6 @@
if (offset < search_start)
btrfs_add_free_space(block_group, offset,
search_start - offset);
- BUG_ON(offset > search_start);
ret = btrfs_add_reserved_bytes(block_group, ram_bytes,
num_bytes, delalloc);