Btrfs: remove confusing tracepoint in btrfs_add_reserved_bytes

Here we're not releasing any space, but transferring bytes from
->bytes_may_use to ->bytes_reserved. The last change to the code in
commit 18513091af9483ba8 ("btrfs: update btrfs_space_info's
bytes_may_use timely") removed a conditional tracepoint and the logic
changed too but the tracepiont remained.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ update changelog ]
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 30c5bb3..9292e7c 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -6397,10 +6397,6 @@ static int btrfs_add_reserved_bytes(struct btrfs_block_group_cache *cache,
        } else {
                cache->reserved += num_bytes;
                space_info->bytes_reserved += num_bytes;
-
-               trace_btrfs_space_reservation(cache->fs_info,
-                               "space_info", space_info->flags,
-                               ram_bytes, 0);
                space_info->bytes_may_use -= ram_bytes;
                if (delalloc)
                        cache->delalloc_bytes += num_bytes;