btrfs: dump block_rsv details when dumping space info

For enospc_debug having the block rsvs is super helpful to see if we've
done something wrong.

Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.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 b85cd66ac583191c844985b042e76b3b6339adb6..9e74ce2d4cf23cf991058252e1ca3d9e0cbb2871 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8086,6 +8086,15 @@ loop:
        return ret;
 }
 
+#define DUMP_BLOCK_RSV(fs_info, rsv_name)                              \
+do {                                                                   \
+       struct btrfs_block_rsv *__rsv = &(fs_info)->rsv_name;           \
+       spin_lock(&__rsv->lock);                                        \
+       btrfs_info(fs_info, #rsv_name ": size %llu reserved %llu",      \
+                  __rsv->size, __rsv->reserved);                       \
+       spin_unlock(&__rsv->lock);                                      \
+} while (0)
+
 static void dump_space_info(struct btrfs_fs_info *fs_info,
                            struct btrfs_space_info *info, u64 bytes,
                            int dump_block_groups)
@@ -8105,6 +8114,12 @@ static void dump_space_info(struct btrfs_fs_info *fs_info,
                info->bytes_readonly);
        spin_unlock(&info->lock);
 
+       DUMP_BLOCK_RSV(fs_info, global_block_rsv);
+       DUMP_BLOCK_RSV(fs_info, trans_block_rsv);
+       DUMP_BLOCK_RSV(fs_info, chunk_block_rsv);
+       DUMP_BLOCK_RSV(fs_info, delayed_block_rsv);
+       DUMP_BLOCK_RSV(fs_info, delayed_refs_rsv);
+
        if (!dump_block_groups)
                return;