btrfs: preallocate radix tree node for global readahead tree (7ef70b4d) · Commits · 戴 / test

fs/btrfs/disk-io.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2693,7 +2693,7 @@ int open_ctree(struct super_block *sb,
		fs_info->commit_interval = BTRFS_DEFAULT_COMMIT_INTERVAL;
		fs_info->avg_delayed_ref_runtime = NSEC_PER_SEC >> 6; /* div by 64 */
		/* readahead state */
		INIT_RADIX_TREE(&fs_info->reada_tree, GFP_NOFS & ~__GFP_DIRECT_RECLAIM);
		INIT_RADIX_TREE(&fs_info->reada_tree, GFP_KERNEL);
		spin_lock_init(&fs_info->reada_lock);

		fs_info->thread_pool_size = min_t(unsigned long,

+7 −0

Original line number	Diff line number	Diff line
		@@ -393,6 +393,10 @@ static struct reada_extent reada_find_extent(struct btrfs_fs_info fs_info,
		goto error;
		}

		ret = radix_tree_preload(GFP_KERNEL);
		if (ret)
		goto error;

		/* insert extent in reada_tree + all per-device trees, all or nothing */
		btrfs_dev_replace_lock(&fs_info->dev_replace, 0);
		spin_lock(&fs_info->reada_lock);
		@@ -402,13 +406,16 @@ static struct reada_extent reada_find_extent(struct btrfs_fs_info fs_info,
		re_exist->refcnt++;
		spin_unlock(&fs_info->reada_lock);
		btrfs_dev_replace_unlock(&fs_info->dev_replace, 0);
		radix_tree_preload_end();
		goto error;
		}
		if (ret) {
		spin_unlock(&fs_info->reada_lock);
		btrfs_dev_replace_unlock(&fs_info->dev_replace, 0);
		radix_tree_preload_end();
		goto error;
		}
		radix_tree_preload_end();
		prev_dev = NULL;
		dev_replace_is_ongoing = btrfs_dev_replace_is_ongoing(
		&fs_info->dev_replace);