Btrfs: Use blk_congestion_wait on older kernels (04005cc7) · Commits · e / devices / android_kernel_fairphone_FP3

fs/btrfs/disk-io.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -919,8 +919,13 @@ void btrfs_throttle(struct btrfs_root *root)
		struct backing_dev_info *bdi;

		bdi = root->fs_info->sb->s_bdev->bd_inode->i_mapping->backing_dev_info;
		if (root->fs_info->throttles && bdi_write_congested(bdi))
		if (root->fs_info->throttles && bdi_write_congested(bdi)) {
		#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)
		congestion_wait(WRITE, HZ/20);
		#else
		blk_congestion_wait(WRITE, HZ/20);
		#endif
		}
		}

		void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)