From 9603ac1ccc510b91e6b4295aee86989e20c1d159 Mon Sep 17 00:00:00 2001
From: Philipp Oppermann <dev@phil-opp.com>
Date: Fri, 5 Aug 2016 11:21:57 +0200
Subject: [PATCH] Create a cargo workspace for subcrates (#202)

---
 Cargo.toml                          |  2 ++
 blog/post/2016-04-11-kernel-heap.md | 14 ++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/Cargo.toml b/Cargo.toml
index 35dcf09c..e658a294 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,6 +27,8 @@ features = ["spin_no_std"]
 [lib]
 crate-type = ["staticlib"]
 
+[workspace]
+
 [profile.dev]
 panic = "abort"
 
diff --git a/blog/post/2016-04-11-kernel-heap.md b/blog/post/2016-04-11-kernel-heap.md
index 53157cb8..1229d357 100644
--- a/blog/post/2016-04-11-kernel-heap.md
+++ b/blog/post/2016-04-11-kernel-heap.md
@@ -45,6 +45,20 @@ For our own allocator, we start simple. We create an allocator crate in a new `l
 > cd bump_allocator
 ```
 
+Normally, this subcrate would have its own `Cargo.lock` and its own `target` output folder. To avoid this, we can create a so-called _[workspace]_. For that we only need to add a single line to our `Cargo.toml`:
+
+[workspace]: http://doc.crates.io/manifest.html#the-workspace-section
+
+```toml
+# in Cargo.toml
+
+[workspace]
+```
+We don't need to add any keys to the `workspace` section, since they have [sensible defaults]. Now our `bump_allocator` subcrate shares the `Cargo.toml` and `target` folder of the root project.
+
+[sensible defaults]: https://github.com/rust-lang/rfcs/blob/master/text/1525-cargo-workspace.md#implicit-relations
+
+### Implementation
 Our allocator is very basic. It only keeps track of the next free address:
 
 ``` rust