move patch specifc desc to patch directory readmes

README.md

@@ -11,35 +11,23 @@ Patches in this project are ordered by OpenStack releases. For example a specifi
 
 ## Usage
 
-These patches can be applied by navigating to the project to be patched root directory and running:
+These patches can be applied by navigating to the project to be patched root directory and running the linux patch utility, e.g.:
 
     patch -p1 < /path/to/patchfile
 
+Please see the different patches readme files for their respective installation commands.
+
 # Contents
 
 ## systemd-cgroup_patch
 
 Backport of a [Nova bugfix](https://review.openstack.org/#/c/432344/) for a [bug](https://bugs.launchpad.net/nova/+bug/1530860) that caused mounts to be removed when the Nova service was stopped or restarted.
 
-__Important__: Installations that applied the previous [Nova Mitaka external mount patch](https://github.com/quobyte/nova_mitaka_external-mount_patch) for this issue have to remove this previous patch before applying the systemd-cgroup_patch!
-Removal can easily be done via:
-
-    patch -p1 -R < /path/to/patchfile
-
 ## truncate-ephemeral_patch
 
 This patch changes Nova ephemeral image prealloc behaviour by running truncate instead of fallocate. This improves performance with ephemeral images on Quobyte volumes.
 This change is compatible with other backends with a possible performance impact.
 
-### Usage
-
-This patch can be applied by navigating to the Nova project root directory and running:
-
-    patch -p0 < /path/to/patchfile
-
 ## xattr-removal_patch
 
-Backports of performance optimizations that remove the usage of xattr from the Nova driver and mount Quobyte volumes without xattr support, in order to improve iops. This patch comes in two flavors:
-
-* xattr-removal_mitaka-nova_plain-diff.patch: patches xattr out of the vanilla release code
-* xattr-removal_mitaka-nova_upon-systemd-run-patch.patch: patches xattr out of code that has previously been patched with the systemd-cgroup patch from this repository
+Backports of performance optimizations that remove the usage of xattr from the Nova driver and mount Quobyte volumes without xattr support, in order to improve iops. 

systemd-cgroup_patch/README.md

@@ -0,0 +1,16 @@
+
+## systemd-cgroup_patch
+
+Backport of a [Nova bugfix](https://review.openstack.org/#/c/432344/) for a [bug](https://bugs.launchpad.net/nova/+bug/1530860) that caused mounts to be removed when the Nova service was stopped or restarted.
+
+__Important__: Installations that applied the previous [Nova Mitaka external mount patch](https://github.com/quobyte/nova_mitaka_external-mount_patch) for this issue have to remove this previous patch before applying the systemd-cgroup_patch!
+Removal can easily be done via:
+
+    patch -p1 -R < /path/to/patchfile
+
+### Usage
+
+These patches can be applied by navigating to the project to be patched root directory and running:
+
+    patch -p1 < /path/to/patchfile
+

truncate_ephemeral_patch/README.md

@@ -0,0 +1,11 @@
+
+## truncate-ephemeral_patch
+
+This patch changes Nova ephemeral image prealloc behaviour by running truncate instead of fallocate. This improves performance with ephemeral images on Quobyte volumes.
+This change may have a possible performance impact on other backends.
+
+### Usage
+
+This patch can be applied by navigating to the Nova project root directory and running:
+
+    patch -p0 < /path/to/patchfile

xattr-removal_patch/README.md

@@ -0,0 +1,13 @@
+
+## xattr-removal_patch
+
+Backports of performance optimizations that remove the usage of xattr from the Nova driver and mount Quobyte volumes without xattr support, in order to improve iops. This patch comes in two flavors:
+
+* xattr-removal_mitaka-nova_plain-diff.patch: patches xattr out of the vanilla release code
+* xattr-removal_mitaka-nova_upon-systemd-run-patch.patch: patches xattr out of code that has previously been patched with the systemd-cgroup patch from this repository
+
+### Usage
+
+These patches can be applied by navigating to the project to be patched root directory and running:
+
+    patch -p1 < /path/to/patchfile