manuals: replace "rootfs" by "root filesystem"

Almost everyone understands "rootfs", but "root filesystem"
is real English.

(From yocto-docs rev: 3d610f15e5b6be3435e9e81e4498a676671e5b39)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

3 files changed, 3 insertions, 3 deletions

diff --git a/documentation/migration-guides/migration-2.2.rst b/documentation/migration-guides/migration-2.2.rst
index c063deb44b..a6c1a4aa48 100644
--- a/documentation/migration-guides/migration-2.2.rst
+++ b/documentation/migration-guides/migration-2.2.rst
@@ -154,7 +154,7 @@ enables fine-grained tuning of options passed to QEMU without the
 Using a configuration file is particularly convenient when trying to use
 QEMU with machines other than the ``qemu*`` machines in
 :term:`OpenEmbedded-Core (OE-Core)`. The ``qemuboot.conf`` file is generated by the
-``qemuboot`` class when the root filesystem is being build (i.e. build
+``qemuboot`` class when the root filesystem is being built (i.e. build
 rootfs). QEMU boot arguments can be set in BSP's configuration file and
 the ``qemuboot`` class will save them to ``qemuboot.conf``.
 
diff --git a/documentation/migration-guides/migration-2.5.rst b/documentation/migration-guides/migration-2.5.rst
index bd75522773..abd26809df 100644
--- a/documentation/migration-guides/migration-2.5.rst
+++ b/documentation/migration-guides/migration-2.5.rst
@@ -287,7 +287,7 @@ The following are additional changes:
 
 -  For EFI-based machines, the bootloader (``grub-efi`` by default) is
    installed into the image at /boot. Wic can be used to split the
-   bootloader into separate boot and rootfs partitions if necessary.
+   bootloader into separate boot and root filesystem partitions if necessary.
 
 -  Patches whose context does not match exactly (i.e. where patch
    reports "fuzz" when applying) will generate a warning. For an example
diff --git a/documentation/migration-guides/migration-2.6.rst b/documentation/migration-guides/migration-2.6.rst
index a8c56ede72..c68414e1ca 100644
--- a/documentation/migration-guides/migration-2.6.rst
+++ b/documentation/migration-guides/migration-2.6.rst
@@ -363,7 +363,7 @@ Post Installation Changes
 
 You must explicitly mark post installs to defer to the target. If you
 want to explicitly defer a postinstall to first boot on the target
-rather than at rootfs creation time, use ``pkg_postinst_ontarget()`` or
+rather than at root filesystem creation time, use ``pkg_postinst_ontarget()`` or
 call ``postinst_intercept delay_to_first_boot`` from ``pkg_postinst()``.
 Any failure of a ``pkg_postinst()`` script (including exit 1) triggers
 an error during the :ref:`ref-tasks-rootfs` task.