[bootlin/training-materials updates] master: slides/sysdev-block-filesystems: reduce the focus on genext2fs (6db63f59)

[Michael Opdenacker]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/6db63f5934ca53475f1eb8a250c94936ac6b9b2e

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commit 6db63f5934ca53475f1eb8a250c94936ac6b9b2e
Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
Date:   Thu Sep 29 13:16:04 2022 +0200

    slides/sysdev-block-filesystems: reduce the focus on genext2fs
    
    Applying only to ext2
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>


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6db63f5934ca53475f1eb8a250c94936ac6b9b2e
 .../sysdev-block-filesystems.tex                      | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/slides/sysdev-block-filesystems/sysdev-block-filesystems.tex b/slides/sysdev-block-filesystems/sysdev-block-filesystems.tex
index 4715f3ae..01dbb4f6 100644
--- a/slides/sysdev-block-filesystems/sysdev-block-filesystems.tex
+++ b/slides/sysdev-block-filesystems/sysdev-block-filesystems.tex
@@ -295,13 +295,15 @@ major minor #blocks name
   \item To create a filesystem image from a directory containing all
     your files and directories
     \begin{itemize}
-    \item Use the \code{genext2fs} tool, from the package of the same name
-    \item This tool only supports ext2. Alternative for other
-          filesystems: create a disk image, format it, mount it (see
-          next slides), copy contents and umount.
-    \item \code{genext2fs -d rootfs/ rootfs.img}
-    \item Your image is then ready to be transferred to your block
-      device
+    \item For some filesystems, there are utilities to create a
+          filesystem image from an existing directory:
+          \begin{itemize}
+          \item {\em ext2}: \code{genext2fs -d rootfs/ rootfs.img}
+	  \item {\em squashfs}: \code{mksquashfs rootfs/ rootfs.sqfs} (details later)
+          \end{itemize}
+    \item For other (read-write) filesystems: create a disk image,
+          format it, mount it (see next slides), copy contents and umount.
+    \item Your image is then ready to be transferred to your block device
     \end{itemize}
   \end{itemize}
 \end{frame}
@@ -311,9 +313,8 @@ major minor #blocks name
   \begin{itemize}
   \item Once a filesystem image has been created, one can access and
     modifies its contents from the development workstation, using the
-    {\bf loop} mechanism
+    {\bf loop} mechanism:
   \item Example:\\
-    \code{genext2fs -d rootfs/ rootfs.img}\\
     \code{mkdir /tmp/tst}\\
     \code{mount -t ext2 -o loop rootfs.img /tmp/tst}
   \item In the \code{/tmp/tst} directory, one can access and modify