[FE training-materials-updates] correct and detail mkfs.ubifs options

[Michael Opdenacker]

Repository : git://git.free-electrons.com/training-materials.git

On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=5261058ab9d8df9cc0802f4220643abc51049d17

>---------------------------------------------------------------

commit 5261058ab9d8df9cc0802f4220643abc51049d17
Author: Michael Opdenacker <michael.opdenacker at free-electrons.com>
Date:   Thu Oct 31 05:53:28 2013 +0100

    correct and detail mkfs.ubifs options
    
    - mkfs.ubifs takes the *logical* erase block size
      (reported by Marcin Bis)
    - misc improvements
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at free-electrons.com>


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5261058ab9d8df9cc0802f4220643abc51049d17
 .../sysdev-flash-filesystems.tex                   |   11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/slides/sysdev-flash-filesystems/sysdev-flash-filesystems.tex b/slides/sysdev-flash-filesystems/sysdev-flash-filesystems.tex
index 129db02..9a9db54 100644
--- a/slides/sysdev-flash-filesystems/sysdev-flash-filesystems.tex
+++ b/slides/sysdev-flash-filesystems/sysdev-flash-filesystems.tex
@@ -411,12 +411,13 @@ Creating 5 MTD partitions on "omap2-nand.0":
     \begin{itemize}
     \item \code{mkfs.ubifs -m 4096 -e 256KiB -c 1000 -r rootfs/ ubifs.img}
       \begin{itemize}
-      \item \code{-m 4096}, minimal I/O size
-      \item \code{-e 256 KiB}, erase block size
+      \item \code{-m 4096}, minimal I/O size\\
+                 (see \code{/sys/class/mtd/mtdx/writesize}).
+      \item \code{-e 252 KiB}, logical erase block size (smaller than
+                 PEB size, look at \code{dmesg})
       \item \code{-c 1000}, maximum number of logical erase
-        blocks. See
-        \url{http://www.linux-mtd.infradead.org/faq/ubifs.html\#L_max_leb_cnt}
-        for details.
+        blocks. Details:
+        {\tiny\url{http://linux-mtd.infradead.org/faq/ubifs.html\#L_max_leb_cnt}}
       \end{itemize}
     \item Can be written to a UBI volume using \code{ubiupdatevol} and
       the \code{/dev/ubiX_Y devices}