diff options
| author | Tony Dinh <[email protected]> | 2025-09-10 14:56:03 -0700 |
|---|---|---|
| committer | Heinrich Schuchardt <[email protected]> | 2025-09-27 09:03:50 +0200 |
| commit | 6578475a9669ea74b9e9e3df2b275309862cb27f (patch) | |
| tree | d64d793085fc8046a29959b60ddacd80aeaff912 | |
| parent | 14b784aaf2a96b0f597b4fc3c5a3b4cb70f18182 (diff) | |
doc: ext4fs: update documentation for Ext4 Write configuration
Update documentation for how to configure Ext4 Write when using large
partitions.
Signed-off-by: Tony Dinh <[email protected]>
| -rw-r--r-- | doc/README.ext4 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/README.ext4 b/doc/README.ext4 index 8ecd21eee3b..ca9f19953d2 100644 --- a/doc/README.ext4 +++ b/doc/README.ext4 @@ -40,6 +40,17 @@ Also relevant are the generic filesystem commands, selected by: This does not automatically enable EXT4 support for you, you still need to do that yourself. +Lastly, the current u-boot implementation for Ext4 write requires a lot +of memory to run successfully. The following enable support for +large Ext4 partitions: + + CONFIG_EXT4_MAX_JOURNAL_ENTRIES + CONFIG_SYS_MALLOC_LEN + +The number of journal entries and dynamic memory allocation are proportional +to the partition capacity. For example, an ext4 4TB HDD partition could +require approximately 500 entries and more than 128 MB heap space. + Some sample commands to test ext4 support: 1. Check that the commands can be seen in the output of U-Boot help: |