5761cf33ab
In U-Boot, filesystems may be mounted and unmounted multiple times in a single session. The JBD2 global state (caches) was only initialized once and never cleaned up, preventing proper reinitialization. Add jbd2_journal_exit_global() to properly destroy caches and reset the initialization flag. This allows the JBD2 subsystem to be cleanly reinitialized on subsequent mounts. Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com> Signed-off-by: Simon Glass <simon.glass@canonical.com>