altos: Stick a mutex around FAT operations
authorKeith Packard <keithp@keithp.com>
Fri, 12 Apr 2013 09:35:15 +0000 (02:35 -0700)
committerKeith Packard <keithp@keithp.com>
Fri, 12 Apr 2013 09:37:24 +0000 (02:37 -0700)
This allows the command line and logging operations to occur safely in parallel

Signed-off-by: Keith Packard <keithp@keithp.com>

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