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tools: Add a README note about fw_printenv lock file

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Add a mention of the lock file to the README for the fw_printenv tool.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reported-by: Luka Perkov <uboot@lukaperkov.net>
master
Joe Hershberger 12 years ago committed by Tom Rini
parent 586197dfe4
commit 1c4ea78aa7
1 changed files with 4 additions and 0 deletions
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      tools/env/README

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tools/env/README vendored
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@ -55,3 +55,7 @@ partition where the environment resides.
DEVICEx_ENVSECTORS defines the number of sectors that may be used for
this environment instance. On NAND this is used to limit the range
within which bad blocks are skipped, on NOR it is not used.
To prevent losing changes to the environment and to prevent confusing the MTD
drivers, a lock file at /var/lock/fw_printenv.lock is used to serialize access
to the environment.

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