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eal/freebsd: lock memory device to prevent conflicts
Only a single DPDK process on the system can be using the /dev/contigmem mappings at a time, but this was never explicitly enforced, e.g. when using --in-memory flag on two processes. To prevent possible conflict issues, we lock the dev node when it's in use, preventing other DPDK processes from starting up and causing problems for us. Fixes: 764bf26 ("add FreeBSD support") Cc: stable@dpdk.org Signed-off-by: Bruce Richardson <bruce.richardson@intel.com> Reviewed-by: Anatoly Burakov <anatoly.burakov@intel.com>
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