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authorDenys Vlasenko <vda.linux@googlemail.com>2015-02-12 16:18:39 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2015-02-12 17:05:14 +0100
commit1fd844267c3ad60e9122e141768e823e6ad74a28 (patch)
tree2a02a15313320bcb3a7d53f02743603a79a4333e /docs/ifupdown_design.txt
parent622a7aab2c4a918c0e71931505f5c38d66d81ad9 (diff)
downloadbusybox-1fd844267c3ad60e9122e141768e823e6ad74a28.tar.gz
modprobe-small: if concurrent module load did not succeed, wait
usecase: two sd cards are being mounted in parallel at same time on dual core. example modules which are getting loaded is nls_cp437. While one module is being loaded , it makes state in /proc/modules as 'coming' and then starts doing its module init function (in our case - registering nls). meanwhile on other core, if modprobe returns that is has already been loaded, then it will continue and search for the nls list which is not yet finished from first module init. This fails resulting in not mounting sd card. function old new delta process_module 667 746 +79 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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