Changing +d => +m could generate 'xadd (%%xyz),(%%eax)' which does not exist.
Maybe +r, but in this case do not forget to add push/pop %%edx around
call to rwsem_wake. Otherwise you can have some corruption if gcc decides
to use %edx for some local variable around __up_read.
Best regards,
Petr Vandrovec
vandrove@vc.cvut.cz
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