question on SMP and read()/write()

From: Oliver Neukum (Oliver.Neukum@lrz.uni-muenchen.de)
Date: Sat Oct 28 2000 - 10:31:35 EDT

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Hi,

I've noticed that sys_read() and sys_write() don't grab the big kernel lock.
As file descriptors may be shared, must device drivers provide SMP safe
read() and write() methods ?

TIA
Oliver
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