Messages in this thread |  | | Subject | Re: question on SMP and read()/write() | Date | Sat, 28 Oct 2000 17:19:18 +0100 (BST) | From | Alan Cox <> |
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> 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 ?
Yes. This is true in 2.2 as well although the inode lock provides some protection on writes.
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