Hi, Why does LDDv3 say that in Read-Write Semaphore, writers are preferred over readers? Aren't r-w semaphores implemented in First Come, First Serve basis? LINK: http://lwn.net/images/pdf/LDD3/ch05.pdf When they say, writers are preferred over readers - do they mean that, if for example, a writer is currently holding the semaphore and in the queue associated with the semaphore, we have 2 readers who've done a down_read() and then if a writer were to come in with a down_write(), does the writer get the semaphore over the 2 readers before her? I would assume the semaphore is obtained by requesters in read-write order. Thanks, Hareesh -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
