Messages in this thread | | | Date | Mon, 22 Nov 1999 13:07:11 -0500 (EST) | From | "Benjamin C.R. LaHaise" <> | Subject | Re: [PATCH] i386 rw semaphore + use for mmap_sem |
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On Mon, 22 Nov 1999, Marcelo Tosatti wrote:
> Your code wakes up all writers (if there are any) in read_up. > Since just one writer will get the lock, i think its more interesting to > wake one process.
Look closer -- writers add themselves with the EXCLUSIVE flag. There's a race in the down_write_failed case that I've fixed (the writer owning the bias must add itself to the head of the wait queue) and will be posting an updated patch for soon.
-ben
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