Messages in this thread |  | | Date | Wed, 19 Sep 2001 20:45:46 +0200 | From | Andrea Arcangeli <> | Subject | Re: Deadlock on the mm->mmap_sem |
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On Wed, Sep 19, 2001 at 02:16:56PM -0400, Benjamin LaHaise wrote: > I don't know about you, but I'm mildly concerned that copyright attributions > vanished.
can you be more precise? which copyright attribution? my rwsem are written totally from scratch, they doesn't share anything with the previous code, it is just a code replacement. As far I can tell deleted some file, and with it also its headers but that seems not to infinge any copyright, I didn't removed only the copyright attribution. If I removed only the copyright attribution please let me know of course, that would been a silly mistake.
To be pedantic the only idea I shared with the old code (but that's just the idea, not the implementation, so AFIK only a patent on such idea could protect it from its free usage usage) is to return the rwsem again from rwsem_wake and friends to avoid saving it in the asm slow path, and I written that:
/* * We return the semaphore itself from the C functions so we can pass it * in %eax via regparm and we don't need to declare %eax clobbered by C. * This is mostly for x86 but maybe other archs can make a use of it * too. * Idea is from David Howells <dhowells@redhat.com>. */
And the xadd version is scheduled for removal anyways soon btw (David just dropped it in its implementation).
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