Messages in this thread | | | Date | Tue, 22 Jun 1999 17:06:07 +0200 (CEST) | From | Ingo Molnar <> | Subject | Re: parallel writes to the same file, 2.3.7 |
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On Tue, 22 Jun 1999, Alan Cox wrote:
> > Until 2.3.7 all file writes were serialized by the 'inode semaphore', ie. > > one big write excluded all other writers until the big write finished. > > Is this true for char devices too. If so its a welcome change but there > are a lot of drivers that need fixing 8)
yes 8) The 'easy fix' is to down()/up() the inode semaphore manually in all the ->write functions. We might want to intentionally 'break' the file_ops API right now so that these assumption changes get caught automatically?
-- mingo
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