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SubjectRe: [PATCH 0/24] make atomic_read() behave consistently across all architectures
On Tue, 14 Aug 2007, Chris Snook wrote:

> Because atomic operations are generally used for synchronization, which
> requires volatile behavior. Most such codepaths currently use an inefficient
> barrier(). Some forget to and we get bugs, because people assume that
> atomic_read() actually reads something, and atomic_write() actually writes
> something. Worse, these are architecture-specific, even compiler
> version-specific bugs that are often difficult to track down.

Looks like we need to have lock and unlock semantics?


which has no barrier or volatile implications.


Acquire semantics?


Release semantics?

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