Linux: Volatile Superstition
"People who think 'volatile' really matters are just fooling themselves," Linus Torvalds quipped during a lengthy discussion on the Linux Kernel mailing list. The thread began with a series of patches to "make atomic_read() behave consistently across all architectures" which included "removing the volatile keyword from all atomic_t and atomic64_t definitions that currently have it, and instead explicitly [casting] the variable as volatile in atomic_read()."
Earlier in the discussion Linus had suggested that while it didn't actually fix any bugs it did help hide bugs and make them less likely to be triggered.
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