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u3: cleanup comments about snapshot system limitations
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@ -75,14 +75,13 @@
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//! ### limitations
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//!
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//! - loom page size is fixed (16 KB), and must be a multiple of the
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//! system page size. (can the size vary at runtime give south.bin's
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//! reversed order? alternately, if system page size > ours, the fault
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//! handler could dirty N pages at a time.)
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//! - update atomicity is suspect: patch application must either
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//! completely succeed or leave on-disk segments intact. unapplied
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//! patches can be discarded (triggering event replay), but once
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//! patch application begins it must succeed.
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//! may require integration into the overall signal-handling regime.
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//! system page size.
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//! - update atomicity is crucial:
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//! - patch application must either completely succeed or
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//! leave on-disk segments (memory image) intact.
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//! - unapplied patches can be discarded (triggering event replay),
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//! but once patch application begins it must succeed.
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//! - may require integration into the overall signal-handling regime.
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//! - many errors are handled with assertions.
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//!
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//! ### enhancements
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