revlog: document that mmap resources are released implicitly by GC

Authored by yuja.

Description

revlog: document that mmap resources are released implicitly by GC

It's okay-ish, but currently the open fd and the mapping itself are leaked
until the indexdata is deallocated. If revlog had close(), the underlying
resources should be closed there as well, but AFAIK there's no such hook
point.

Details

Committed
yujaJan 13 2019, 12:56 AM
Parents
rHGcf8677cd7286: ui: proxy protect/restorestdio() calls to update internal flag
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