Re: [RFC PATCH 04/10] pipe: Use head and tail pointers for the ring, not cursor and length [ver #2]
From: David Howells <dhowells@redhat.com>
Date: 2019-10-31 15:11:45
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keyrings, linux-api, linux-block, linux-fsdevel, linux-usb, lkml
How about: * We use head and tail indices that aren't masked off, except at the * point of dereference, but rather they're allowed to wrap naturally. * This means there isn't a dead spot in the buffer, provided the ring * size is a power of two and <= 2^31. David