Re: [PATCH RFC v2 2/2] mm: Rework swap handling of zap_pte_range
From: Matthew Wilcox <willy@infradead.org>
Date: 2021-11-15 13:58:43
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On Mon, Nov 15, 2021 at 09:49:51PM +0800, Peter Xu wrote:
Clean the code up by merging the device private/exclusive swap entry handling with the rest, then we merge the pte clear operation too. struct* page is defined in multiple places in the function, move it upward.
Is that actually a good thing? There was a time when declaring variables more locally helped compilers with liveness analysis and register allocation. Compilers are probably smarter now.