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Date: Fri, 27 Apr 2018 11:41:31 -0700 (PDT) From: David Rientjes <rientjes@...gle.com> To: Vlastimil Babka <vbabka@...e.cz> cc: Michal Hocko <mhocko@...nel.org>, Roman Gushchin <guro@...com>, linux-mm@...ck.org, linux-kernel@...r.kernel.org, linux-api@...r.kernel.org, kernel-team@...com, Matthew Wilcox <willy@...radead.org>, Andrew Morton <akpm@...ux-foundation.org>, Alexander Viro <viro@...iv.linux.org.uk>, Johannes Weiner <hannes@...xchg.org> Subject: Re: [PATCH] mm: don't show nr_indirectly_reclaimable in /proc/vmstat On Fri, 27 Apr 2018, Vlastimil Babka wrote: > It was in the original thread, see e.g. > <08524819-14ef-81d0-fa90-d7af13c6b9d5@...e.cz> > > However it will take some time to get that in mainline, and meanwhile > the current implementation does prevent a DOS. So I doubt it can be > fully reverted - as a compromise I just didn't want the counter to > become ABI. TBH though, other people at LSF/MM didn't seem concerned > that /proc/vmstat is an ABI that we can't change (i.e. counters have > been presumably removed in the past already). > What prevents this from being a simple atomic_t that gets added to in __d_alloc(), subtracted from in __d_free_external_name(), and read in si_mem_available() and __vm_enough_memory()?
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