From: Hugh Dickins <hugh@veritas.com>
Date: Sun, 30 Oct 2005 01:16:05 +0000 (-0700)
Subject: [PATCH] mm: batch updating mm_counters
X-Git-Tag: v2.6.15-rc1~730^2^2~59
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ae859762332f19bfc06f4c4a1b1fefb41e9e1084;p=pandora-kernel.git

[PATCH] mm: batch updating mm_counters

tlb_finish_mmu used to batch zap_pte_range's update of mm rss, which may be
worthwhile if the mm is contended, and would reduce atomic operations if the
counts were atomic.  Let zap_pte_range now batch its updates to file_rss and
anon_rss, per page-table in case we drop the lock outside; and copy_pte_range
batch them too.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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