From: Hugh Dickins <hugh@veritas.com>
Date: Sun, 30 Oct 2005 01:16:01 +0000 (-0700)
Subject: [PATCH] mm: tlb_gather_mmu get_cpu_var
X-Git-Tag: v2.6.15-rc1~730^2^2~64
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=15a23ffa2fc91cebdac44d4aee994f59d5c28dc0;p=pandora-kernel.git

[PATCH] mm: tlb_gather_mmu get_cpu_var

tlb_gather_mmu dates from before kernel preemption was allowed, and uses
smp_processor_id or __get_cpu_var to find its per-cpu mmu_gather.  That works
because it's currently only called after getting page_table_lock, which is not
dropped until after the matching tlb_finish_mmu.  But don't rely on that, it
will soon change: now disable preemption internally by proper get_cpu_var in
tlb_gather_mmu, put_cpu_var in tlb_finish_mmu.

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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