From 7c1fd6b964860cdcf44b6b98d7dcd8cc16a0a26d Mon Sep 17 00:00:00 2001
From: Hugh Dickins <hugh@veritas.com>
Date: Sat, 29 Oct 2005 18:15:58 -0700
Subject: [PATCH] [PATCH] mm: exit_mmap need not reset

exit_mmap resets various mm_struct fields, but the mm is well on its way out,
and none of those fields matter by this point.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 mm/mmap.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/mm/mmap.c b/mm/mmap.c
index a3984fad3fc2..459b9f068ad7 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1948,12 +1948,6 @@ void exit_mmap(struct mm_struct *mm)
 	free_pgtables(&tlb, vma, FIRST_USER_ADDRESS, 0);
 	tlb_finish_mmu(tlb, 0, end);
 
-	mm->mmap = mm->mmap_cache = NULL;
-	mm->mm_rb = RB_ROOT;
-	set_mm_counter(mm, rss, 0);
-	mm->total_vm = 0;
-	mm->locked_vm = 0;
-
 	spin_unlock(&mm->page_table_lock);
 
 	/*
-- 
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