From 16bf134840da3920ded1290973c56ec214636f12 Mon Sep 17 00:00:00 2001
From: Hugh Dickins <hugh@veritas.com>
Date: Tue, 14 Feb 2006 13:52:59 -0800
Subject: [PATCH] [PATCH] compound page: no access_process_vm check
The PageCompound check before access_process_vm's set_page_dirty_lock is no
longer necessary, so remove it. But leave the PageCompound checks in
bio_set_pages_dirty, dio_bio_complete and nfs_free_user_pages: at least some
of those were introduced as a little optimization on hugetlb pages.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
kernel/ptrace.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 5f33cdb6fff5f..d2cf144d0af51 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -242,8 +242,7 @@ int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, in
if (write) {
copy_to_user_page(vma, page, addr,
maddr + offset, buf, bytes);
- if (!PageCompound(page))
- set_page_dirty_lock(page);
+ set_page_dirty_lock(page);
} else {
copy_from_user_page(vma, page, addr,
buf, maddr + offset, bytes);
--
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