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[PATCH] compound page: no access_process_vm check

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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>
This commit is contained in:
Hugh Dickins 2006-02-14 13:52:59 -08:00 committed by Linus Torvalds
parent d98c7a0984
commit 16bf134840
1 changed files with 1 additions and 2 deletions

3
kernel/ptrace.c

@ -242,8 +242,7 @@ int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, in
if (write) { if (write) {
copy_to_user_page(vma, page, addr, copy_to_user_page(vma, page, addr,
maddr + offset, buf, bytes); maddr + offset, buf, bytes);
if (!PageCompound(page)) set_page_dirty_lock(page);
set_page_dirty_lock(page);
} else { } else {
copy_from_user_page(vma, page, addr, copy_from_user_page(vma, page, addr,
buf, maddr + offset, bytes); buf, maddr + offset, bytes);