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SubjectRe: EMM: Fix rcu handling and spelling
On Wed, Apr 02, 2008 at 11:43:02AM -0700, Christoph Lameter wrote:
> Subject: EMM: Fix rcu handling and spelling
>
> Fix the way rcu_dereference is done.

Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

> Signed-off-by: Christoph Lameter <clameter@sgi.com>
>
> ---
> include/linux/rmap.h | 2 +-
> mm/rmap.c | 4 ++--
> 2 files changed, 3 insertions(+), 3 deletions(-)
>
> Index: linux-2.6/include/linux/rmap.h
> ===================================================================
> --- linux-2.6.orig/include/linux/rmap.h 2008-04-02 11:41:58.737866596 -0700
> +++ linux-2.6/include/linux/rmap.h 2008-04-02 11:42:08.282029661 -0700
> @@ -91,7 +91,7 @@ static inline void page_dup_rmap(struct
> * when the VM removes references to pages.
> */
> enum emm_operation {
> - emm_release, /* Process existing, */
> + emm_release, /* Process exiting, */
> emm_invalidate_start, /* Before the VM unmaps pages */
> emm_invalidate_end, /* After the VM unmapped pages */
> emm_referenced /* Check if a range was referenced */
> Index: linux-2.6/mm/rmap.c
> ===================================================================
> --- linux-2.6.orig/mm/rmap.c 2008-04-02 11:41:58.737866596 -0700
> +++ linux-2.6/mm/rmap.c 2008-04-02 11:42:08.282029661 -0700
> @@ -303,7 +303,7 @@ EXPORT_SYMBOL_GPL(emm_notifier_register)
> int __emm_notify(struct mm_struct *mm, enum emm_operation op,
> unsigned long start, unsigned long end)
> {
> - struct emm_notifier *e = rcu_dereference(mm)->emm_notifier;
> + struct emm_notifier *e = rcu_dereference(mm->emm_notifier);
> int x;
>
> while (e) {
> @@ -317,7 +317,7 @@ int __emm_notify(struct mm_struct *mm, e
> * emm_notifier contents (e) must be fetched after
> * the retrival of the pointer to the notifier.
> */
> - e = rcu_dereference(e)->next;
> + e = rcu_dereference(e->next);
> }
> return 0;
> }
>


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