The patch titled
Subject: mm/page_ref: use atomic_set_release in page_ref_unfreeze
has been removed from the -mm tree. Its filename was
mm-page_ref-use-atomic_set_release-in-page_ref_unfreeze.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
Subject: mm/page_ref: use atomic_set_release in page_ref_unfreeze
page_ref_unfreeze() has exactly that semantic. No functional changes:
just minus one barrier and proper handling of PPro errata.
Link: http://lkml.kernel.org/r/151844393004.210639.4672319312617954272.stgit@buzz
Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/page_ref.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff -puN include/linux/page_ref.h~mm-page_ref-use-atomic_set_release-in-page_ref_unfreeze include/linux/page_ref.h
--- a/include/linux/page_ref.h~mm-page_ref-use-atomic_set_release-in-page_ref_unfreeze
+++ a/include/linux/page_ref.h
@@ -175,8 +175,7 @@ static inline void page_ref_unfreeze(str
VM_BUG_ON_PAGE(page_count(page) != 0, page);
VM_BUG_ON(count == 0);
- smp_mb();
- atomic_set(&page->_refcount, count);
+ atomic_set_release(&page->_refcount, count);
if (page_ref_tracepoint_active(__tracepoint_page_ref_unfreeze))
__page_ref_unfreeze(page, count);
}
_
Patches currently in -mm which might be from khlebnikov@xxxxxxxxxxxxxx are
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
