+ drivers-base-memoryc-cache-blocks-in-radix-tree-to-accelerate-lookup-fix.patch added to -mm tree

+ drivers-base-memoryc-cache-blocks-in-radix-tree-to-accelerate-lookup-fix.patch added to -mm tree

[akpm]

The patch titled
     Subject: drivers-base-memoryc-cache-blocks-in-radix-tree-to-accelerate-lookup-fix
has been added to the -mm tree.  Its filename is
     drivers-base-memoryc-cache-blocks-in-radix-tree-to-accelerate-lookup-fix.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/drivers-base-memoryc-cache-blocks-in-radix-tree-to-accelerate-lookup-fix.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/drivers-base-memoryc-cache-blocks-in-radix-tree-to-accelerate-lookup-fix.patch

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------------------------------------------------------
From: Andrew Morton <akpm@linux-foundation.org>
Subject: drivers-base-memoryc-cache-blocks-in-radix-tree-to-accelerate-lookup-fix

document the radix tree locking

Cc: David Hildenbrand <david@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nathan Lynch <nathanl@linux.ibm.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Rick Lindsley <ricklind@linux.vnet.ibm.com>
Cc: Scott Cheloha <cheloha@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/base/memory.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/base/memory.c~drivers-base-memoryc-cache-blocks-in-radix-tree-to-accelerate-lookup-fix
+++ a/drivers/base/memory.c
@@ -61,6 +61,9 @@ static struct bus_type memory_subsys = {
  * Memory blocks are cached in a local radix tree to avoid
  * a costly linear search for the corresponding device on
  * the subsystem bus.
+ *
+ * Protected by mem_hotplug_lock in mem_hotplug_begin(), and by the guaranteed
+ * single-threadness at boot time.
  */
 static RADIX_TREE(memory_blocks, GFP_KERNEL);
 
_

Patches currently in -mm which might be from akpm@linux-foundation.org are

mm.patch
drivers-base-memoryc-cache-blocks-in-radix-tree-to-accelerate-lookup-fix.patch
mm-oom-avoid-printk-iteration-under-rcu-fix.patch
linux-next-fix.patch
drivers-block-null_blk_mainc-fix-layout.patch
drivers-block-null_blk_mainc-fix-uninitialized-var-warnings.patch
proc-convert-everything-to-struct-proc_ops-fix.patch
drivers-tty-serial-sh-scic-suppress-warning.patch
kernel-forkc-export-kernel_thread-to-modules.patch