Patch "rbd: use GFP_NOIO in rbd_obj_request_create()" has been added to the 3.14-stable tree

Patch "rbd: use GFP_NOIO in rbd_obj_request_create()" has been added to the 3.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    rbd: use GFP_NOIO in rbd_obj_request_create()

to the 3.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     rbd-use-gfp_noio-in-rbd_obj_request_create.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 5a60e87603c4c533492c515b7f62578189b03c9c Mon Sep 17 00:00:00 2001
From: Ilya Dryomov <idryomov@gmail.com>
Date: Wed, 24 Jun 2015 17:24:33 +0300
Subject: rbd: use GFP_NOIO in rbd_obj_request_create()

From: Ilya Dryomov <idryomov@gmail.com>

commit 5a60e87603c4c533492c515b7f62578189b03c9c upstream.

rbd_obj_request_create() is called on the main I/O path, so we need to
use GFP_NOIO to make sure allocation doesn't blow back on us.  Not all
callers need this, but I'm still hardcoding the flag inside rather than
making it a parameter because a) this is going to stable, and b) those
callers shouldn't really use rbd_obj_request_create() and will be fixed
in the future.

More memory allocation fixes will follow.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/block/rbd.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1826,11 +1826,11 @@ static struct rbd_obj_request *rbd_obj_r
 	rbd_assert(obj_request_type_valid(type));
 
 	size = strlen(object_name) + 1;
-	name = kmalloc(size, GFP_KERNEL);
+	name = kmalloc(size, GFP_NOIO);
 	if (!name)
 		return NULL;
 
-	obj_request = kmem_cache_zalloc(rbd_obj_request_cache, GFP_KERNEL);
+	obj_request = kmem_cache_zalloc(rbd_obj_request_cache, GFP_NOIO);
 	if (!obj_request) {
 		kfree(name);
 		return NULL;


Patches currently in stable-queue which might be from idryomov@gmail.com are

queue-3.14/crush-fix-a-bug-in-tree-bucket-decode.patch
queue-3.14/rbd-use-gfp_noio-in-rbd_obj_request_create.patch