From: Ilya Dryomov <idryomov@xxxxxxxxx>
[ Upstream commit 5a60e87603c4c533492c515b7f62578189b03c9c ]
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.
Cc: stable@xxxxxxxxxxxxxxx # 3.10+
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Reviewed-by: Alex Elder <elder@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
drivers/block/rbd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 5d684d9..501a8ca 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1998,11 +1998,11 @@ static struct rbd_obj_request *rbd_obj_request_create(const char *object_name,
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;
--
2.1.0
--
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