From: Michal Hocko <mhocko@xxxxxxxx>
copy_params seems to be little bit confused about which allocation flags
to use. It enforces GFP_NOIO even though it uses
memalloc_noio_{save,restore} which enforces GFP_NOIO at the page
allocator level automatically (via memalloc_noio_flags). It also
uses __GFP_REPEAT for the __vmalloc request which doesn't make much
sense either because vmalloc doesn't rely on costly high order
allocations.
Cc: Shaohua Li <shli@xxxxxxxxxx>
Cc: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
---
drivers/md/dm-ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 2adf81d81fca..dfe629a294e1 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1723,7 +1723,7 @@ static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl *param_kern
if (!dmi) {
unsigned noio_flag;
noio_flag = memalloc_noio_save();
- dmi = __vmalloc(param_kernel->data_size, GFP_NOIO | __GFP_REPEAT | __GFP_HIGH | __GFP_HIGHMEM, PAGE_KERNEL);
+ dmi = __vmalloc(param_kernel->data_size, __GFP_HIGH | __GFP_HIGHMEM, PAGE_KERNEL);
memalloc_noio_restore(noio_flag);
if (dmi)
*param_flags |= DM_PARAMS_VMALLOC;
--
2.8.0.rc3
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