Re: [PATCH v2 2/2] mm/vmalloc: Print a warning message first on failure

[Uladzislau Rezki]

> When a memory allocation for array of pages are not succeed
> emit a warning message as a first step and then perform the
> further cleanup.
> 
> Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
> ---
>  Makefile     | 2 +-
>  mm/vmalloc.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index bb50a5ac2e13..1d658e171495 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -430,7 +430,7 @@ HOSTCXX	= g++
>  endif
>  
>  export KBUILD_USERCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \
> -			      -O2 -fomit-frame-pointer -std=gnu89
> +			      -O0 -g -fomit-frame-pointer -std=gnu89
>  export KBUILD_USERLDFLAGS :=
>  
>  KBUILD_HOSTCFLAGS   := $(KBUILD_USERCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS)
> diff --git a/mm/vmalloc.c b/mm/vmalloc.c
> index dbc6744400d5..1f664a17d9ea 100644
> --- a/mm/vmalloc.c
> +++ b/mm/vmalloc.c
> @@ -2781,11 +2781,11 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
>  	}
>  
>  	if (!area->pages) {
> -		free_vm_area(area);
>  		warn_alloc(gfp_mask, NULL,
>  			   "vmalloc size %lu allocation failure: "
>  			   "page array size %lu allocation failed",
>  			   nr_small_pages * PAGE_SIZE, array_size);
> +		free_vm_area(area);
>  		return NULL;
>  	}
>  
> -- 
> 2.20.1
> 
Please consider a V3 of this patch. Apparently a modification of
Makefile was included in the patch. What is wrong :)