On Sat, 14 Jun 2014, Fabian Frederick wrote:

> Use GFP_NOFS instead of its definition.
> 
> Cc: Jens Axboe <[email protected]>
> Signed-off-by: Fabian Frederick <[email protected]>
> ---
>  block/bio.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/block/bio.c b/block/bio.c
> index 8c2e55e..ec5d172 100644
> --- a/block/bio.c
> +++ b/block/bio.c
> @@ -211,7 +211,7 @@ fallback:
>               bvl = mempool_alloc(pool, gfp_mask);
>       } else {
>               struct biovec_slab *bvs = bvec_slabs + *idx;
> -             gfp_t __gfp_mask = gfp_mask & ~(__GFP_WAIT | __GFP_IO);
> +             gfp_t __gfp_mask = gfp_mask & ~GFP_NOFS;
>  
>               /*
>                * Make this allocation restricted and don't dump info on
> -- 
> 1.8.4.5

Please no.  The original was fine, this just makes it harder to read.

GFP_NOFS is a useful and widely used combination of flags for passing
down to the page allocator; but it is merely obscure when used as you
have for masking bits off.

(But I confess to hypocrisy in finding "& ~GFP_KERNEL" useful myself
in the past somewhere.)

Hugh
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