lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20180522112230.GA5412@bombadil.infradead.org>
Date:   Tue, 22 May 2018 04:22:30 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Huaisheng Ye <yehs2007@...il.com>
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org, mhocko@...e.com,
        vbabka@...e.cz, mgorman@...hsingularity.net,
        kstewart@...uxfoundation.org, alexander.levin@...izon.com,
        gregkh@...uxfoundation.org, colyli@...e.de, chengnt@...ovo.com,
        hehy1@...ovo.com, linux-kernel@...r.kernel.org,
        iommu@...ts.linux-foundation.org, xen-devel@...ts.xenproject.org,
        linux-btrfs@...r.kernel.org, Huaisheng Ye <yehs1@...ovo.com>,
        Minchan Kim <minchan@...nel.org>,
        Nitin Gupta <ngupta@...are.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Subject: Re: [RFC PATCH v2 10/12] mm/zsmalloc: update usage of address zone
 modifiers

On Mon, May 21, 2018 at 11:20:31PM +0800, Huaisheng Ye wrote:
> @@ -343,7 +343,7 @@ static void destroy_cache(struct zs_pool *pool)
>  static unsigned long cache_alloc_handle(struct zs_pool *pool, gfp_t gfp)
>  {
>  	return (unsigned long)kmem_cache_alloc(pool->handle_cachep,
> -			gfp & ~(__GFP_HIGHMEM|__GFP_MOVABLE));
> +			gfp & ~__GFP_ZONE_MOVABLE);
>  }

This should be & ~GFP_ZONEMASK

Actually, we should probably have a function to clear those bits rather
than have every driver manipulating the gfp mask like this.  Maybe

#define gfp_normal(gfp)		((gfp) & ~GFP_ZONEMASK)

	return (unsigned long)kmem_cache_alloc(pool->handle_cachep,
-			gfp & ~(__GFP_HIGHMEM|__GFP_MOVABLE));
+			gfp_normal(gfp));

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ