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Date: Mon, 10 Apr 2017 14:06:06 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Linux-Next Mailing List <linux-next@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Huang Ying <ying.huang@intel.com>
Subject: Re: linux-next: build failure after merge of the akpm-current tree
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On Mon, 10 Apr 2017 16:45:57 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:

> Hi Andrew,
> 
> After merging the akpm-current tree, today's linux-next build (arm
> multi_v7_defconfig) failed like this:
> 
> mm/swap_slots.c: In function 'alloc_swap_slot_cache':
> mm/swap_slots.c:126:10: error: implicit declaration of function 'kvzalloc' [-Werror=implicit-function-declaration]
>   slots = kvzalloc(sizeof(swp_entry_t) * SWAP_SLOTS_CACHE_SIZE,
>           ^
> mm/swap_slots.c:126:8: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
>   slots = kvzalloc(sizeof(swp_entry_t) * SWAP_SLOTS_CACHE_SIZE,
>         ^
> mm/swap_slots.c:131:12: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
>   slots_ret = kvzalloc(sizeof(swp_entry_t) * SWAP_SLOTS_CACHE_SIZE,
>             ^
> 
> Caused by commit
> 
>   22cf2f4616c6 ("mm, swap: U=use kvzalloc to allocate some swap data structure")
> 
> The patches adding kvzalloc seem to have vanished :-(
> 
> I have reverted that commit for today.
> 

No, mm-introduce-kvalloc-helpers.patch is still in there but I had it
staged after
mm-swap-use-kvzalloc-to-allocate-some-swap-data-structure.patch.  ANd
after linux-next.patch which is presumably what tricked you.