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SubjectRe: [PATCH 6/7] mm/gup: Combine parameters into struct
Hi Keith,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.19-rc4 next-20180920]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Keith-Busch/mm-faster-get-user-pages/20180920-184931
config: sh-rsk7201_defconfig (attached as .config)
compiler: sh4-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=sh

All warnings (new ones prefixed by >>):

In file included from include/linux/mm.h:506:0,
from arch/sh/kernel/asm-offsets.c:14:
>> include/linux/huge_mm.h:344:53: warning: 'struct gup_context' declared inside parameter list will not be visible outside of this definition or declaration
static inline struct page *follow_devmap_pmd(struct gup_context *ctx, pmd_t *pmd)
^~~~~~~~~~~
include/linux/huge_mm.h:349:53: warning: 'struct gup_context' declared inside parameter list will not be visible outside of this definition or declaration
static inline struct page *follow_devmap_pud(struct gup_context *ctx, pud_t *pud)
^~~~~~~~~~~
--
In file included from include/linux/mm.h:506:0,
from arch/sh/kernel/asm-offsets.c:14:
>> include/linux/huge_mm.h:344:53: warning: 'struct gup_context' declared inside parameter list will not be visible outside of this definition or declaration
static inline struct page *follow_devmap_pmd(struct gup_context *ctx, pmd_t *pmd)
^~~~~~~~~~~
include/linux/huge_mm.h:349:53: warning: 'struct gup_context' declared inside parameter list will not be visible outside of this definition or declaration
static inline struct page *follow_devmap_pud(struct gup_context *ctx, pud_t *pud)
^~~~~~~~~~~
<stdin>:1317:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp]
<stdin>:1320:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp]
<stdin>:1323:2: warning: #warning syscall pkey_free not implemented [-Wcpp]
<stdin>:1326:2: warning: #warning syscall statx not implemented [-Wcpp]
<stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
<stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp]

vim +344 include/linux/huge_mm.h

343
> 344 static inline struct page *follow_devmap_pmd(struct gup_context *ctx, pmd_t *pmd)
345 {
346 return NULL;
347 }
348

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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