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: <202211110629.wIFppGBG-lkp@intel.com>
Date:   Fri, 11 Nov 2022 06:21:22 +0800
From:   kernel test robot <lkp@...el.com>
To:     David Howells <dhowells@...hat.com>, willy@...radead.org
Cc:     oe-kbuild-all@...ts.linux.dev, dhowells@...hat.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: Make some folio and page function arguments const
 and use bool

Hi David,

I love your patch! Perhaps something to improve:

[auto build test WARNING on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/David-Howells/mm-Make-some-folio-and-page-function-arguments-const-and-use-bool/20221111-012958
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/166810136860.3462948.16794726061248137027.stgit%40warthog.procyon.org.uk
patch subject: [PATCH] mm: Make some folio and page function arguments const and use bool
config: m68k-allyesconfig
compiler: m68k-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/3fb73cfd420034dbced68189dcfd7fb204a9018d
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review David-Howells/mm-Make-some-folio-and-page-function-arguments-const-and-use-bool/20221111-012958
        git checkout 3fb73cfd420034dbced68189dcfd7fb204a9018d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k prepare

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   In file included from include/linux/percpu.h:5,
                    from include/linux/hrtimer.h:19,
                    from include/linux/sched.h:20,
                    from arch/m68k/kernel/asm-offsets.c:15:
   include/linux/page-flags.h: In function 'const_folio_flags':
>> include/linux/page-flags.h:316:43: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     316 |         VM_BUG_ON_PGFLAGS(PageTail(page), page);
         |                                           ^~~~
   include/linux/mmdebug.h:21:35: note: in definition of macro 'VM_BUG_ON_PAGE'
      21 |                         dump_page(page, "VM_BUG_ON_PAGE(" __stringify(cond)")");\
         |                                   ^~~~
   include/linux/page-flags.h:316:9: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     316 |         VM_BUG_ON_PGFLAGS(PageTail(page), page);
         |         ^~~~~~~~~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   include/linux/page-flags.h:317:70: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     317 |         VM_BUG_ON_PGFLAGS(n > 0 && !test_bit(PG_head, &page->flags), page);
         |                                                                      ^~~~
   include/linux/mmdebug.h:21:35: note: in definition of macro 'VM_BUG_ON_PAGE'
      21 |                         dump_page(page, "VM_BUG_ON_PAGE(" __stringify(cond)")");\
         |                                   ^~~~
   include/linux/page-flags.h:317:9: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     317 |         VM_BUG_ON_PGFLAGS(n > 0 && !test_bit(PG_head, &page->flags), page);
         |         ^~~~~~~~~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   In file included from include/linux/thread_info.h:27,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/m68k/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:78,
                    from arch/m68k/include/asm/irqflags.h:6,
                    from include/linux/irqflags.h:16,
                    from arch/m68k/include/asm/atomic.h:6,
                    from include/linux/atomic.h:7,
                    from include/linux/rcupdate.h:25,
                    from include/linux/rculist.h:11,
                    from include/linux/pid.h:5,
                    from include/linux/sched.h:14:
   include/linux/page-flags.h: In function 'PageLocked':
   include/linux/page-flags.h:389:39: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                       ^~~~
   include/linux/bitops.h:50:44: note: in definition of macro 'bitop'
      50 |           __builtin_constant_p((uintptr_t)(addr) != (uintptr_t)NULL) && \
         |                                            ^~~~
   include/linux/page-flags.h:389:10: note: in expansion of macro 'test_bit'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |          ^~~~~~~~
   include/linux/mmdebug.h:110:39: note: in expansion of macro 'VM_BUG_ON_PAGE'
     110 | #define VM_BUG_ON_PGFLAGS(cond, page) VM_BUG_ON_PAGE(cond, page)
         |                                       ^~~~~~~~~~~~~~
   include/linux/page-flags.h:365:17: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     365 |                 VM_BUG_ON_PGFLAGS(enforce && PageTail(page), page);     \
         |                 ^~~~~~~~~~~~~~~~~
   include/linux/page-flags.h:389:32: note: in expansion of macro 'PF_NO_TAIL'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                ^~~~~~
   include/linux/page-flags.h:439:9: note: in expansion of macro 'TESTPAGEFLAG'
     439 |         TESTPAGEFLAG(uname, lname, policy)                              \
         |         ^~~~~~~~~~~~
   include/linux/page-flags.h:479:1: note: in expansion of macro '__PAGEFLAG'
     479 | __PAGEFLAG(Locked, locked, PF_NO_TAIL)
         | ^~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   include/linux/page-flags.h:257:34: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     257 | #define compound_head(page)     ((typeof(page))_compound_head(page))
         |                                 ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitops.h:50:44: note: in definition of macro 'bitop'
      50 |           __builtin_constant_p((uintptr_t)(addr) != (uintptr_t)NULL) && \
         |                                            ^~~~
   include/linux/page-flags.h:389:10: note: in expansion of macro 'test_bit'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |          ^~~~~~~~
   include/linux/mmdebug.h:110:39: note: in expansion of macro 'VM_BUG_ON_PAGE'
     110 | #define VM_BUG_ON_PGFLAGS(cond, page) VM_BUG_ON_PAGE(cond, page)
         |                                       ^~~~~~~~~~~~~~
   include/linux/page-flags.h:357:17: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     357 |                 VM_BUG_ON_PGFLAGS(PagePoisoned(page), page);            \
         |                 ^~~~~~~~~~~~~~~~~
   include/linux/page-flags.h:366:17: note: in expansion of macro 'PF_POISONED_CHECK'
     366 |                 PF_POISONED_CHECK(compound_head(page)); })
         |                 ^~~~~~~~~~~~~~~~~
   include/linux/page-flags.h:366:35: note: in expansion of macro 'compound_head'
     366 |                 PF_POISONED_CHECK(compound_head(page)); })
         |                                   ^~~~~~~~~~~~~
   include/linux/page-flags.h:389:32: note: in expansion of macro 'PF_NO_TAIL'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                ^~~~~~
   include/linux/page-flags.h:439:9: note: in expansion of macro 'TESTPAGEFLAG'
     439 |         TESTPAGEFLAG(uname, lname, policy)                              \
         |         ^~~~~~~~~~~~
   include/linux/page-flags.h:479:1: note: in expansion of macro '__PAGEFLAG'
     479 | __PAGEFLAG(Locked, locked, PF_NO_TAIL)
         | ^~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   include/linux/page-flags.h:389:39: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                       ^~~~
   include/linux/bitops.h:51:23: note: in definition of macro 'bitop'
--
   In file included from include/linux/percpu.h:5,
                    from include/linux/percpu_counter.h:14,
                    from include/linux/mm_types.h:21,
                    from include/linux/buildid.h:5,
                    from include/linux/module.h:14,
                    from arch/m68k/kernel/ints.c:9:
   include/linux/page-flags.h: In function 'const_folio_flags':
>> include/linux/page-flags.h:316:43: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     316 |         VM_BUG_ON_PGFLAGS(PageTail(page), page);
         |                                           ^~~~
   include/linux/mmdebug.h:21:35: note: in definition of macro 'VM_BUG_ON_PAGE'
      21 |                         dump_page(page, "VM_BUG_ON_PAGE(" __stringify(cond)")");\
         |                                   ^~~~
   include/linux/page-flags.h:316:9: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     316 |         VM_BUG_ON_PGFLAGS(PageTail(page), page);
         |         ^~~~~~~~~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   include/linux/page-flags.h:317:70: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     317 |         VM_BUG_ON_PGFLAGS(n > 0 && !test_bit(PG_head, &page->flags), page);
         |                                                                      ^~~~
   include/linux/mmdebug.h:21:35: note: in definition of macro 'VM_BUG_ON_PAGE'
      21 |                         dump_page(page, "VM_BUG_ON_PAGE(" __stringify(cond)")");\
         |                                   ^~~~
   include/linux/page-flags.h:317:9: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     317 |         VM_BUG_ON_PGFLAGS(n > 0 && !test_bit(PG_head, &page->flags), page);
         |         ^~~~~~~~~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   In file included from include/linux/thread_info.h:27,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/m68k/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:78,
                    from arch/m68k/include/asm/irqflags.h:6,
                    from include/linux/irqflags.h:16,
                    from arch/m68k/include/asm/atomic.h:6,
                    from include/linux/atomic.h:7,
                    from include/linux/mm_types_task.h:13,
                    from include/linux/mm_types.h:5:
   include/linux/page-flags.h: In function 'PageLocked':
   include/linux/page-flags.h:389:39: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                       ^~~~
   include/linux/bitops.h:50:44: note: in definition of macro 'bitop'
      50 |           __builtin_constant_p((uintptr_t)(addr) != (uintptr_t)NULL) && \
         |                                            ^~~~
   include/linux/page-flags.h:389:10: note: in expansion of macro 'test_bit'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |          ^~~~~~~~
   include/linux/mmdebug.h:110:39: note: in expansion of macro 'VM_BUG_ON_PAGE'
     110 | #define VM_BUG_ON_PGFLAGS(cond, page) VM_BUG_ON_PAGE(cond, page)
         |                                       ^~~~~~~~~~~~~~
   include/linux/page-flags.h:365:17: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     365 |                 VM_BUG_ON_PGFLAGS(enforce && PageTail(page), page);     \
         |                 ^~~~~~~~~~~~~~~~~
   include/linux/page-flags.h:389:32: note: in expansion of macro 'PF_NO_TAIL'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                ^~~~~~
   include/linux/page-flags.h:439:9: note: in expansion of macro 'TESTPAGEFLAG'
     439 |         TESTPAGEFLAG(uname, lname, policy)                              \
         |         ^~~~~~~~~~~~
   include/linux/page-flags.h:479:1: note: in expansion of macro '__PAGEFLAG'
     479 | __PAGEFLAG(Locked, locked, PF_NO_TAIL)
         | ^~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   include/linux/page-flags.h:257:34: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     257 | #define compound_head(page)     ((typeof(page))_compound_head(page))
         |                                 ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitops.h:50:44: note: in definition of macro 'bitop'
      50 |           __builtin_constant_p((uintptr_t)(addr) != (uintptr_t)NULL) && \
         |                                            ^~~~
   include/linux/page-flags.h:389:10: note: in expansion of macro 'test_bit'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |          ^~~~~~~~
   include/linux/mmdebug.h:110:39: note: in expansion of macro 'VM_BUG_ON_PAGE'
     110 | #define VM_BUG_ON_PGFLAGS(cond, page) VM_BUG_ON_PAGE(cond, page)
         |                                       ^~~~~~~~~~~~~~
   include/linux/page-flags.h:357:17: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     357 |                 VM_BUG_ON_PGFLAGS(PagePoisoned(page), page);            \
         |                 ^~~~~~~~~~~~~~~~~
   include/linux/page-flags.h:366:17: note: in expansion of macro 'PF_POISONED_CHECK'
     366 |                 PF_POISONED_CHECK(compound_head(page)); })
         |                 ^~~~~~~~~~~~~~~~~
   include/linux/page-flags.h:366:35: note: in expansion of macro 'compound_head'
     366 |                 PF_POISONED_CHECK(compound_head(page)); })
         |                                   ^~~~~~~~~~~~~
   include/linux/page-flags.h:389:32: note: in expansion of macro 'PF_NO_TAIL'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                ^~~~~~
   include/linux/page-flags.h:439:9: note: in expansion of macro 'TESTPAGEFLAG'
     439 |         TESTPAGEFLAG(uname, lname, policy)                              \
         |         ^~~~~~~~~~~~
   include/linux/page-flags.h:479:1: note: in expansion of macro '__PAGEFLAG'
     479 | __PAGEFLAG(Locked, locked, PF_NO_TAIL)
         | ^~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   include/linux/page-flags.h:389:39: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                       ^~~~
   include/linux/bitops.h:51:23: note: in definition of macro 'bitop'
      51 |           (uintptr_t)(addr) != (uintptr_t)NULL &&                       \
         |                       ^~~~
--
   In file included from include/linux/percpu.h:5,
                    from include/linux/hrtimer.h:19,
                    from include/linux/sched.h:20,
                    from arch/m68k/kernel/vectors.c:20:
   include/linux/page-flags.h: In function 'const_folio_flags':
>> include/linux/page-flags.h:316:43: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     316 |         VM_BUG_ON_PGFLAGS(PageTail(page), page);
         |                                           ^~~~
   include/linux/mmdebug.h:21:35: note: in definition of macro 'VM_BUG_ON_PAGE'
      21 |                         dump_page(page, "VM_BUG_ON_PAGE(" __stringify(cond)")");\
         |                                   ^~~~
   include/linux/page-flags.h:316:9: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     316 |         VM_BUG_ON_PGFLAGS(PageTail(page), page);
         |         ^~~~~~~~~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   include/linux/page-flags.h:317:70: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     317 |         VM_BUG_ON_PGFLAGS(n > 0 && !test_bit(PG_head, &page->flags), page);
         |                                                                      ^~~~
   include/linux/mmdebug.h:21:35: note: in definition of macro 'VM_BUG_ON_PAGE'
      21 |                         dump_page(page, "VM_BUG_ON_PAGE(" __stringify(cond)")");\
         |                                   ^~~~
   include/linux/page-flags.h:317:9: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     317 |         VM_BUG_ON_PGFLAGS(n > 0 && !test_bit(PG_head, &page->flags), page);
         |         ^~~~~~~~~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   In file included from include/linux/thread_info.h:27,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/m68k/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:78,
                    from arch/m68k/include/asm/irqflags.h:6,
                    from include/linux/irqflags.h:16,
                    from arch/m68k/include/asm/atomic.h:6,
                    from include/linux/atomic.h:7,
                    from include/linux/rcupdate.h:25,
                    from include/linux/rculist.h:11,
                    from include/linux/pid.h:5,
                    from include/linux/sched.h:14:
   include/linux/page-flags.h: In function 'PageLocked':
   include/linux/page-flags.h:389:39: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                       ^~~~
   include/linux/bitops.h:50:44: note: in definition of macro 'bitop'
      50 |           __builtin_constant_p((uintptr_t)(addr) != (uintptr_t)NULL) && \
         |                                            ^~~~
   include/linux/page-flags.h:389:10: note: in expansion of macro 'test_bit'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |          ^~~~~~~~
   include/linux/mmdebug.h:110:39: note: in expansion of macro 'VM_BUG_ON_PAGE'
     110 | #define VM_BUG_ON_PGFLAGS(cond, page) VM_BUG_ON_PAGE(cond, page)
         |                                       ^~~~~~~~~~~~~~
   include/linux/page-flags.h:365:17: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     365 |                 VM_BUG_ON_PGFLAGS(enforce && PageTail(page), page);     \
         |                 ^~~~~~~~~~~~~~~~~
   include/linux/page-flags.h:389:32: note: in expansion of macro 'PF_NO_TAIL'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                ^~~~~~
   include/linux/page-flags.h:439:9: note: in expansion of macro 'TESTPAGEFLAG'
     439 |         TESTPAGEFLAG(uname, lname, policy)                              \
         |         ^~~~~~~~~~~~
   include/linux/page-flags.h:479:1: note: in expansion of macro '__PAGEFLAG'
     479 | __PAGEFLAG(Locked, locked, PF_NO_TAIL)
         | ^~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   include/linux/page-flags.h:257:34: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     257 | #define compound_head(page)     ((typeof(page))_compound_head(page))
         |                                 ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bitops.h:50:44: note: in definition of macro 'bitop'
      50 |           __builtin_constant_p((uintptr_t)(addr) != (uintptr_t)NULL) && \
         |                                            ^~~~
   include/linux/page-flags.h:389:10: note: in expansion of macro 'test_bit'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |          ^~~~~~~~
   include/linux/mmdebug.h:110:39: note: in expansion of macro 'VM_BUG_ON_PAGE'
     110 | #define VM_BUG_ON_PGFLAGS(cond, page) VM_BUG_ON_PAGE(cond, page)
         |                                       ^~~~~~~~~~~~~~
   include/linux/page-flags.h:357:17: note: in expansion of macro 'VM_BUG_ON_PGFLAGS'
     357 |                 VM_BUG_ON_PGFLAGS(PagePoisoned(page), page);            \
         |                 ^~~~~~~~~~~~~~~~~
   include/linux/page-flags.h:366:17: note: in expansion of macro 'PF_POISONED_CHECK'
     366 |                 PF_POISONED_CHECK(compound_head(page)); })
         |                 ^~~~~~~~~~~~~~~~~
   include/linux/page-flags.h:366:35: note: in expansion of macro 'compound_head'
     366 |                 PF_POISONED_CHECK(compound_head(page)); })
         |                                   ^~~~~~~~~~~~~
   include/linux/page-flags.h:389:32: note: in expansion of macro 'PF_NO_TAIL'
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                ^~~~~~
   include/linux/page-flags.h:439:9: note: in expansion of macro 'TESTPAGEFLAG'
     439 |         TESTPAGEFLAG(uname, lname, policy)                              \
         |         ^~~~~~~~~~~~
   include/linux/page-flags.h:479:1: note: in expansion of macro '__PAGEFLAG'
     479 | __PAGEFLAG(Locked, locked, PF_NO_TAIL)
         | ^~~~~~~~~~
   include/linux/mmdebug.h:12:29: note: expected 'struct page *' but argument is of type 'const struct page *'
      12 | void dump_page(struct page *page, const char *reason);
         |                ~~~~~~~~~~~~~^~~~
   include/linux/page-flags.h:389:39: warning: passing argument 1 of 'dump_page' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     389 | { return test_bit(PG_##lname, &policy(page, 0)->flags); }
         |                                       ^~~~
   include/linux/bitops.h:51:23: note: in definition of macro 'bitop'
..


vim +316 include/linux/page-flags.h

   311	
   312	static const unsigned long *const_folio_flags(const struct folio *folio, unsigned n)
   313	{
   314		const struct page *page = &folio->page;
   315	
 > 316		VM_BUG_ON_PGFLAGS(PageTail(page), page);
   317		VM_BUG_ON_PGFLAGS(n > 0 && !test_bit(PG_head, &page->flags), page);
   318		return &page[n].flags;
   319	}
   320	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

View attachment "config" of type "text/plain" (282843 bytes)

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ