tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git ms head: 7daa984159c77d85f3ee053d5688ed7a47854613 commit: 7daa984159c77d85f3ee053d5688ed7a47854613 [7/7] mmap_sem: Use percpu_rw_sema config: x86_64-acpi-redef+CONFIG_DEBUG_INFO_REDUCED (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: git checkout 7daa984159c77d85f3ee053d5688ed7a47854613 # save the attached .config to linux build tree make ARCH=x86_64
All errors (new ones prefixed by >>):
In file included from include/linux/kernel.h:12:0,
from mm/mmap.c:11:
mm/mmap.c: In function 'vm_lock_anon_vma':
>> include/linux/rwsem.h:166:46: error: 'struct percpu_rw_semaphore' has no
>> member named 'dep_map'
typecheck(struct lockdep_map *, &(nest_lock)->dep_map); \
^
include/linux/typecheck.h:10:9: note: in definition of macro 'typecheck'
typeof(x) __dummy2; \
^
include/linux/mm_types.h:562:2: note: in expansion of macro
'down_write_nest_lock'
down_write_nest_lock(sem, &(nest_mm)->mmap_sem);
^~~~~~~~~~~~~~~~~~~~
mm/mmap.c:3287:3: note: in expansion of macro 'down_write_nest_lock_mmap_sem'
down_write_nest_lock_mmap_sem(&anon_vma->root->rwsem, mm);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/typecheck.h:11:18: warning: comparison of distinct pointer
types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/rwsem.h:166:2: note: in expansion of macro 'typecheck'
typecheck(struct lockdep_map *, &(nest_lock)->dep_map); \
^~~~~~~~~
include/linux/mm_types.h:562:2: note: in expansion of macro
'down_write_nest_lock'
down_write_nest_lock(sem, &(nest_mm)->mmap_sem);
^~~~~~~~~~~~~~~~~~~~
mm/mmap.c:3287:3: note: in expansion of macro 'down_write_nest_lock_mmap_sem'
down_write_nest_lock_mmap_sem(&anon_vma->root->rwsem, mm);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/notifier.h:14:0,
from include/linux/memory_hotplug.h:6,
from include/linux/mmzone.h:757,
from include/linux/gfp.h:5,
from include/linux/slab.h:14,
from mm/mmap.c:12:
include/linux/rwsem.h:167:41: error: 'struct percpu_rw_semaphore' has no
member named 'dep_map'
_down_write_nest_lock(sem, &(nest_lock)->dep_map); \
^
include/linux/mm_types.h:562:2: note: in expansion of macro
'down_write_nest_lock'
down_write_nest_lock(sem, &(nest_mm)->mmap_sem);
^~~~~~~~~~~~~~~~~~~~
mm/mmap.c:3287:3: note: in expansion of macro 'down_write_nest_lock_mmap_sem'
down_write_nest_lock_mmap_sem(&anon_vma->root->rwsem, mm);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/kernel.h:12:0,
from mm/mmap.c:11:
mm/mmap.c: In function 'vm_lock_mapping':
>> include/linux/rwsem.h:166:46: error: 'struct percpu_rw_semaphore' has no
>> member named 'dep_map'
typecheck(struct lockdep_map *, &(nest_lock)->dep_map); \
^
include/linux/typecheck.h:10:9: note: in definition of macro 'typecheck'
typeof(x) __dummy2; \
^
include/linux/mm_types.h:562:2: note: in expansion of macro
'down_write_nest_lock'
down_write_nest_lock(sem, &(nest_mm)->mmap_sem);
^~~~~~~~~~~~~~~~~~~~
mm/mmap.c:3317:3: note: in expansion of macro 'down_write_nest_lock_mmap_sem'
down_write_nest_lock_mmap_sem(&mapping->i_mmap_rwsem, mm);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/typecheck.h:11:18: warning: comparison of distinct pointer
types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/rwsem.h:166:2: note: in expansion of macro 'typecheck'
typecheck(struct lockdep_map *, &(nest_lock)->dep_map); \
^~~~~~~~~
include/linux/mm_types.h:562:2: note: in expansion of macro
'down_write_nest_lock'
down_write_nest_lock(sem, &(nest_mm)->mmap_sem);
^~~~~~~~~~~~~~~~~~~~
mm/mmap.c:3317:3: note: in expansion of macro 'down_write_nest_lock_mmap_sem'
down_write_nest_lock_mmap_sem(&mapping->i_mmap_rwsem, mm);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/notifier.h:14:0,
from include/linux/memory_hotplug.h:6,
from include/linux/mmzone.h:757,
from include/linux/gfp.h:5,
from include/linux/slab.h:14,
from mm/mmap.c:12:
include/linux/rwsem.h:167:41: error: 'struct percpu_rw_semaphore' has no
member named 'dep_map'
_down_write_nest_lock(sem, &(nest_lock)->dep_map); \
^
include/linux/mm_types.h:562:2: note: in expansion of macro
'down_write_nest_lock'
down_write_nest_lock(sem, &(nest_mm)->mmap_sem);
^~~~~~~~~~~~~~~~~~~~
mm/mmap.c:3317:3: note: in expansion of macro 'down_write_nest_lock_mmap_sem'
down_write_nest_lock_mmap_sem(&mapping->i_mmap_rwsem, mm);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +166 include/linux/rwsem.h
4ea2176d Ingo Molnar 2006-07-03 160 extern void down_write_nested(struct
rw_semaphore *sem, int subclass);
887bddfa Al Viro 2016-05-26 161 extern int
down_write_killable_nested(struct rw_semaphore *sem, int subclass);
1b963c81 Jiri Kosina 2013-01-11 162 extern void _down_write_nest_lock(struct
rw_semaphore *sem, struct lockdep_map *nest_lock);
1b963c81 Jiri Kosina 2013-01-11 163
1b963c81 Jiri Kosina 2013-01-11 164 # define down_write_nest_lock(sem,
nest_lock) \
1b963c81 Jiri Kosina 2013-01-11 165 do {
\
1b963c81 Jiri Kosina 2013-01-11 @166 typecheck(struct lockdep_map *,
&(nest_lock)->dep_map); \
1b963c81 Jiri Kosina 2013-01-11 167 _down_write_nest_lock(sem,
&(nest_lock)->dep_map); \
1b963c81 Jiri Kosina 2013-01-11 168 } while (0);
1b963c81 Jiri Kosina 2013-01-11 169
:::::: The code at line 166 was first introduced by commit
:::::: 1b963c81b14509e330e0fe3218b645ece2738dc5 lockdep, rwsem: provide
down_write_nest_lock()
:::::: TO: Jiri Kosina <jkos...@suse.cz>
:::::: CC: Linus Torvalds <torva...@linux-foundation.org>
---
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