Re: [PATCH] ocfs2/cluster: make config_item_type const

From: kbuild test robot
Date: Sat Oct 14 2017 - 07:51:33 EST

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In reply to: Bhumika Goyal: "[PATCH] ocfs2/cluster: make config_item_type const"
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Hi Bhumika,

[auto build test WARNING on linus/master]
[also build test WARNING on v4.14-rc4 next-20171013]
[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/Bhumika-Goyal/ocfs2-cluster-make-config_item_type-const/20171014-185701
config: i386-randconfig-x008-201741 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All warnings (new ones prefixed by >>):

fs/ocfs2//cluster/heartbeat.c: In function 'o2hb_heartbeat_group_make_item':
>> fs/ocfs2//cluster/heartbeat.c:2143:50: warning: passing argument 3 of 'config_item_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
config_item_init_type_name(&reg->hr_item, name, &o2hb_region_type);
^
In file included from fs/ocfs2//cluster/heartbeat.c:32:0:
include/linux/configfs.h:73:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *'
extern void config_item_init_type_name(struct config_item *item,
^~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ocfs2//cluster/heartbeat.c: In function 'o2hb_alloc_hb_set':
>> fs/ocfs2//cluster/heartbeat.c:2331:9: warning: passing argument 3 of 'config_group_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
&o2hb_heartbeat_group_type);
^
In file included from fs/ocfs2//cluster/heartbeat.c:32:0:
include/linux/configfs.h:102:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *'
extern void config_group_init_type_name(struct config_group *group,
^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/linkage.h:4:0,
from include/linux/kernel.h:6,
from fs/ocfs2//cluster/heartbeat.c:22:
fs/ocfs2//cluster/heartbeat.c: At top level:
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'strcpy' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:421:2: note: in expansion of macro 'if'
if (p_size == (size_t)-1 && q_size == (size_t)-1)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:411:2: note: in expansion of macro 'if'
if (p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:409:2: note: in expansion of macro 'if'
if (__builtin_constant_p(size) && p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:400:2: note: in expansion of macro 'if'
if (p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:398:2: note: in expansion of macro 'if'
if (__builtin_constant_p(size) && p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:389:2: note: in expansion of macro 'if'
if (p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:387:2: note: in expansion of macro 'if'
if (__builtin_constant_p(size) && p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:379:2: note: in expansion of macro 'if'
if (p_size < size || q_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:376:3: note: in expansion of macro 'if'
if (q_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:374:3: note: in expansion of macro 'if'
if (p_size < size)
^~
--
fs/ocfs2//cluster/nodemanager.c: In function 'o2nm_node_group_make_item':
>> fs/ocfs2//cluster/nodemanager.c:573:51: warning: passing argument 3 of 'config_item_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
config_item_init_type_name(&node->nd_item, name, &o2nm_node_type);
^
In file included from fs/ocfs2//cluster/nodemanager.c:25:0:
include/linux/configfs.h:73:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *'
extern void config_item_init_type_name(struct config_item *item,
^~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ocfs2//cluster/nodemanager.c: In function 'o2nm_cluster_group_make_group':
>> fs/ocfs2//cluster/nodemanager.c:681:9: warning: passing argument 3 of 'config_group_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
&o2nm_cluster_type);
^
In file included from fs/ocfs2//cluster/nodemanager.c:25:0:
include/linux/configfs.h:102:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *'
extern void config_group_init_type_name(struct config_group *group,
^~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ocfs2//cluster/nodemanager.c:685:9: warning: passing argument 3 of 'config_group_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
&o2nm_node_group_type);
^
In file included from fs/ocfs2//cluster/nodemanager.c:25:0:
include/linux/configfs.h:102:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *'
extern void config_group_init_type_name(struct config_group *group,
^~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ocfs2//cluster/nodemanager.c: In function 'o2nm_depend_item':
>> fs/ocfs2//cluster/nodemanager.c:743:30: warning: passing argument 1 of 'configfs_depend_item' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
return configfs_depend_item(&o2nm_cluster_group.cs_subsys, item);
^
In file included from fs/ocfs2//cluster/nodemanager.c:25:0:
include/linux/configfs.h:269:5: note: expected 'struct configfs_subsystem *' but argument is of type 'const struct configfs_subsystem *'
int configfs_depend_item(struct configfs_subsystem *subsys,
^~~~~~~~~~~~~~~~~~~~
fs/ocfs2//cluster/nodemanager.c: In function 'exit_o2nm':
>> fs/ocfs2//cluster/nodemanager.c:785:32: warning: passing argument 1 of 'configfs_unregister_subsystem' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys);
^
In file included from fs/ocfs2//cluster/nodemanager.c:25:0:
include/linux/configfs.h:253:6: note: expected 'struct configfs_subsystem *' but argument is of type 'const struct configfs_subsystem *'
void configfs_unregister_subsystem(struct configfs_subsystem *subsys);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ocfs2//cluster/nodemanager.c: In function 'init_o2nm':
>> fs/ocfs2//cluster/nodemanager.c:808:20: warning: passing argument 1 of 'config_group_init' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
config_group_init(&o2nm_cluster_group.cs_subsys.su_group);
^
In file included from fs/ocfs2//cluster/nodemanager.c:25:0:
include/linux/configfs.h:101:13: note: expected 'struct config_group *' but argument is of type 'const struct config_group *'
extern void config_group_init(struct config_group *group);
^~~~~~~~~~~~~~~~~
In file included from include/linux/notifier.h:13:0,
from include/linux/memory_hotplug.h:6,
from include/linux/mmzone.h:779,
from include/linux/gfp.h:5,
from include/linux/slab.h:14,
from fs/ocfs2//cluster/nodemanager.c:22:
>> include/linux/mutex.h:113:15: warning: passing argument 1 of '__mutex_init' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
__mutex_init((mutex), #mutex, &__key); \
^
>> fs/ocfs2//cluster/nodemanager.c:809:2: note: in expansion of macro 'mutex_init'
mutex_init(&o2nm_cluster_group.cs_subsys.su_mutex);
^~~~~~~~~~
include/linux/mutex.h:133:13: note: expected 'struct mutex *' but argument is of type 'const struct mutex *'
extern void __mutex_init(struct mutex *lock, const char *name,
^~~~~~~~~~~~
>> fs/ocfs2//cluster/nodemanager.c:810:36: warning: passing argument 1 of 'configfs_register_subsystem' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
ret = configfs_register_subsystem(&o2nm_cluster_group.cs_subsys);
^
In file included from fs/ocfs2//cluster/nodemanager.c:25:0:
include/linux/configfs.h:252:5: note: expected 'struct configfs_subsystem *' but argument is of type 'const struct configfs_subsystem *'
int configfs_register_subsystem(struct configfs_subsystem *subsys);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ocfs2//cluster/nodemanager.c:820:32: warning: passing argument 1 of 'configfs_unregister_subsystem' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys);
^
In file included from fs/ocfs2//cluster/nodemanager.c:25:0:
include/linux/configfs.h:253:6: note: expected 'struct configfs_subsystem *' but argument is of type 'const struct configfs_subsystem *'
void configfs_unregister_subsystem(struct configfs_subsystem *subsys);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/asm-generic/bug.h:4:0,
from arch/x86/include/asm/bug.h:81,
from include/linux/bug.h:4,
from include/linux/mmdebug.h:4,
from include/linux/gfp.h:4,
from include/linux/slab.h:14,
from fs/ocfs2//cluster/nodemanager.c:22:
fs/ocfs2//cluster/nodemanager.c: At top level:
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'strcpy' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:421:2: note: in expansion of macro 'if'
if (p_size == (size_t)-1 && q_size == (size_t)-1)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:411:2: note: in expansion of macro 'if'
if (p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:409:2: note: in expansion of macro 'if'
if (__builtin_constant_p(size) && p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:400:2: note: in expansion of macro 'if'
if (p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:398:2: note: in expansion of macro 'if'
if (__builtin_constant_p(size) && p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:389:2: note: in expansion of macro 'if'
if (p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:387:2: note: in expansion of macro 'if'
if (__builtin_constant_p(size) && p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:379:2: note: in expansion of macro 'if'
if (p_size < size || q_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:376:3: note: in expansion of macro 'if'
--
fs/ocfs2/cluster/nodemanager.c: In function 'o2nm_node_group_make_item':
fs/ocfs2/cluster/nodemanager.c:573:51: warning: passing argument 3 of 'config_item_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
config_item_init_type_name(&node->nd_item, name, &o2nm_node_type);
^
In file included from fs/ocfs2/cluster/nodemanager.c:25:0:
include/linux/configfs.h:73:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *'
extern void config_item_init_type_name(struct config_item *item,
^~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ocfs2/cluster/nodemanager.c: In function 'o2nm_cluster_group_make_group':
fs/ocfs2/cluster/nodemanager.c:681:9: warning: passing argument 3 of 'config_group_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
&o2nm_cluster_type);
^
In file included from fs/ocfs2/cluster/nodemanager.c:25:0:
include/linux/configfs.h:102:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *'
extern void config_group_init_type_name(struct config_group *group,
^~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ocfs2/cluster/nodemanager.c:685:9: warning: passing argument 3 of 'config_group_init_type_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
&o2nm_node_group_type);
^
In file included from fs/ocfs2/cluster/nodemanager.c:25:0:
include/linux/configfs.h:102:13: note: expected 'struct config_item_type *' but argument is of type 'const struct config_item_type *'
extern void config_group_init_type_name(struct config_group *group,
^~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ocfs2/cluster/nodemanager.c: In function 'o2nm_depend_item':
fs/ocfs2/cluster/nodemanager.c:743:30: warning: passing argument 1 of 'configfs_depend_item' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
return configfs_depend_item(&o2nm_cluster_group.cs_subsys, item);
^
In file included from fs/ocfs2/cluster/nodemanager.c:25:0:
include/linux/configfs.h:269:5: note: expected 'struct configfs_subsystem *' but argument is of type 'const struct configfs_subsystem *'
int configfs_depend_item(struct configfs_subsystem *subsys,
^~~~~~~~~~~~~~~~~~~~
fs/ocfs2/cluster/nodemanager.c: In function 'exit_o2nm':
fs/ocfs2/cluster/nodemanager.c:785:32: warning: passing argument 1 of 'configfs_unregister_subsystem' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys);
^
In file included from fs/ocfs2/cluster/nodemanager.c:25:0:
include/linux/configfs.h:253:6: note: expected 'struct configfs_subsystem *' but argument is of type 'const struct configfs_subsystem *'
void configfs_unregister_subsystem(struct configfs_subsystem *subsys);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ocfs2/cluster/nodemanager.c: In function 'init_o2nm':
fs/ocfs2/cluster/nodemanager.c:808:20: warning: passing argument 1 of 'config_group_init' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
config_group_init(&o2nm_cluster_group.cs_subsys.su_group);
^
In file included from fs/ocfs2/cluster/nodemanager.c:25:0:
include/linux/configfs.h:101:13: note: expected 'struct config_group *' but argument is of type 'const struct config_group *'
extern void config_group_init(struct config_group *group);
^~~~~~~~~~~~~~~~~
In file included from include/linux/notifier.h:13:0,
from include/linux/memory_hotplug.h:6,
from include/linux/mmzone.h:779,
from include/linux/gfp.h:5,
from include/linux/slab.h:14,
from fs/ocfs2/cluster/nodemanager.c:22:
>> include/linux/mutex.h:113:15: warning: passing argument 1 of '__mutex_init' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
__mutex_init((mutex), #mutex, &__key); \
^
fs/ocfs2/cluster/nodemanager.c:809:2: note: in expansion of macro 'mutex_init'
mutex_init(&o2nm_cluster_group.cs_subsys.su_mutex);
^~~~~~~~~~
include/linux/mutex.h:133:13: note: expected 'struct mutex *' but argument is of type 'const struct mutex *'
extern void __mutex_init(struct mutex *lock, const char *name,
^~~~~~~~~~~~
fs/ocfs2/cluster/nodemanager.c:810:36: warning: passing argument 1 of 'configfs_register_subsystem' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
ret = configfs_register_subsystem(&o2nm_cluster_group.cs_subsys);
^
In file included from fs/ocfs2/cluster/nodemanager.c:25:0:
include/linux/configfs.h:252:5: note: expected 'struct configfs_subsystem *' but argument is of type 'const struct configfs_subsystem *'
int configfs_register_subsystem(struct configfs_subsystem *subsys);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ocfs2/cluster/nodemanager.c:820:32: warning: passing argument 1 of 'configfs_unregister_subsystem' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
configfs_unregister_subsystem(&o2nm_cluster_group.cs_subsys);
^
In file included from fs/ocfs2/cluster/nodemanager.c:25:0:
include/linux/configfs.h:253:6: note: expected 'struct configfs_subsystem *' but argument is of type 'const struct configfs_subsystem *'
void configfs_unregister_subsystem(struct configfs_subsystem *subsys);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/asm-generic/bug.h:4:0,
from arch/x86/include/asm/bug.h:81,
from include/linux/bug.h:4,
from include/linux/mmdebug.h:4,
from include/linux/gfp.h:4,
from include/linux/slab.h:14,
from fs/ocfs2/cluster/nodemanager.c:22:
fs/ocfs2/cluster/nodemanager.c: At top level:
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'strcpy' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:421:2: note: in expansion of macro 'if'
if (p_size == (size_t)-1 && q_size == (size_t)-1)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:411:2: note: in expansion of macro 'if'
if (p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'kmemdup' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:409:2: note: in expansion of macro 'if'
if (__builtin_constant_p(size) && p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:400:2: note: in expansion of macro 'if'
if (p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr_inv' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:398:2: note: in expansion of macro 'if'
if (__builtin_constant_p(size) && p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:389:2: note: in expansion of macro 'if'
if (p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memchr' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:387:2: note: in expansion of macro 'if'
if (__builtin_constant_p(size) && p_size < size)
^~
include/linux/compiler.h:162:4: warning: '______f' is static but declared in inline function 'memcmp' which is not static
______f = { \
^
include/linux/compiler.h:154:23: note: in expansion of macro '__trace_if'
#define if(cond, ...) __trace_if( (cond , ## __VA_ARGS__) )
^~~~~~~~~~
include/linux/string.h:379:2: note: in expansion of macro 'if'

vim +2143 fs/ocfs2//cluster/heartbeat.c

1f28530537 Sunil Mushran 2010-10-06 2112
f89ab8619e Joel Becker 2008-07-17 2113 static struct config_item *o2hb_heartbeat_group_make_item(struct config_group *group,
f89ab8619e Joel Becker 2008-07-17 2114 const char *name)
a7f6a5fb4b Mark Fasheh 2005-12-15 2115 {
a7f6a5fb4b Mark Fasheh 2005-12-15 2116 struct o2hb_region *reg = NULL;
1f28530537 Sunil Mushran 2010-10-06 2117 int ret;
a7f6a5fb4b Mark Fasheh 2005-12-15 2118
cd86128088 Robert P. J. Day 2006-12-13 2119 reg = kzalloc(sizeof(struct o2hb_region), GFP_KERNEL);
f89ab8619e Joel Becker 2008-07-17 2120 if (reg == NULL)
a6795e9ebb Joel Becker 2008-07-17 2121 return ERR_PTR(-ENOMEM);
a7f6a5fb4b Mark Fasheh 2005-12-15 2122
1cf257f511 Jiri Slaby 2010-11-06 2123 if (strlen(name) > O2HB_MAX_REGION_NAME_LEN) {
1cf257f511 Jiri Slaby 2010-11-06 2124 ret = -ENAMETOOLONG;
1cf257f511 Jiri Slaby 2010-11-06 2125 goto free;
1cf257f511 Jiri Slaby 2010-11-06 2126 }
b3c85c4cdf Sunil Mushran 2010-10-07 2127
a7f6a5fb4b Mark Fasheh 2005-12-15 2128 spin_lock(&o2hb_live_lock);
536f0741f3 Sunil Mushran 2010-10-07 2129 reg->hr_region_num = 0;
536f0741f3 Sunil Mushran 2010-10-07 2130 if (o2hb_global_heartbeat_active()) {
536f0741f3 Sunil Mushran 2010-10-07 2131 reg->hr_region_num = find_first_zero_bit(o2hb_region_bitmap,
536f0741f3 Sunil Mushran 2010-10-07 2132 O2NM_MAX_REGIONS);
536f0741f3 Sunil Mushran 2010-10-07 2133 if (reg->hr_region_num >= O2NM_MAX_REGIONS) {
536f0741f3 Sunil Mushran 2010-10-07 2134 spin_unlock(&o2hb_live_lock);
1cf257f511 Jiri Slaby 2010-11-06 2135 ret = -EFBIG;
1cf257f511 Jiri Slaby 2010-11-06 2136 goto free;
536f0741f3 Sunil Mushran 2010-10-07 2137 }
536f0741f3 Sunil Mushran 2010-10-07 2138 set_bit(reg->hr_region_num, o2hb_region_bitmap);
536f0741f3 Sunil Mushran 2010-10-07 2139 }
a7f6a5fb4b Mark Fasheh 2005-12-15 2140 list_add_tail(&reg->hr_all_item, &o2hb_all_regions);
a7f6a5fb4b Mark Fasheh 2005-12-15 2141 spin_unlock(&o2hb_live_lock);
a7f6a5fb4b Mark Fasheh 2005-12-15 2142
536f0741f3 Sunil Mushran 2010-10-07 @2143 config_item_init_type_name(&reg->hr_item, name, &o2hb_region_type);
536f0741f3 Sunil Mushran 2010-10-07 2144
34069b886f Junxiao Bi 2016-05-27 2145 /* this is the same way to generate msg key as dlm, for local heartbeat,
34069b886f Junxiao Bi 2016-05-27 2146 * name is also the same, so make initial crc value different to avoid
34069b886f Junxiao Bi 2016-05-27 2147 * message key conflict.
34069b886f Junxiao Bi 2016-05-27 2148 */
34069b886f Junxiao Bi 2016-05-27 2149 reg->hr_key = crc32_le(reg->hr_region_num + O2NM_MAX_REGIONS,
34069b886f Junxiao Bi 2016-05-27 2150 name, strlen(name));
34069b886f Junxiao Bi 2016-05-27 2151 INIT_LIST_HEAD(&reg->hr_handler_list);
34069b886f Junxiao Bi 2016-05-27 2152 ret = o2net_register_handler(O2HB_NEGO_TIMEOUT_MSG, reg->hr_key,
34069b886f Junxiao Bi 2016-05-27 2153 sizeof(struct o2hb_nego_msg),
34069b886f Junxiao Bi 2016-05-27 2154 o2hb_nego_timeout_handler,
34069b886f Junxiao Bi 2016-05-27 2155 reg, NULL, &reg->hr_handler_list);
34069b886f Junxiao Bi 2016-05-27 2156 if (ret)
34069b886f Junxiao Bi 2016-05-27 2157 goto free;
34069b886f Junxiao Bi 2016-05-27 2158
e76f8237a2 Junxiao Bi 2016-05-27 2159 ret = o2net_register_handler(O2HB_NEGO_APPROVE_MSG, reg->hr_key,
e76f8237a2 Junxiao Bi 2016-05-27 2160 sizeof(struct o2hb_nego_msg),
e76f8237a2 Junxiao Bi 2016-05-27 2161 o2hb_nego_approve_handler,
e76f8237a2 Junxiao Bi 2016-05-27 2162 reg, NULL, &reg->hr_handler_list);
e76f8237a2 Junxiao Bi 2016-05-27 2163 if (ret)
e76f8237a2 Junxiao Bi 2016-05-27 2164 goto unregister_handler;
e76f8237a2 Junxiao Bi 2016-05-27 2165
1f28530537 Sunil Mushran 2010-10-06 2166 ret = o2hb_debug_region_init(reg, o2hb_debug_dir);
1f28530537 Sunil Mushran 2010-10-06 2167 if (ret) {
1f28530537 Sunil Mushran 2010-10-06 2168 config_item_put(&reg->hr_item);
34069b886f Junxiao Bi 2016-05-27 2169 goto unregister_handler;
1f28530537 Sunil Mushran 2010-10-06 2170 }
1f28530537 Sunil Mushran 2010-10-06 2171
a6795e9ebb Joel Becker 2008-07-17 2172 return &reg->hr_item;
34069b886f Junxiao Bi 2016-05-27 2173
34069b886f Junxiao Bi 2016-05-27 2174 unregister_handler:
34069b886f Junxiao Bi 2016-05-27 2175 o2net_unregister_handler_list(&reg->hr_handler_list);
1cf257f511 Jiri Slaby 2010-11-06 2176 free:
1cf257f511 Jiri Slaby 2010-11-06 2177 kfree(reg);
1cf257f511 Jiri Slaby 2010-11-06 2178 return ERR_PTR(ret);
a7f6a5fb4b Mark Fasheh 2005-12-15 2179 }
a7f6a5fb4b Mark Fasheh 2005-12-15 2180
a7f6a5fb4b Mark Fasheh 2005-12-15 2181 static void o2hb_heartbeat_group_drop_item(struct config_group *group,
a7f6a5fb4b Mark Fasheh 2005-12-15 2182 struct config_item *item)
a7f6a5fb4b Mark Fasheh 2005-12-15 2183 {
e6c352dbc0 Joel Becker 2007-02-03 2184 struct task_struct *hb_task;
a7f6a5fb4b Mark Fasheh 2005-12-15 2185 struct o2hb_region *reg = to_o2hb_region(item);
58a3158a5d Sunil Mushran 2010-12-14 2186 int quorum_region = 0;
a7f6a5fb4b Mark Fasheh 2005-12-15 2187
a7f6a5fb4b Mark Fasheh 2005-12-15 2188 /* stop the thread when the user removes the region dir */
e6c352dbc0 Joel Becker 2007-02-03 2189 spin_lock(&o2hb_live_lock);
e6c352dbc0 Joel Becker 2007-02-03 2190 hb_task = reg->hr_task;
a7f6a5fb4b Mark Fasheh 2005-12-15 2191 reg->hr_task = NULL;
58a3158a5d Sunil Mushran 2010-12-14 2192 reg->hr_item_dropped = 1;
e6c352dbc0 Joel Becker 2007-02-03 2193 spin_unlock(&o2hb_live_lock);
e6c352dbc0 Joel Becker 2007-02-03 2194
e6c352dbc0 Joel Becker 2007-02-03 2195 if (hb_task)
e6c352dbc0 Joel Becker 2007-02-03 2196 kthread_stop(hb_task);
a7f6a5fb4b Mark Fasheh 2005-12-15 2197
d2eece3766 Sunil Mushran 2011-07-24 2198 if (o2hb_global_heartbeat_active()) {
d2eece3766 Sunil Mushran 2011-07-24 2199 spin_lock(&o2hb_live_lock);
d2eece3766 Sunil Mushran 2011-07-24 2200 clear_bit(reg->hr_region_num, o2hb_region_bitmap);
d2eece3766 Sunil Mushran 2011-07-24 2201 clear_bit(reg->hr_region_num, o2hb_live_region_bitmap);
d2eece3766 Sunil Mushran 2011-07-24 2202 if (test_bit(reg->hr_region_num, o2hb_quorum_region_bitmap))
d2eece3766 Sunil Mushran 2011-07-24 2203 quorum_region = 1;
d2eece3766 Sunil Mushran 2011-07-24 2204 clear_bit(reg->hr_region_num, o2hb_quorum_region_bitmap);
d2eece3766 Sunil Mushran 2011-07-24 2205 spin_unlock(&o2hb_live_lock);
d2eece3766 Sunil Mushran 2011-07-24 2206 printk(KERN_NOTICE "o2hb: Heartbeat %s on region %s (%s)\n",
d2eece3766 Sunil Mushran 2011-07-24 2207 ((atomic_read(&reg->hr_steady_iterations) == 0) ?
d2eece3766 Sunil Mushran 2011-07-24 2208 "stopped" : "start aborted"), config_item_name(item),
d2eece3766 Sunil Mushran 2011-07-24 2209 reg->hr_dev_name);
d2eece3766 Sunil Mushran 2011-07-24 2210 }
d2eece3766 Sunil Mushran 2011-07-24 2211
e6df3a663a Joel Becker 2007-02-06 2212 /*
e6df3a663a Joel Becker 2007-02-06 2213 * If we're racing a dev_write(), we need to wake them. They will
e6df3a663a Joel Becker 2007-02-06 2214 * check reg->hr_task
e6df3a663a Joel Becker 2007-02-06 2215 */
e6df3a663a Joel Becker 2007-02-06 2216 if (atomic_read(&reg->hr_steady_iterations) != 0) {
d2eece3766 Sunil Mushran 2011-07-24 2217 reg->hr_aborted_start = 1;
e6df3a663a Joel Becker 2007-02-06 2218 atomic_set(&reg->hr_steady_iterations, 0);
e6df3a663a Joel Becker 2007-02-06 2219 wake_up(&o2hb_steady_queue);
e6df3a663a Joel Becker 2007-02-06 2220 }
e6df3a663a Joel Becker 2007-02-06 2221
a7f6a5fb4b Mark Fasheh 2005-12-15 2222 config_item_put(item);
58a3158a5d Sunil Mushran 2010-12-14 2223
58a3158a5d Sunil Mushran 2010-12-14 2224 if (!o2hb_global_heartbeat_active() || !quorum_region)
58a3158a5d Sunil Mushran 2010-12-14 2225 return;
58a3158a5d Sunil Mushran 2010-12-14 2226
58a3158a5d Sunil Mushran 2010-12-14 2227 /*
58a3158a5d Sunil Mushran 2010-12-14 2228 * If global heartbeat active and there are dependent users,
58a3158a5d Sunil Mushran 2010-12-14 2229 * pin all regions if quorum region count <= CUT_OFF
58a3158a5d Sunil Mushran 2010-12-14 2230 */
58a3158a5d Sunil Mushran 2010-12-14 2231 spin_lock(&o2hb_live_lock);
58a3158a5d Sunil Mushran 2010-12-14 2232
58a3158a5d Sunil Mushran 2010-12-14 2233 if (!o2hb_dependent_users)
58a3158a5d Sunil Mushran 2010-12-14 2234 goto unlock;
58a3158a5d Sunil Mushran 2010-12-14 2235
a8f70de37b Akinobu Mita 2013-11-12 2236 if (bitmap_weight(o2hb_quorum_region_bitmap,
58a3158a5d Sunil Mushran 2010-12-14 2237 O2NM_MAX_REGIONS) <= O2HB_PIN_CUT_OFF)
58a3158a5d Sunil Mushran 2010-12-14 2238 o2hb_region_pin(NULL);
58a3158a5d Sunil Mushran 2010-12-14 2239
58a3158a5d Sunil Mushran 2010-12-14 2240 unlock:
58a3158a5d Sunil Mushran 2010-12-14 2241 spin_unlock(&o2hb_live_lock);
a7f6a5fb4b Mark Fasheh 2005-12-15 2242 }
a7f6a5fb4b Mark Fasheh 2005-12-15 2243
33496c3c3d Junxiao Bi 2017-05-03 2244 static ssize_t o2hb_heartbeat_group_dead_threshold_show(struct config_item *item,
a7f6a5fb4b Mark Fasheh 2005-12-15 2245 char *page)
a7f6a5fb4b Mark Fasheh 2005-12-15 2246 {
a7f6a5fb4b Mark Fasheh 2005-12-15 2247 return sprintf(page, "%u\n", o2hb_dead_threshold);
a7f6a5fb4b Mark Fasheh 2005-12-15 2248 }
a7f6a5fb4b Mark Fasheh 2005-12-15 2249
33496c3c3d Junxiao Bi 2017-05-03 2250 static ssize_t o2hb_heartbeat_group_dead_threshold_store(struct config_item *item,
45b997737a Christoph Hellwig 2015-10-03 2251 const char *page, size_t count)
a7f6a5fb4b Mark Fasheh 2005-12-15 2252 {
a7f6a5fb4b Mark Fasheh 2005-12-15 2253 unsigned long tmp;
a7f6a5fb4b Mark Fasheh 2005-12-15 2254 char *p = (char *)page;
a7f6a5fb4b Mark Fasheh 2005-12-15 2255
a7f6a5fb4b Mark Fasheh 2005-12-15 2256 tmp = simple_strtoul(p, &p, 10);
a7f6a5fb4b Mark Fasheh 2005-12-15 2257 if (!p || (*p && (*p != '\n')))
a7f6a5fb4b Mark Fasheh 2005-12-15 2258 return -EINVAL;
a7f6a5fb4b Mark Fasheh 2005-12-15 2259
a7f6a5fb4b Mark Fasheh 2005-12-15 2260 /* this will validate ranges for us. */
a7f6a5fb4b Mark Fasheh 2005-12-15 2261 o2hb_dead_threshold_set((unsigned int) tmp);
a7f6a5fb4b Mark Fasheh 2005-12-15 2262
a7f6a5fb4b Mark Fasheh 2005-12-15 2263 return count;
a7f6a5fb4b Mark Fasheh 2005-12-15 2264 }
a7f6a5fb4b Mark Fasheh 2005-12-15 2265
45b997737a Christoph Hellwig 2015-10-03 2266 static ssize_t o2hb_heartbeat_group_mode_show(struct config_item *item,
54b5187b5a Sunil Mushran 2010-10-07 2267 char *page)
54b5187b5a Sunil Mushran 2010-10-07 2268 {
54b5187b5a Sunil Mushran 2010-10-07 2269 return sprintf(page, "%s\n",
54b5187b5a Sunil Mushran 2010-10-07 2270 o2hb_heartbeat_mode_desc[o2hb_heartbeat_mode]);
54b5187b5a Sunil Mushran 2010-10-07 2271 }
54b5187b5a Sunil Mushran 2010-10-07 2272
45b997737a Christoph Hellwig 2015-10-03 2273 static ssize_t o2hb_heartbeat_group_mode_store(struct config_item *item,
54b5187b5a Sunil Mushran 2010-10-07 2274 const char *page, size_t count)
54b5187b5a Sunil Mushran 2010-10-07 2275 {
54b5187b5a Sunil Mushran 2010-10-07 2276 unsigned int i;
54b5187b5a Sunil Mushran 2010-10-07 2277 int ret;
54b5187b5a Sunil Mushran 2010-10-07 2278 size_t len;
54b5187b5a Sunil Mushran 2010-10-07 2279
54b5187b5a Sunil Mushran 2010-10-07 2280 len = (page[count - 1] == '\n') ? count - 1 : count;
54b5187b5a Sunil Mushran 2010-10-07 2281 if (!len)
54b5187b5a Sunil Mushran 2010-10-07 2282 return -EINVAL;
54b5187b5a Sunil Mushran 2010-10-07 2283
54b5187b5a Sunil Mushran 2010-10-07 2284 for (i = 0; i < O2HB_HEARTBEAT_NUM_MODES; ++i) {
2bd63329cb Rasmus Villemoes 2014-10-13 2285 if (strncasecmp(page, o2hb_heartbeat_mode_desc[i], len))
54b5187b5a Sunil Mushran 2010-10-07 2286 continue;
54b5187b5a Sunil Mushran 2010-10-07 2287
70f651edb7 Jie Liu 2013-07-03 2288 ret = o2hb_global_heartbeat_mode_set(i);
54b5187b5a Sunil Mushran 2010-10-07 2289 if (!ret)
18c50cb0d3 Sunil Mushran 2010-10-06 2290 printk(KERN_NOTICE "o2hb: Heartbeat mode set to %s\n",
54b5187b5a Sunil Mushran 2010-10-07 2291 o2hb_heartbeat_mode_desc[i]);
54b5187b5a Sunil Mushran 2010-10-07 2292 return count;
54b5187b5a Sunil Mushran 2010-10-07 2293 }
54b5187b5a Sunil Mushran 2010-10-07 2294
54b5187b5a Sunil Mushran 2010-10-07 2295 return -EINVAL;
54b5187b5a Sunil Mushran 2010-10-07 2296
54b5187b5a Sunil Mushran 2010-10-07 2297 }
54b5187b5a Sunil Mushran 2010-10-07 2298
33496c3c3d Junxiao Bi 2017-05-03 2299 CONFIGFS_ATTR(o2hb_heartbeat_group_, dead_threshold);
45b997737a Christoph Hellwig 2015-10-03 2300 CONFIGFS_ATTR(o2hb_heartbeat_group_, mode);
54b5187b5a Sunil Mushran 2010-10-07 2301
a7f6a5fb4b Mark Fasheh 2005-12-15 2302 static struct configfs_attribute *o2hb_heartbeat_group_attrs[] = {
33496c3c3d Junxiao Bi 2017-05-03 2303 &o2hb_heartbeat_group_attr_dead_threshold,
45b997737a Christoph Hellwig 2015-10-03 2304 &o2hb_heartbeat_group_attr_mode,
a7f6a5fb4b Mark Fasheh 2005-12-15 2305 NULL,
a7f6a5fb4b Mark Fasheh 2005-12-15 2306 };
a7f6a5fb4b Mark Fasheh 2005-12-15 2307
a7f6a5fb4b Mark Fasheh 2005-12-15 2308 static struct configfs_group_operations o2hb_heartbeat_group_group_ops = {
a7f6a5fb4b Mark Fasheh 2005-12-15 2309 .make_item = o2hb_heartbeat_group_make_item,
a7f6a5fb4b Mark Fasheh 2005-12-15 2310 .drop_item = o2hb_heartbeat_group_drop_item,
a7f6a5fb4b Mark Fasheh 2005-12-15 2311 };
a7f6a5fb4b Mark Fasheh 2005-12-15 2312
6c56d97a81 Bhumika Goyal 2017-10-12 2313 static const struct config_item_type o2hb_heartbeat_group_type = {
a7f6a5fb4b Mark Fasheh 2005-12-15 2314 .ct_group_ops = &o2hb_heartbeat_group_group_ops,
a7f6a5fb4b Mark Fasheh 2005-12-15 2315 .ct_attrs = o2hb_heartbeat_group_attrs,
a7f6a5fb4b Mark Fasheh 2005-12-15 2316 .ct_owner = THIS_MODULE,
a7f6a5fb4b Mark Fasheh 2005-12-15 2317 };
a7f6a5fb4b Mark Fasheh 2005-12-15 2318
a7f6a5fb4b Mark Fasheh 2005-12-15 2319 /* this is just here to avoid touching group in heartbeat.h which the
a7f6a5fb4b Mark Fasheh 2005-12-15 2320 * entire damn world #includes */
a7f6a5fb4b Mark Fasheh 2005-12-15 2321 struct config_group *o2hb_alloc_hb_set(void)
a7f6a5fb4b Mark Fasheh 2005-12-15 2322 {
a7f6a5fb4b Mark Fasheh 2005-12-15 2323 struct o2hb_heartbeat_group *hs = NULL;
a7f6a5fb4b Mark Fasheh 2005-12-15 2324 struct config_group *ret = NULL;
a7f6a5fb4b Mark Fasheh 2005-12-15 2325
cd86128088 Robert P. J. Day 2006-12-13 2326 hs = kzalloc(sizeof(struct o2hb_heartbeat_group), GFP_KERNEL);
a7f6a5fb4b Mark Fasheh 2005-12-15 2327 if (hs == NULL)
a7f6a5fb4b Mark Fasheh 2005-12-15 2328 goto out;
a7f6a5fb4b Mark Fasheh 2005-12-15 2329
a7f6a5fb4b Mark Fasheh 2005-12-15 2330 config_group_init_type_name(&hs->hs_group, "heartbeat",
a7f6a5fb4b Mark Fasheh 2005-12-15 @2331 &o2hb_heartbeat_group_type);
a7f6a5fb4b Mark Fasheh 2005-12-15 2332
a7f6a5fb4b Mark Fasheh 2005-12-15 2333 ret = &hs->hs_group;
a7f6a5fb4b Mark Fasheh 2005-12-15 2334 out:
a7f6a5fb4b Mark Fasheh 2005-12-15 2335 if (ret == NULL)
a7f6a5fb4b Mark Fasheh 2005-12-15 2336 kfree(hs);
a7f6a5fb4b Mark Fasheh 2005-12-15 2337 return ret;
a7f6a5fb4b Mark Fasheh 2005-12-15 2338 }
a7f6a5fb4b Mark Fasheh 2005-12-15 2339

:::::: The code at line 2143 was first introduced by commit
:::::: 536f0741f324f116d8b059295999945a2dac56bc ocfs2/cluster: Track number of global heartbeat regions

:::::: TO: Sunil Mushran <sunil.mushran@xxxxxxxxxx>
:::::: CC: Sunil Mushran <sunil.mushran@xxxxxxxxxx>

---
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