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sysctl: remove all extern declaration from sysctl.c

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Extern declarations in .c files are a bad style and can lead to
mismatches.  Use existing definitions in headers where they exist,
and otherwise move the external declarations to suitable header
files.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig 2020-04-24 08:43:36 +02:00 • committed by Al Viro
parent 26363af564
commit 2374c09b1c
7 changed files with 24 additions and 42 deletions
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4
include/linux/coredump.h
View file

@ -22,4 +22,8 @@ extern void do_coredump(const kernel_siginfo_t *siginfo);
static inline void do_coredump(const kernel_siginfo_t *siginfo) {}
#endif
extern int core_uses_pid;
extern char core_pattern[];
extern unsigned int core_pipe_limit;
#endif /* _LINUX_COREDUMP_H */

2
include/linux/file.h
View file

@ -94,4 +94,6 @@ extern void fd_install(unsigned int fd, struct file *file);
extern void flush_delayed_fput(void);
extern void __fput_sync(struct file *);
extern unsigned int sysctl_nr_open_min, sysctl_nr_open_max;
#endif /* __LINUX_FILE_H */

2
include/linux/mm.h
View file

@ -3140,5 +3140,7 @@ unsigned long wp_shared_mapping_range(struct address_space *mapping,
pgoff_t first_index, pgoff_t nr);
#endif
extern int sysctl_nr_trim_pages;
#endif /* __KERNEL__ */
#endif /* _LINUX_MM_H */

2
include/linux/mmzone.h
View file

@ -909,6 +909,7 @@ static inline int is_highmem(struct zone *zone)
/* These two functions are used to setup the per zone pages min values */
struct ctl_table;
int min_free_kbytes_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
int watermark_scale_factor_sysctl_handler(struct ctl_table *, int,
@ -925,6 +926,7 @@ int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *, int,
extern int numa_zonelist_order_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
extern int percpu_pagelist_fraction;
extern char numa_zonelist_order[];
#define NUMA_ZONELIST_ORDER_LEN 16

3
include/linux/pid.h
View file

@ -108,6 +108,9 @@ extern void transfer_pid(struct task_struct *old, struct task_struct *new,
struct pid_namespace;
extern struct pid_namespace init_pid_ns;
extern int pid_max;
extern int pid_max_min, pid_max_max;
/*
* look up a PID in the hash table. Must be called with the tasklist_lock
* or rcu_read_lock() held.

8
include/linux/sysctl.h
View file

@ -207,7 +207,15 @@ void unregister_sysctl_table(struct ctl_table_header * table);
extern int sysctl_init(void);
extern int pwrsw_enabled;
extern int unaligned_enabled;
extern int unaligned_dump_stack;
extern int no_unaligned_warning;
extern struct ctl_table sysctl_mount_point[];
extern struct ctl_table random_table[];
extern struct ctl_table firmware_config_table[];
extern struct ctl_table epoll_table[];
#else /* CONFIG_SYSCTL */
static inline struct ctl_table_header *register_sysctl_table(struct ctl_table * table)