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module: export param_free_charp()

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Change the param_free_charp() function from static to exported.

It is used by zswap in the next patch ("zswap: use charp for zswap param
strings").

Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Seth Jennings <sjennings@variantweb.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dan Streetman 2015-11-06 16:29:12 -08:00 committed by Linus Torvalds
parent b0c9865fd2
commit 3d9c637f4a
2 changed files with 3 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

1
include/linux/moduleparam.h
View file

@ -386,6 +386,7 @@ extern int param_get_ullong(char *buffer, const struct kernel_param *kp);
extern const struct kernel_param_ops param_ops_charp; extern const struct kernel_param_ops param_ops_charp;
extern int param_set_charp(const char *val, const struct kernel_param *kp); extern int param_set_charp(const char *val, const struct kernel_param *kp);
extern int param_get_charp(char *buffer, const struct kernel_param *kp); extern int param_get_charp(char *buffer, const struct kernel_param *kp);
extern void param_free_charp(void *arg);
#define param_check_charp(name, p) __param_check(name, p, char *) #define param_check_charp(name, p) __param_check(name, p, char *)
/* We used to allow int as well as bool. We're taking that away! */ /* We used to allow int as well as bool. We're taking that away! */

3
kernel/params.c
View file

@ -325,10 +325,11 @@ int param_get_charp(char *buffer, const struct kernel_param *kp)
} }
EXPORT_SYMBOL(param_get_charp); EXPORT_SYMBOL(param_get_charp);
static void param_free_charp(void *arg) void param_free_charp(void *arg)
{ {
maybe_kfree_parameter(*((char **)arg)); maybe_kfree_parameter(*((char **)arg));
} }
EXPORT_SYMBOL(param_free_charp);
const struct kernel_param_ops param_ops_charp = { const struct kernel_param_ops param_ops_charp = {
.set = param_set_charp, .set = param_set_charp,