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random: move randomize_page() into mm where it belongs

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randomize_page is an mm function. It is documented like one. It contains
the history of one. It has the naming convention of one. It looks
just like another very similar function in mm, randomize_stack_top().
And it has always been maintained and updated by mm people. There is no
need for it to be in random.c. In the "which shape does not look like
the other ones" test, pointing to randomize_page() is correct.

So move randomize_page() into mm/util.c, right next to the similar
randomize_stack_top() function.

This commit contains no actual code changes.

Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2022-05-14 13:59:30 +02:00
commit 5ad7dd882e
4 changed files with 33 additions and 34 deletions
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2
include/linux/random.h
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@ -72,8 +72,6 @@ static inline unsigned long get_random_canary(void)
return get_random_long() & CANARY_MASK;
}
unsigned long randomize_page(unsigned long start, unsigned long range);
int __init random_init(const char *command_line);
bool rng_is_initialized(void);
bool rng_has_arch_random(void);