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random: move randomize_page() into mm where it belongs

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commit 5ad7dd882e45d7fe432c32e896e2aaa0b21746ea upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jason A. Donenfeld
2022-05-14 13:59:30 +02:00
committed by Greg Kroah-Hartman
parent 3d1f971aa8
commit 5d1c3989a2
4 changed files with 117 additions and 158 deletions
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2
include/linux/random.h
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@@ -64,8 +64,6 @@ 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);
int wait_for_random_bytes(void);