The patch titled
Subject: random: remove unused randomize_range()
has been added to the -mm tree. Its filename is
random-remove-unused-randomize_range.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/random-remove-unused-randomize_range.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/random-remove-unused-randomize_range.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Jason Cooper <jason@xxxxxxxxxxxxxx>
Subject: random: remove unused randomize_range()
All call sites for randomize_range have been updated to use the much
simpler and more robust randomize_page(). Remove the now unnecessary
code.
Link: http://lkml.kernel.org/r/20160803233913.32511-8-jason@xxxxxxxxxxxxxx
Signed-off-by: Jason Cooper <jason@xxxxxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: "Theodore Ts'o" <tytso@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/random.c | 19 -------------------
include/linux/random.h | 1 -
2 files changed, 20 deletions(-)
diff -puN drivers/char/random.c~random-remove-unused-randomize_range drivers/char/random.c
--- a/drivers/char/random.c~random-remove-unused-randomize_range
+++ a/drivers/char/random.c
@@ -2100,25 +2100,6 @@ unsigned long get_random_long(void)
}
EXPORT_SYMBOL(get_random_long);
-/*
- * randomize_range() returns a start address such that
- *
- * [...... <range> .....]
- * start end
- *
- * a <range> with size "len" starting at the return value is inside in the
- * area defined by [start, end], but is otherwise randomized.
- */
-unsigned long
-randomize_range(unsigned long start, unsigned long end, unsigned long len)
-{
- unsigned long range = end - len - start;
-
- if (end <= start + len)
- return 0;
- return PAGE_ALIGN(get_random_int() % range + start);
-}
-
/**
* randomize_page - Generate a random, page aligned address
* @start: The smallest acceptable address the caller will take.
diff -puN include/linux/random.h~random-remove-unused-randomize_range include/linux/random.h
--- a/include/linux/random.h~random-remove-unused-randomize_range
+++ a/include/linux/random.h
@@ -34,7 +34,6 @@ extern const struct file_operations rand
unsigned int get_random_int(void);
unsigned long get_random_long(void);
-unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len);
unsigned long randomize_page(unsigned long start, unsigned long range);
u32 prandom_u32(void);
_
Patches currently in -mm which might be from jason@xxxxxxxxxxxxxx are
random-simplify-api-for-random-address-requests.patch
x86-use-simpler-api-for-random-address-requests.patch
arm-use-simpler-api-for-random-address-requests.patch
arm64-use-simpler-api-for-random-address-requests.patch
tile-use-simpler-api-for-random-address-requests.patch
unicore32-use-simpler-api-for-random-address-requests.patch
random-remove-unused-randomize_range.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
