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authorJason A. Donenfeld <Jason@zx2c4.com>2022-03-23 07:21:52 +0300
committerJason A. Donenfeld <Jason@zx2c4.com>2022-03-25 17:49:40 +0300
commitdd7aa36e535797926d8eb311da7151919130139d (patch)
tree4d74e46793e95221b4a655993f5d5df8c7cbd8bb /drivers/char/random.c
parentd97c68d178fbf8aaaf21b69b446f2dfb13909316 (diff)
downloadlinux-dd7aa36e535797926d8eb311da7151919130139d.tar.xz
random: re-add removed comment about get_random_{u32,u64} reseeding
The comment about get_random_{u32,u64}() not invoking reseeding got added in an unrelated commit, that then was recently reverted by 0313bc278dac ("Revert "random: block in /dev/urandom""). So this adds that little comment snippet back, and improves the wording a bit too. Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'drivers/char/random.c')
-rw-r--r--drivers/char/random.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 1d7aac2a9600..40107f8b9e9e 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -224,9 +224,10 @@ static void _warn_unseeded_randomness(const char *func_name, void *caller, void
*
* These interfaces will return the requested number of random bytes
* into the given buffer or as a return value. This is equivalent to
- * a read from /dev/urandom. The integer family of functions may be
- * higher performance for one-off random integers, because they do a
- * bit of buffering.
+ * a read from /dev/urandom. The u32, u64, int, and long family of
+ * functions may be higher performance for one-off random integers,
+ * because they do a bit of buffering and do not invoke reseeding
+ * until the buffer is emptied.
*
*********************************************************************/