Mike Snitzer b636eb75ff UPSTREAM: block: disable entropy contributions for nonrot devices ... (cherry picked from commit b277da0a8a594308e17881f4926879bd5fca2a2d) Clear QUEUE_FLAG_ADD_RANDOM in all block drivers that set QUEUE_FLAG_NONROT. Historically, all block devices have automatically made entropy contributions. But as previously stated in commit e2e1a148 ("block: add sysfs knob for turning off disk entropy contributions"): - On SSD disks, the completion times aren't as random as they are for rotational drives. So it's questionable whether they should contribute to the random pool in the first place. - Calling add_disk_randomness() has a lot of overhead. There are more reliable sources for randomness than non-rotational block devices. From a security perspective it is better to err on the side of caution than to allow entropy contributions from unreliable "random" sources. Change-Id: Iaace159bea0e9245e6825cccd4f6a1152a166ce1 Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>		2019-07-27 21:47:56 +02:00
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Kconfig	…
Makefile	…
alloc.c	…
bcache.h	…
bset.c	…
bset.h	…
btree.c	…
btree.h	…
closure.c	…
closure.h	…
debug.c	…
debug.h	…
io.c	…
journal.c	…
journal.h	…
movinggc.c	…
request.c	…
request.h	…
stats.c	…
stats.h	…
super.c	UPSTREAM: block: disable entropy contributions for nonrot devices	2019-07-27 21:47:56 +02:00
sysfs.c	…
sysfs.h	…
trace.c	…
util.c	…
util.h	…
writeback.c	…