Mike Snitzer b277da0a8a block: disable entropy contributions for nonrot devices ... 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. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>		2014-10-04 10:55:32 -06:00
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block	block: disable entropy contributions for nonrot devices	2014-10-04 10:55:32 -06:00
char	s390/3215: fix hanging console issue	2014-07-28 10:02:39 +02:00
cio	s390/qdio: add helpers to manage qdio buffers	2014-07-22 09:26:13 +02:00
crypto	s390/zcrypt: improve device probing for zcrypt adapter cards	2014-07-16 10:48:12 +02:00
kvm	virtio_ccw: introduce device_lost in virtio_ccw_device	2014-04-28 11:34:13 +09:30
net	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2014-08-07 08:41:00 -07:00
scsi	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2014-08-07 08:41:00 -07:00
Makefile