Mike Snitzer efc542e8fd UPSTREAM: block: disable entropy contributions for nonrot devices ... (cherry picked from commit b277da0a8a) 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: I8e9005feeedf301e486cf1aa13c804e322a3591b Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com> Signed-off-by: Artem Borisov <dedsa2002@gmail.com>		2018-01-01 22:06:21 +03:00
..
Kconfig	zram: add lz4 algorithm backend	2018-01-01 21:26:52 +03:00
Makefile	zram: add lz4 algorithm backend	2018-01-01 21:26:52 +03:00
zcomp.c	UPSTREAM: zram: pass gfp from zcomp frontend to backend	2018-01-01 22:02:43 +03:00
zcomp.h	UPSTREAM: zram: pass gfp from zcomp frontend to backend	2018-01-01 22:02:43 +03:00
zcomp_lz4.c	UPSTREAM: zram/zcomp: do not zero out zcomp private pages	2018-01-01 22:02:44 +03:00
zcomp_lz4.h	zram: add lz4 algorithm backend	2018-01-01 21:26:52 +03:00
zcomp_lzo.c	UPSTREAM: zram/zcomp: do not zero out zcomp private pages	2018-01-01 22:02:44 +03:00
zcomp_lzo.h	zram: introduce compressing backend abstraction	2018-01-01 21:26:50 +03:00
zram_drv.c	UPSTREAM: block: disable entropy contributions for nonrot devices	2018-01-01 22:06:21 +03:00
zram_drv.h	BACKPORT: zram: support compaction	2018-01-01 21:27:10 +03:00