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
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chips	…
devices	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
lpddr	…
maps	mtd: dc21285: use raw spinlock functions for nw_gpio_lock	2015-10-22 09:20:02 +08:00
nand	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
onenand	…
tests	…
ubi	UBI: return ENOSPC if no enough space available	2016-04-27 18:55:25 +08:00
Kconfig	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
Makefile	…
afs.c	…
ar7part.c	…
bcm63xxpart.c	…
cmdlinepart.c	…
ftl.c	…
inftlcore.c	…
inftlmount.c	…
mtd_blkdevs.c	UPSTREAM: block: disable entropy contributions for nonrot devices	2018-01-01 22:06:21 +03:00
mtdblock.c	…
mtdblock_ro.c	…
mtdchar.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
mtdconcat.c	…
mtdcore.c	…
mtdcore.h	…
mtdoops.c	…
mtdpart.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
mtdsuper.c	…
mtdswap.c	…
nftlcore.c	…
nftlmount.c	…
ofpart.c	…
redboot.c	…
rfd_ftl.c	…
sm_ftl.c	…
sm_ftl.h	…
ssfdc.c	…