android_kernel_google_msm/drivers/ide
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 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2011-11-03 13:28:14 -07:00
Makefile ARM: at91: drop ide driver in favor of the pata one 2012-02-13 18:31:37 +01:00
aec62xx.c
ali14xx.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
alim15x3.c
amd74xx.c
atiixp.c
au1xxx-ide.c MIPS: Alchemy: kill au1xxx.h header 2011-10-24 23:34:24 +01:00
buddha.c ide/ata: Add module.h to the implicit modular users 2011-10-31 19:31:37 -04:00
cmd64x.c
cmd640.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
cs5520.c
cs5530.c
cs5535.c
cs5536.c
cy82c693.c cy82c693: fix PCI device selection 2011-10-13 17:04:50 -04:00
delkin_cb.c
dtc2278.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
falconide.c
gayle.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
hpt366.c
ht6560b.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
icside.c icside: DMA support fix 2011-10-13 17:04:50 -04:00
ide-4drives.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
ide-acpi.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
ide-atapi.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
ide-cd.c ide-{cd,floppy,tape}: Do not include <linux/irq.h> 2011-11-08 22:35:46 +01:00
ide-cd.h
ide-cd_ioctl.c
ide-cd_verbose.c
ide-cs.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ide-devsets.c
ide-disk.c UPSTREAM: block: disable entropy contributions for nonrot devices 2018-01-01 22:06:21 +03:00
ide-disk.h
ide-disk_ioctl.c
ide-disk_proc.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
ide-dma-sff.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
ide-dma.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
ide-eh.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
ide-floppy.c ide-{cd,floppy,tape}: Do not include <linux/irq.h> 2011-11-08 22:35:46 +01:00
ide-floppy.h
ide-floppy_ioctl.c block: add and use scsi_blk_cmd_ioctl 2012-01-14 15:07:24 -08:00
ide-floppy_proc.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
ide-gd.c
ide-gd.h
ide-generic.c
ide-h8300.c
ide-io-std.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
ide-io.c
ide-ioctls.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
ide-iops.c
ide-legacy.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
ide-lib.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
ide-park.c
ide-pci-generic.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
ide-pio-blacklist.c
ide-pm.c
ide-pnp.c ide/ata: Add module.h to the implicit modular users 2011-10-31 19:31:37 -04:00
ide-probe.c
ide-proc.c
ide-scan-pci.c
ide-sysfs.c
ide-tape.c ide-{cd,floppy,tape}: Do not include <linux/irq.h> 2011-11-08 22:35:46 +01:00
ide-taskfile.c ide: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:17 +08:00
ide-timings.c
ide-xfer-mode.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
ide.c
ide_platform.c
it821x.c
it8172.c
it8213.c
jmicron.c
macide.c ide/ata: Add module.h to the implicit modular users 2011-10-31 19:31:37 -04:00
ns87415.c
opti621.c
palm_bk3710.c
pdc202xx_new.c
pdc202xx_old.c
piix.c piix: ICH7 MWDMA1 errata 2011-10-11 15:19:43 -04:00
pmac.c ide/ata: Add module.h to the implicit modular users 2011-10-31 19:31:37 -04:00
q40ide.c ide/ata: Add module.h to the implicit modular users 2011-10-31 19:31:37 -04:00
qd65xx.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
qd65xx.h
rapide.c
rz1000.c
sc1200.c
scc_pata.c
serverworks.c
setup-pci.c ide/ata: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:37 -04:00
sgiioc4.c
siimage.c
sis5513.c
sl82c105.c
slc90e66.c
tc86c001.c ide/ata: Add module.h to the implicit modular users 2011-10-31 19:31:37 -04:00
triflex.c IDE: Don't powerdown Compaq Triflex IDE device on suspend 2011-10-13 17:04:49 -04:00
trm290.c
tx4938ide.c
tx4939ide.c
umc8672.c module_param: make bool parameters really bool (drivers & misc) 2012-01-13 09:32:20 +10:30
via82cxxx.c