Milan Broz c3c4555edd dm table: clear add_random unless all devices have it set ...

Always clear QUEUE_FLAG_ADD_RANDOM if any underlying device does not
have it set. Otherwise devices with predictable characteristics may
contribute entropy.

QUEUE_FLAG_ADD_RANDOM specifies whether or not queue IO timings
contribute to the random pool.

For bio-based targets this flag is always 0 because such devices have no
real queue.

For request-based devices this flag was always set to 1 by default.

Now set it according to the flags on underlying devices. If there is at
least one device which should not contribute, set the flag to zero: If a
device, such as fast SSD storage, is not suitable for supplying entropy,
a request-based queue stacked over it will not be either.

Because the checking logic is exactly same as for the rotational flag,
share the iteration function with device_is_nonrot().

Signed-off-by: Milan Broz <mbroz@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

2012-09-26 23:45:43 +01:00

..

persistent-data

dm persistent data: introduce dm_bm_set_read_only

2012-07-27 15:08:15 +01:00

bitmap.c

md/raid1: submit IO from originating thread instead of md thread.

2012-08-02 08:33:20 +10:00

bitmap.h

md/bitmap: record the space available for the bitmap in the superblock.

2012-05-22 13:55:34 +10:00

dm-bio-record.h

…

dm-bufio.c

dm bufio: prefetch

2012-03-28 18:41:29 +01:00

dm-bufio.h

dm bufio: prefetch

2012-03-28 18:41:29 +01:00

dm-crypt.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-delay.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-exception-store.c

dm: replace simple_strtoul

2012-07-27 15:07:59 +01:00

dm-exception-store.h

…

dm-flakey.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-io.c

dm io: fix discard support

2012-03-07 19:09:37 +00:00

dm-ioctl.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-kcopyd.c

dm kcopyd: add dm_kcopyd_zero to zero an area

2011-10-31 20:18:58 +00:00

dm-linear.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-log-userspace-base.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

dm-log-userspace-transfer.c

connector/userns: replace netlink uses of cap_raised() with capable()

2012-05-10 23:21:39 -04:00

dm-log-userspace-transfer.h

…

dm-log.c

dm: use memweight()

2012-07-30 17:25:16 -07:00

dm-mpath.c

dm mpath: only retry ioctl when no paths if queue_if_no_path set

2012-09-26 23:45:41 +01:00

dm-mpath.h

…

dm-path-selector.c

md: Add module.h to all files using it implicitly

2011-10-31 19:31:18 -04:00

dm-path-selector.h

…

dm-queue-length.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-raid1.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-raid.c

Merge branch 'for-next' of git://neil.brown.name/md

2012-08-01 09:02:01 -07:00

dm-region-hash.c

dm raid1: fix crash with mirror recovery and discard

2012-07-20 14:25:03 +01:00

dm-round-robin.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-service-time.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-snap-persistent.c

md: Add in export.h for files using EXPORT_SYMBOL

2011-10-31 19:31:19 -04:00

dm-snap-transient.c

md: Add in export.h for files using EXPORT_SYMBOL

2011-10-31 19:31:19 -04:00

dm-snap.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-stripe.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-sysfs.c

…

dm-table.c

dm table: clear add_random unless all devices have it set

2012-09-26 23:45:43 +01:00

dm-target.c

…

dm-thin-metadata.c

dm thin metadata: introduce dm_pool_abort_metadata

2012-07-27 15:08:15 +01:00

dm-thin-metadata.h

dm thin metadata: introduce dm_pool_abort_metadata

2012-07-27 15:08:15 +01:00

dm-thin.c

dm thin: do not set discard_zeroes_data

2012-09-26 23:45:39 +01:00

dm-uevent.c

md: Add in export.h for files using EXPORT_SYMBOL

2011-10-31 19:31:19 -04:00

dm-uevent.h

…

dm-verity.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-zero.c

…

dm.c

dm: handle requests beyond end of device instead of using BUG_ON

2012-09-26 23:45:42 +01:00

dm.h

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

faulty.c

md: tidy up rdev_for_each usage.

2012-03-19 12:46:39 +11:00

Kconfig

Merge tag 'md-3.6' of git://neil.brown.name/md

2012-08-02 11:34:40 -07:00

linear.c

md/linear: If md_integrity_register() fails, linear_run() must free the mem.

2012-04-02 09:48:37 +10:00

linear.h

md/linear: typedef removal: linear_conf_t -> struct linear_conf

2011-10-11 16:48:54 +11:00

Makefile

dm: add verity target

2012-03-28 18:43:38 +01:00

md.c

md: make sure metadata is updated when spares are activated or removed.

2012-09-19 12:54:22 +10:00

md.h

blk: pass from_schedule to non-request unplug functions.

2012-07-31 09:08:15 +02:00

multipath.c

md: make 'name' arg to md_register_thread non-optional.

2012-07-03 15:56:52 +10:00

multipath.h

md/multipath: typedef removal: multipath_conf_t -> struct mpconf

2011-10-11 16:48:57 +11:00

raid0.c

md: Avoid OOPS when reshaping raid1 to raid0

2012-04-03 15:37:26 +10:00

raid0.h

md: add proper merge_bvec handling to RAID0 and Linear.

2012-03-19 12:46:39 +11:00

raid1.c

Merge tag 'md-3.6' of git://neil.brown.name/md

2012-08-02 11:34:40 -07:00

raid1.h

md/raid1: prevent merging too large request

2012-07-31 10:03:53 +10:00

raid5.c

md/raid5: fix calculate of 'degraded' when a replacement becomes active.

2012-09-19 12:52:30 +10:00

raid5.h

Merge tag 'md-3.6' of git://neil.brown.name/md

2012-08-02 11:34:40 -07:00

raid10.c

md/raid10: fix problem with on-stack allocation of r10bio structure.

2012-08-18 09:51:42 +10:00

raid10.h

md/raid10: fix problem with on-stack allocation of r10bio structure.

2012-08-18 09:51:42 +10:00