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  1. 19 7月, 2016 3 次提交
  3. 17 6月, 2016 1 次提交
  5. 15 6月, 2016 19 次提交
  7. 14 6月, 2016 6 次提交
  9. 08 6月, 2016 1 次提交
  11. 13 5月, 2016 1 次提交
  13. 03 10月, 2015 1 次提交
    • M
      dm raid: fix round up of default region size · 042745ee
      由 Mikulas Patocka 提交于 
      Commit 3a0f9aae ("dm raid: round region_size to power of two")
intended to make sure that the default region size is a power of two.
However, the logic in that commit is incorrect and sets the variable
region_size to 0 or 1, depending on whether min_region_size is a power
of two.

Fix this logic, using roundup_pow_of_two(), so that region_size is
properly rounded up to the next power of two.
Signed-off-by: NMikulas Patocka <mpatocka@redhat.com>
Fixes: 3a0f9aae ("dm raid: round region_size to power of two")
Cc: stable@vger.kernel.org # v3.8+
Signed-off-by: NMike Snitzer <snitzer@redhat.com>
      042745ee
  15. 14 8月, 2015 1 次提交
    • K
      block: kill merge_bvec_fn() completely · 8ae12666
      由 Kent Overstreet 提交于 
      As generic_make_request() is now able to handle arbitrarily sized bios,
it's no longer necessary for each individual block driver to define its
own ->merge_bvec_fn() callback. Remove every invocation completely.

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Lars Ellenberg <drbd-dev@lists.linbit.com>
Cc: drbd-user@lists.linbit.com
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Yehuda Sadeh <yehuda@inktank.com>
Cc: Sage Weil <sage@inktank.com>
Cc: Alex Elder <elder@kernel.org>
Cc: ceph-devel@vger.kernel.org
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: dm-devel@redhat.com
Cc: Neil Brown <neilb@suse.de>
Cc: linux-raid@vger.kernel.org
Cc: Christoph Hellwig <hch@infradead.org>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: NeilBrown <neilb@suse.de> (for the 'md' bits)
Acked-by: NMike Snitzer <snitzer@redhat.com>
Signed-off-by: NKent Overstreet <kent.overstreet@gmail.com>
[dpark: also remove ->merge_bvec_fn() in dm-thin as well as
 dm-era-target, and resolve merge conflicts]
Signed-off-by: NDongsu Park <dpark@posteo.net>
Signed-off-by: NMing Lin <ming.l@ssi.samsung.com>
Signed-off-by: NJens Axboe <axboe@fb.com>
      8ae12666
  17. 30 5月, 2015 3 次提交
  19. 10 2月, 2015 1 次提交
  21. 04 2月, 2015 1 次提交
    • N
      md: make ->congested robust against personality changes. · 5c675f83
      由 NeilBrown 提交于 
      There is currently no locking around calls to the 'congested'
bdi function.  If called at an awkward time while an array is
being converted from one level (or personality) to another, there
is a tiny chance of running code in an unreferenced module etc.

So add a 'congested' function to the md_personality operations
structure, and call it with appropriate locking from a central
'mddev_congested'.

When the array personality is changing the array will be 'suspended'
so no IO is processed.
If mddev_congested detects this, it simply reports that the
array is congested, which is a safe guess.
As mddev_suspend calls synchronize_rcu(), mddev_congested can
avoid races by included the whole call inside an rcu_read_lock()
region.
This require that the congested functions for all subordinate devices
can be run under rcu_lock.  Fortunately this is the case.
Signed-off-by: NNeilBrown <neilb@suse.de>
      5c675f83
  23. 30 10月, 2014 1 次提交
  25. 21 10月, 2014 1 次提交