28 Apr, 2017
1 commit
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The 'cache_size' argument of dm_block_manager_create() has never been
used. Remove it along with the definitions of the constants passed as
the 'cache_size' argument.Signed-off-by: Bart Van Assche
Reviewed-by: Hannes Reinecke
Signed-off-by: Mike Snitzer
25 Apr, 2017
1 commit
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When committing era metadata to disk, it doesn't always save the latest
spacemap metadata root in superblock. Due to this, metadata is getting
corrupted sometimes when reopening the device. The correct order of update
should be, pre-commit (shadows spacemap root), save the spacemap root
(newly shadowed block) to in-core superblock and then the final commit.Cc: stable@vger.kernel.org
Signed-off-by: Somasundaram Krishnasamy
Signed-off-by: Mike Snitzer
02 Feb, 2017
1 commit
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We will want to have struct backing_dev_info allocated separately from
struct request_queue. As the first step add pointer to backing_dev_info
to request_queue and convert all users touching it. No functional
changes in this patch.Reviewed-by: Christoph Hellwig
Signed-off-by: Jan Kara
Signed-off-by: Jens Axboe
08 Aug, 2016
1 commit
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Since commit 63a4cc24867d, bio->bi_rw contains flags in the lower
portion and the op code in the higher portions. This means that
old code that relies on manually setting bi_rw is most likely
going to be broken. Instead of letting that brokeness linger,
rename the member, to force old and out-of-tree code to break
at compile time instead of at runtime.No intended functional changes in this commit.
Signed-off-by: Jens Axboe
08 Jun, 2016
1 commit
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To avoid confusion between REQ_OP_FLUSH, which is handled by
request_fn drivers, and upper layers requesting the block layer
perform a flush sequence along with possibly a WRITE, this patch
renames REQ_FLUSH to REQ_PREFLUSH.Signed-off-by: Mike Christie
Reviewed-by: Christoph Hellwig
Reviewed-by: Hannes Reinecke
Signed-off-by: Jens Axboe
01 Nov, 2015
1 commit
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dm_bm_unlock and dm_tm_unlock return an integer value but the returned
value is always 0. The calling code sometimes checks the return value
and sometimes doesn't.Eliminate these unnecessary return values and also the checks for them.
Signed-off-by: Mikulas Patocka
Signed-off-by: Mike Snitzer
14 Aug, 2015
1 commit
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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
Cc: Lars Ellenberg
Cc: drbd-user@lists.linbit.com
Cc: Jiri Kosina
Cc: Yehuda Sadeh
Cc: Sage Weil
Cc: Alex Elder
Cc: ceph-devel@vger.kernel.org
Cc: Alasdair Kergon
Cc: Mike Snitzer
Cc: dm-devel@redhat.com
Cc: Neil Brown
Cc: linux-raid@vger.kernel.org
Cc: Christoph Hellwig
Cc: "Martin K. Petersen"
Acked-by: NeilBrown (for the 'md' bits)
Acked-by: Mike Snitzer
Signed-off-by: Kent Overstreet
[dpark: also remove ->merge_bvec_fn() in dm-thin as well as
dm-era-target, and resolve merge conflicts]
Signed-off-by: Dongsu Park
Signed-off-by: Ming Lin
Signed-off-by: Jens Axboe
04 Jun, 2014
1 commit
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era_ctr() may call era_destroy() before era->md is initialized so
era_destory() must only close the metadata object if it is not NULL.Signed-off-by: Joe Thornber
Signed-off-by: Naohiro Aota
Signed-off-by: Mike Snitzer
Cc: stable@vger.kernel.org # 3.15+
28 Mar, 2014
2 commits
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In theory copying the space map root can fail, but in practice it never
does because we're careful to check what size buffer is needed.But make certain we're able to copy the space map roots before
locking the superblock.Signed-off-by: Joe Thornber
Signed-off-by: Mike Snitzer
Cc: stable@vger.kernel.org # drop dm-era and dm-cache changes as needed -
dm-era is a target that behaves similar to the linear target. In
addition it keeps track of which blocks were written within a user
defined period of time called an 'era'. Each era target instance
maintains the current era as a monotonically increasing 32-bit
counter.Use cases include tracking changed blocks for backup software, and
partially invalidating the contents of a cache to restore cache
coherency after rolling back a vendor snapshot.dm-era is primarily expected to be paired with the dm-cache target.
Signed-off-by: Joe Thornber
Signed-off-by: Mike Snitzer