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author | Lukas Czerner <lczerner@redhat.com> | 2014-06-11 12:28:43 -0400 |
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committer | Mike Snitzer <snitzer@redhat.com> | 2014-06-11 16:56:12 -0400 |
commit | 09869de57ed2728ae3c619803932a86cb0e2c4f8 (patch) | |
tree | ab74c6c4b5a60a374e8544ad32198f916e373db0 /lib/devres.c | |
parent | adcc44472bacb227ebc0b1a8876efa5302474338 (diff) | |
download | op-kernel-dev-09869de57ed2728ae3c619803932a86cb0e2c4f8.zip op-kernel-dev-09869de57ed2728ae3c619803932a86cb0e2c4f8.tar.gz |
dm thin: update discard_granularity to reflect the thin-pool blocksize
DM thinp already checks whether the discard_granularity of the data
device is a factor of the thin-pool block size. But when using the
dm-thin-pool's discard passdown support, DM thinp was not selecting the
max of the underlying data device's discard_granularity and the
thin-pool's block size.
Update set_discard_limits() to set discard_granularity to the max of
these values. This enables blkdev_issue_discard() to properly align the
discards that are sent to the DM thin device on a full block boundary.
As such each discard will now cover an entire DM thin-pool block and the
block will be reclaimed.
Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'lib/devres.c')
0 files changed, 0 insertions, 0 deletions