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| author | Joe Thornber <ejt@redhat.com> | 2013-03-20 17:21:25 +0000 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2013-03-20 17:21:25 +0000 |
| commit | 58051b94e05a59c4d34f9f1a441af40894817c59 (patch) | |
| tree | 4a4e33cac9a808805e42f0c816a4b8e5b434f28f /drivers/md/dm-cache-policy.c | |
| parent | f046f89a99ccfd9408b94c653374ff3065c7edb3 (diff) | |
| download | linux-3.10-58051b94e05a59c4d34f9f1a441af40894817c59.tar.gz linux-3.10-58051b94e05a59c4d34f9f1a441af40894817c59.tar.bz2 linux-3.10-58051b94e05a59c4d34f9f1a441af40894817c59.zip | |
dm thin: fix non power of two discard granularity calc
Fix a discard granularity calculation to work for non power of 2 block sizes.
In order for thinp to passdown discard bios to the underlying data
device, the data device must have a discard granularity that is a
factor of the thinp block size. Originally this check was done by
using bitops since the block_size was known to be a power of two.
Introduced by commit f13945d75730081830b6f3360266950e2b7c9067
("dm thin: support a non power of 2 discard_granularity").
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-cache-policy.c')
0 files changed, 0 insertions, 0 deletions