diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2012-07-27 18:08:00 +0400 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2012-07-27 18:08:00 +0400 |
| commit | 542f90381422676544382d4071ba44a2de90a0c1 (patch) | |
| tree | 0eae6798ab2fdef68a0eb1ea5ac14f3cc3ffb740 /drivers/md/dm-thin.c | |
| parent | 1df05483d758ea43abc375869fbe06be506ba827 (diff) | |
| download | linux-542f90381422676544382d4071ba44a2de90a0c1.tar.xz | |
dm: support non power of two target max_io_len
Remove the restriction that limits a target's specified maximum incoming
I/O size to be a power of 2.
Rename this setting from 'split_io' to the less-ambiguous 'max_io_len'.
Change it from sector_t to uint32_t, which is plenty big enough, and
introduce a wrapper function dm_set_target_max_io_len() to set it.
Use sector_div() to process it now that it is not necessarily a power of 2.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-thin.c')
| -rw-r--r-- | drivers/md/dm-thin.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index e89f8e7d8a33..350bcf40485e 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -2628,7 +2628,10 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv) goto bad_thin_open; } - ti->split_io = tc->pool->sectors_per_block; + r = dm_set_target_max_io_len(ti, tc->pool->sectors_per_block); + if (r) + goto bad_thin_open; + ti->num_flush_requests = 1; /* In case the pool supports discards, pass them on. */ |