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| author | Milan Broz <mbroz@redhat.com> | 2008-07-21 15:00:39 +0400 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2008-07-21 15:00:39 +0400 |
| commit | 9980c638a666ecd88acaf0a7ab91043d4a3f44d1 (patch) | |
| tree | 89434f8d20d4e330400d8663dcc53188a9956f8c /drivers/md/dm-table.c | |
| parent | 7bc3447b692185c5ea78bee93d0ef1dee2fd7ce7 (diff) | |
| download | linux-9980c638a666ecd88acaf0a7ab91043d4a3f44d1.tar.xz | |
dm table: remove merge_bvec sector restriction
Remove max_sector restriction - merge function replaced it.
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-table.c')
| -rw-r--r-- | drivers/md/dm-table.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 94116eaf4709..798e468103b8 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -506,14 +506,13 @@ void dm_set_device_limits(struct dm_target *ti, struct block_device *bdev) rs->max_sectors = min_not_zero(rs->max_sectors, q->max_sectors); - /* FIXME: Device-Mapper on top of RAID-0 breaks because DM - * currently doesn't honor MD's merge_bvec_fn routine. - * In this case, we'll force DM to use PAGE_SIZE or - * smaller I/O, just to be safe. A better fix is in the - * works, but add this for the time being so it will at - * least operate correctly. + /* + * Check if merge fn is supported. + * If not we'll force DM to use PAGE_SIZE or + * smaller I/O, just to be safe. */ - if (q->merge_bvec_fn) + + if (q->merge_bvec_fn && !ti->type->merge) rs->max_sectors = min_not_zero(rs->max_sectors, (unsigned int) (PAGE_SIZE >> 9)); |