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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2010-01-11 09:21:50 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2010-01-11 14:29:20 +0100 |
| commit | b27d7f16d3c6c27345d4280a739809c1c2c4c0b5 (patch) | |
| tree | cb2947bf2c466616dad6a160a9efb47208432d96 /drivers/md/dm-table.c | |
| parent | block: bdev_stack_limits wrapper (diff) | |
| download | linux-b27d7f16d3c6c27345d4280a739809c1c2c4c0b5.tar.xz linux-b27d7f16d3c6c27345d4280a739809c1c2c4c0b5.zip | |
DM: Fix device mapper topology stacking
Make DM use bdev_stack_limits() function so that partition offsets get
taken into account when calculating alignment. Clarify stacking
warnings.
Also remove obsolete clearing of final alignment_offset and misalignment
flag.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: Alasdair G. Kergon <agk@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/md/dm-table.c')
| -rw-r--r-- | drivers/md/dm-table.c | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index be625475cf6d..4b22feb01a0c 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -503,16 +503,15 @@ int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev, return 0; } - if (blk_stack_limits(limits, &q->limits, start << 9) < 0) - DMWARN("%s: target device %s is misaligned: " + if (bdev_stack_limits(limits, bdev, start) < 0) + DMWARN("%s: adding target device %s caused an alignment inconsistency: " "physical_block_size=%u, logical_block_size=%u, " "alignment_offset=%u, start=%llu", dm_device_name(ti->table->md), bdevname(bdev, b), q->limits.physical_block_size, q->limits.logical_block_size, q->limits.alignment_offset, - (unsigned long long) start << 9); - + (unsigned long long) start << SECTOR_SHIFT); /* * Check if merge fn is supported. @@ -1026,9 +1025,9 @@ combine_limits: * for the table. */ if (blk_stack_limits(limits, &ti_limits, 0) < 0) - DMWARN("%s: target device " + DMWARN("%s: adding target device " "(start sect %llu len %llu) " - "is misaligned", + "caused an alignment inconsistency", dm_device_name(table->md), (unsigned long long) ti->begin, (unsigned long long) ti->len); @@ -1080,15 +1079,6 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, struct queue_limits *limits) { /* - * Each target device in the table has a data area that should normally - * be aligned such that the DM device's alignment_offset is 0. - * FIXME: Propagate alignment_offsets up the stack and warn of - * sub-optimal or inconsistent settings. - */ - limits->alignment_offset = 0; - limits->misaligned = 0; - - /* * Copy table's limits to the DM device's request_queue */ q->limits = *limits; |