This change unifies the various checks and finalization that occurs on a table prior to use. By doing so, it allows table construction without traversing the dm-ioctl interface. v4: same as v3 but rebundling Signed-off-by: Will Drewry <wad@xxxxxxxxxxxx> --- drivers/md/dm-ioctl.c | 34 --------------------------------- drivers/md/dm-table.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 49 insertions(+), 35 deletions(-) diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index d7500e1..dfde391 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -1112,28 +1112,9 @@ static int populate_table(struct dm_table *table, next = spec->next; } - r = dm_table_set_type(table); - if (r) { - DMWARN("unable to set table type"); - return r; - } - return dm_table_complete(table); } -static int table_prealloc_integrity(struct dm_table *t, - struct mapped_device *md) -{ - struct list_head *devices = dm_table_get_devices(t); - struct dm_dev_internal *dd; - - list_for_each_entry(dd, devices, list) - if (bdev_get_integrity(dd->dm_dev.bdev)) - return blk_integrity_register(dm_disk(md), NULL); - - return 0; -} - static int table_load(struct dm_ioctl *param, size_t param_size) { int r; @@ -1155,21 +1136,6 @@ static int table_load(struct dm_ioctl *param, size_t param_size) goto out; } - r = table_prealloc_integrity(t, md); - if (r) { - DMERR("%s: could not register integrity profile.", - dm_device_name(md)); - dm_table_destroy(t); - goto out; - } - - r = dm_table_alloc_md_mempools(t); - if (r) { - DMWARN("unable to allocate mempools for this table"); - dm_table_destroy(t); - goto out; - } - down_write(&_hash_lock); hc = dm_get_mdptr(md); if (!hc || hc->md != md) { diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 9924ea2..ef6a3ab 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -900,7 +900,7 @@ static int setup_indexes(struct dm_table *t) /* * Builds the btree to index the map. */ -int dm_table_complete(struct dm_table *t) +int dm_table_build_index(struct dm_table *t) { int r = 0; unsigned int leaf_nodes; @@ -919,6 +919,54 @@ int dm_table_complete(struct dm_table *t) return r; } +/* + * Register the mapped device for blk_integrity support if + * the underlying devices support it. + */ +static int dm_table_prealloc_integrity(struct dm_table *t, struct mapped_device *md) +{ + struct list_head *devices = dm_table_get_devices(t); + struct dm_dev_internal *dd; + + list_for_each_entry(dd, devices, list) + if (bdev_get_integrity(dd->dm_dev.bdev)) + return blk_integrity_register(dm_disk(md), NULL); + + return 0; +} + +/* + * Prepares the table for use by building the indices, + * setting the type, and allocating mempools. + */ +int dm_table_complete(struct dm_table *t) +{ + int r = 0; + r = dm_table_set_type(t); + if (r) { + DMERR("unable to set table type"); + return r; + } + + r = dm_table_build_index(t); + if (r) { + DMERR("unable to build btrees"); + return r; + } + + r = dm_table_prealloc_integrity(t, t->md); + if (r) { + DMERR("could not register integrity profile."); + return r; + } + + r = dm_table_alloc_md_mempools(t); + if (r) { + DMERR("unable to allocate mempools"); + } + return r; +} + static DEFINE_MUTEX(_event_lock); void dm_table_event_callback(struct dm_table *t, void (*fn)(void *), void *context) -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html