diff options
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 33 |
1 files changed, 15 insertions, 18 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 5401cdce0fc..2765cf2ba0f 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -63,18 +63,6 @@ struct dm_io { }; /* - * For bio-based dm. - * One of these is allocated per target within a bio. Hopefully - * this will be simplified out one day. - */ -struct dm_target_io { - struct dm_io *io; - struct dm_target *ti; - union map_info info; - struct bio clone; -}; - -/* * For request-based dm. * One of these is allocated per request. */ @@ -1980,13 +1968,20 @@ static void free_dev(struct mapped_device *md) static void __bind_mempools(struct mapped_device *md, struct dm_table *t) { - struct dm_md_mempools *p; + struct dm_md_mempools *p = dm_table_get_md_mempools(t); - if (md->io_pool && (md->tio_pool || dm_table_get_type(t) == DM_TYPE_BIO_BASED) && md->bs) - /* the md already has necessary mempools */ + if (md->io_pool && (md->tio_pool || dm_table_get_type(t) == DM_TYPE_BIO_BASED) && md->bs) { + /* + * The md already has necessary mempools. Reload just the + * bioset because front_pad may have changed because + * a different table was loaded. + */ + bioset_free(md->bs); + md->bs = p->bs; + p->bs = NULL; goto out; + } - p = dm_table_get_md_mempools(t); BUG_ON(!p || md->io_pool || md->tio_pool || md->bs); md->io_pool = p->io_pool; @@ -2745,7 +2740,7 @@ int dm_noflush_suspending(struct dm_target *ti) } EXPORT_SYMBOL_GPL(dm_noflush_suspending); -struct dm_md_mempools *dm_alloc_md_mempools(unsigned type, unsigned integrity) +struct dm_md_mempools *dm_alloc_md_mempools(unsigned type, unsigned integrity, unsigned per_bio_data_size) { struct dm_md_mempools *pools = kmalloc(sizeof(*pools), GFP_KERNEL); unsigned int pool_size = (type == DM_TYPE_BIO_BASED) ? 16 : MIN_IOS; @@ -2753,6 +2748,8 @@ struct dm_md_mempools *dm_alloc_md_mempools(unsigned type, unsigned integrity) if (!pools) return NULL; + per_bio_data_size = roundup(per_bio_data_size, __alignof__(struct dm_target_io)); + pools->io_pool = (type == DM_TYPE_BIO_BASED) ? mempool_create_slab_pool(MIN_IOS, _io_cache) : mempool_create_slab_pool(MIN_IOS, _rq_bio_info_cache); @@ -2768,7 +2765,7 @@ struct dm_md_mempools *dm_alloc_md_mempools(unsigned type, unsigned integrity) pools->bs = (type == DM_TYPE_BIO_BASED) ? bioset_create(pool_size, - offsetof(struct dm_target_io, clone)) : + per_bio_data_size + offsetof(struct dm_target_io, clone)) : bioset_create(pool_size, offsetof(struct dm_rq_clone_bio_info, clone)); if (!pools->bs) |