diff options
| -rw-r--r-- | drivers/infiniband/core/fmr_pool.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/drivers/infiniband/core/fmr_pool.c b/drivers/infiniband/core/fmr_pool.c index 838bf54458d2..615fe9cc6c56 100644 --- a/drivers/infiniband/core/fmr_pool.c +++ b/drivers/infiniband/core/fmr_pool.c @@ -54,7 +54,7 @@ enum { /* * If an FMR is not in use, then the list member will point to either * its pool's free_list (if the FMR can be mapped again; that is, - * remap_count < IB_FMR_MAX_REMAPS) or its pool's dirty_list (if the + * remap_count < pool->max_remaps) or its pool's dirty_list (if the * FMR needs to be unmapped before being remapped). In either of * these cases it is a bug if the ref_count is not 0. In other words, * if ref_count is > 0, then the list member must not be linked into @@ -84,6 +84,7 @@ struct ib_fmr_pool { int pool_size; int max_pages; + int max_remaps; int dirty_watermark; int dirty_len; struct list_head free_list; @@ -214,8 +215,10 @@ struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd, { struct ib_device *device; struct ib_fmr_pool *pool; + struct ib_device_attr *attr; int i; int ret; + int max_remaps; if (!params) return ERR_PTR(-EINVAL); @@ -228,6 +231,26 @@ struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd, return ERR_PTR(-ENOSYS); } + attr = kmalloc(sizeof *attr, GFP_KERNEL); + if (!attr) { + printk(KERN_WARNING "couldn't allocate device attr struct"); + return ERR_PTR(-ENOMEM); + } + + ret = ib_query_device(device, attr); + if (ret) { + printk(KERN_WARNING "couldn't query device"); + kfree(attr); + return ERR_PTR(ret); + } + + if (!attr->max_map_per_fmr) + max_remaps = IB_FMR_MAX_REMAPS; + else + max_remaps = attr->max_map_per_fmr; + + kfree(attr); + pool = kmalloc(sizeof *pool, GFP_KERNEL); if (!pool) { printk(KERN_WARNING "couldn't allocate pool struct"); @@ -258,6 +281,7 @@ struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd, pool->pool_size = 0; pool->max_pages = params->max_pages_per_fmr; + pool->max_remaps = max_remaps; pool->dirty_watermark = params->dirty_watermark; pool->dirty_len = 0; spin_lock_init(&pool->pool_lock); @@ -279,7 +303,7 @@ struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd, struct ib_pool_fmr *fmr; struct ib_fmr_attr attr = { .max_pages = params->max_pages_per_fmr, - .max_maps = IB_FMR_MAX_REMAPS, + .max_maps = pool->max_remaps, .page_shift = params->page_shift }; @@ -489,7 +513,7 @@ int ib_fmr_pool_unmap(struct ib_pool_fmr *fmr) --fmr->ref_count; if (!fmr->ref_count) { - if (fmr->remap_count < IB_FMR_MAX_REMAPS) { + if (fmr->remap_count < pool->max_remaps) { list_add_tail(&fmr->list, &pool->free_list); } else { list_add_tail(&fmr->list, &pool->dirty_list); |