6.12-stable review patch. If anyone has any objections, please let me know.
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From: Michael Guralnik michaelgur@nvidia.com
[ Upstream commit a0130ef84b00c68ba0b79ee974a0f01459741421 ]
Destroy all previously created cache entries and work queue when rolling back the MR cache initialization upon an error.
Fixes: 73d09b2fe833 ("RDMA/mlx5: Introduce mlx5r_cache_rb_key") Signed-off-by: Michael Guralnik michaelgur@nvidia.com Reviewed-by: Yishai Hadas yishaih@nvidia.com Link: https://patch.msgid.link/c41d525fb3c72e28dd38511bf3aaccb5d584063e.1741875692... Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/hw/mlx5/mr.c | 33 ++++++++++++++++++++++----------- 1 file changed, 22 insertions(+), 11 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index eeb94d1ae60d9..068eac3bdb50b 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -919,6 +919,25 @@ mlx5r_cache_create_ent_locked(struct mlx5_ib_dev *dev, return ERR_PTR(ret); }
+static void mlx5r_destroy_cache_entries(struct mlx5_ib_dev *dev) +{ + struct rb_root *root = &dev->cache.rb_root; + struct mlx5_cache_ent *ent; + struct rb_node *node; + + mutex_lock(&dev->cache.rb_lock); + node = rb_first(root); + while (node) { + ent = rb_entry(node, struct mlx5_cache_ent, node); + node = rb_next(node); + clean_keys(dev, ent); + rb_erase(&ent->node, root); + mlx5r_mkeys_uninit(ent); + kfree(ent); + } + mutex_unlock(&dev->cache.rb_lock); +} + int mlx5_mkey_cache_init(struct mlx5_ib_dev *dev) { struct mlx5_mkey_cache *cache = &dev->cache; @@ -970,6 +989,8 @@ int mlx5_mkey_cache_init(struct mlx5_ib_dev *dev) err: mutex_unlock(&cache->rb_lock); mlx5_mkey_cache_debugfs_cleanup(dev); + mlx5r_destroy_cache_entries(dev); + destroy_workqueue(cache->wq); mlx5_ib_warn(dev, "failed to create mkey cache entry\n"); return ret; } @@ -1003,17 +1024,7 @@ void mlx5_mkey_cache_cleanup(struct mlx5_ib_dev *dev) mlx5_cmd_cleanup_async_ctx(&dev->async_ctx);
/* At this point all entries are disabled and have no concurrent work. */ - mutex_lock(&dev->cache.rb_lock); - node = rb_first(root); - while (node) { - ent = rb_entry(node, struct mlx5_cache_ent, node); - node = rb_next(node); - clean_keys(dev, ent); - rb_erase(&ent->node, root); - mlx5r_mkeys_uninit(ent); - kfree(ent); - } - mutex_unlock(&dev->cache.rb_lock); + mlx5r_destroy_cache_entries(dev);
destroy_workqueue(dev->cache.wq); del_timer_sync(&dev->delay_timer);