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RDMA/mlx5: Fix the flow of a miss in the allocation of a cache ODP MR

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[ Upstream commit 2f0e60d5e9f96341a0c8a01be8878cdb3b29ff20 ]

When an ODP MR cache entry is empty and trying to allocate it, increment
the ent->miss counter and call to queue_adjust_cache_locked() to verify
the entry is balanced.

Fixes: aad719dcf3 ("RDMA/mlx5: Allow MRs to be created in the cache synchronously")
Link: https://lore.kernel.org/r/09503e295276dcacc92cb1d8aef1ad0961c99dc1.1644947594.git.leonro@nvidia.com
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Aharon Landau
2022-02-15 19:55:30 +02:00
committed by Greg Kroah-Hartman
parent 279f318bd7
commit e462b0f518
1 changed files with 2 additions and 0 deletions
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2
drivers/infiniband/hw/mlx5/mr.c
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@@ -575,6 +575,8 @@ struct mlx5_ib_mr *mlx5_mr_cache_alloc(struct mlx5_ib_dev *dev,
ent = &cache->ent[entry]; ent = &cache->ent[entry];
spin_lock_irq(&ent->lock); spin_lock_irq(&ent->lock);
if (list_empty(&ent->head)) { if (list_empty(&ent->head)) {
queue_adjust_cache_locked(ent);
ent->miss++;
spin_unlock_irq(&ent->lock); spin_unlock_irq(&ent->lock);
mr = create_cache_mr(ent); mr = create_cache_mr(ent);
if (IS_ERR(mr)) if (IS_ERR(mr))