diff options
| author | Michael Guralnik <michaelgur@nvidia.com> | 2026-06-10 03:01:44 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2026-06-11 15:36:09 -0300 |
| commit | ddbc251be18fb82884ee6e9af634cc9f1171a4d6 (patch) | |
| tree | b671dfa175c8be023d12be0efee7fd4ea9352584 /include/rdma | |
| parent | 8c76126b866649d8e8acc09a06f2b03b6ff88900 (diff) | |
RDMA/core: Add ib_frmr_pool_drop for unrecoverable handles
A driver that has popped a handle from an FRMR pool can hit failures
that leave the handle in a state where it can't safely be returned
for reuse. The driver destroys the handle itself, but the pool has
no way to learn about it, so the in_use counter drifts upward.
Add ib_frmr_pool_drop to balance the pool's accounting in this case.
Every pop is now balanced by exactly one push or drop.
Fixes: 36680ef7bceb ("RDMA/mlx5: Switch from MR cache to FRMR pools")
Link: https://patch.msgid.link/r/20260610000145.820592-9-michaelgur@nvidia.com
Signed-off-by: Michael Guralnik <michaelgur@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/frmr_pools.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/rdma/frmr_pools.h b/include/rdma/frmr_pools.h index 5b57bafa3636..aed4d69d3841 100644 --- a/include/rdma/frmr_pools.h +++ b/include/rdma/frmr_pools.h @@ -35,5 +35,6 @@ int ib_frmr_pools_init(struct ib_device *device, void ib_frmr_pools_cleanup(struct ib_device *device); int ib_frmr_pool_pop(struct ib_device *device, struct ib_mr *mr); void ib_frmr_pool_push(struct ib_device *device, struct ib_mr *mr); +void ib_frmr_pool_drop(struct ib_mr *mr); #endif /* FRMR_POOLS_H */ |