RDMA/core: Add aging to FRMR pools

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Add aging mechanism to handles of FRMR pools.
Keep the handles stored in FRMR pools for at least 1 minute for
application to reuse, destroy all handles which were not reused.

Add a new queue to each pool to accomplish that.
Upon aging trigger, destroy all FRMR handles from the new 'inactive'
queue and move all handles from the 'active' pool to the 'inactive' pool.
This ensures all destroyed handles were not reused for at least one aging
time period and were not held longer than 2 aging time periods.
Handles from the inactive queue will be popped only if the active queue is
empty.

Signed-off-by: Michael Guralnik <michaelgur@nvidia.com>
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>
Link: https://patch.msgid.link/20260226-frmr_pools-v4-3-95360b54f15e@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

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Michael Guralnik 2026-02-26 15:52:08 +02:00 • committed by Leon Romanovsky

parent ce5df0b891

commit 84cb1dd06f

2 changed files with 81 additions and 8 deletions

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82

drivers/infiniband/core/frmr_pools.c

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7

drivers/infiniband/core/frmr_pools.h

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