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RDMA/iser: Fix possible mr leak on device removal event

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When the rdma device is removed, we must cleanup all
the rdma resources within the DEVICE_REMOVAL event
handler to let the device teardown gracefully. When
this happens with live I/O, some memory regions are
occupied. Thus, track them too and dereg all the mr's.

We are safe with mr access by iscsi_iser_cleanup_task.

Reported-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg
2017-02-27 20:16:33 +02:00
committed by Doug Ledford
parent b7363e67b2
commit ea174c9573
2 changed files with 7 additions and 3 deletions
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2
drivers/infiniband/ulp/iser/iscsi_iser.h
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@@ -430,6 +430,7 @@ struct iser_fr_desc {
struct list_head list;
struct iser_reg_resources rsc;
struct iser_pi_context *pi_ctx;
struct list_head all_list;
};
/**
@@ -443,6 +444,7 @@ struct iser_fr_pool {
struct list_head list;
spinlock_t lock;
int size;
struct list_head all_list;
};
/**