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IB/iser: Remove dead code in fmr_pool alloc/free

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In the past the we always tried to allocate an fmr_pool
and if it failed on ENOSYS (not supported) then we continued
with dma mr. This is not the case anymore and if we tried to
allocate an fmr_pool then it is supported and we expect to succeed.

Also, the check if fmr_pool is allocated when free is called is
redundant as well as we are guaranteed it exists.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg 2015-08-06 18:32:55 +03:00 committed by Doug Ledford
parent 5190cc2664
commit 8c18ed03a9
1 changed files with 10 additions and 16 deletions
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26
drivers/infiniband/ulp/iser/iser_verbs.c
View file

@ -244,22 +244,18 @@ int iser_create_fmr_pool(struct ib_conn *ib_conn, unsigned cmds_max)
IB_ACCESS_REMOTE_READ);
ib_conn->fmr.pool = ib_create_fmr_pool(device->pd, &params);
if (!IS_ERR(ib_conn->fmr.pool))
return 0;
if (IS_ERR(ib_conn->fmr.pool)) {
ret = PTR_ERR(ib_conn->fmr.pool);
iser_err("FMR allocation failed, err %d\n", ret);
goto err;
}
/* no FMR => no need for page_vec */
return 0;
err:
kfree(ib_conn->fmr.page_vec);
ib_conn->fmr.page_vec = NULL;
ret = PTR_ERR(ib_conn->fmr.pool);
ib_conn->fmr.pool = NULL;
if (ret != -ENOSYS) {
iser_err("FMR allocation failed, err %d\n", ret);
return ret;
} else {
iser_warn("FMRs are not supported, using unaligned mode\n");
return 0;
}
return ret;
}
/**
@ -270,9 +266,7 @@ void iser_free_fmr_pool(struct ib_conn *ib_conn)
iser_info("freeing conn %p fmr pool %p\n",
ib_conn, ib_conn->fmr.pool);
if (ib_conn->fmr.pool != NULL)
ib_destroy_fmr_pool(ib_conn->fmr.pool);
ib_destroy_fmr_pool(ib_conn->fmr.pool);
ib_conn->fmr.pool = NULL;
kfree(ib_conn->fmr.page_vec);