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IB/srp: fix mr allocation when the device supports sg gaps

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If the device support arbitrary sg list mapping (device cap
IB_DEVICE_SG_GAPS_REG set) we allocate the memory regions with
IB_MR_TYPE_SG_GAPS.

Fixes: 509c5f33f4 ("IB/srp: Prevent mapping failures")
Cc: <stable@vger.kernel.org> # 4.7+
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Israel Rukshin 2016-12-28 12:48:28 +02:00 committed by Doug Ledford
parent 3bcf96e018
commit ad8e66b4a8
1 changed files with 7 additions and 2 deletions
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9
drivers/infiniband/ulp/srp/ib_srp.c
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@ -371,6 +371,7 @@ static struct srp_fr_pool *srp_create_fr_pool(struct ib_device *device,
struct srp_fr_desc *d;
struct ib_mr *mr;
int i, ret = -EINVAL;
enum ib_mr_type mr_type;
if (pool_size <= 0)
goto err;
@ -384,9 +385,13 @@ static struct srp_fr_pool *srp_create_fr_pool(struct ib_device *device,
spin_lock_init(&pool->lock);
INIT_LIST_HEAD(&pool->free_list);
if (device->attrs.device_cap_flags & IB_DEVICE_SG_GAPS_REG)
mr_type = IB_MR_TYPE_SG_GAPS;
else
mr_type = IB_MR_TYPE_MEM_REG;
for (i = 0, d = &pool->desc[0]; i < pool->size; i++, d++) {
mr = ib_alloc_mr(pd, IB_MR_TYPE_MEM_REG,
max_page_list_len);
mr = ib_alloc_mr(pd, mr_type, max_page_list_len);
if (IS_ERR(mr)) {
ret = PTR_ERR(mr);
if (ret == -ENOMEM)