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Subject[PATCH] ib_srpt: use kvmalloc to allocate ring pointers
Date
An array of pointers to SRPT contexts in ib_device is over 30KiB even
in default case, in which an amount of contexts is 4095. The patch
is intended to weed out large contigous allocation for non-DMA memory.

Signed-off-by: Jan Dakinevich <jan.dakinevich@virtuozzo.com>
---
drivers/infiniband/ulp/srpt/ib_srpt.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 3081c62..de167af 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -720,7 +720,7 @@ static struct srpt_ioctx **srpt_alloc_ioctx_ring(struct srpt_device *sdev,
WARN_ON(ioctx_size != sizeof(struct srpt_recv_ioctx)
&& ioctx_size != sizeof(struct srpt_send_ioctx));

- ring = kmalloc_array(ring_size, sizeof(ring[0]), GFP_KERNEL);
+ ring = kvmalloc_array(ring_size, sizeof(ring[0]), GFP_KERNEL);
if (!ring)
goto out;
for (i = 0; i < ring_size; ++i) {
@@ -734,7 +734,7 @@ static struct srpt_ioctx **srpt_alloc_ioctx_ring(struct srpt_device *sdev,
err:
while (--i >= 0)
srpt_free_ioctx(sdev, ring[i], dma_size, dir);
- kfree(ring);
+ kvfree(ring);
ring = NULL;
out:
return ring;
@@ -759,7 +759,7 @@ static void srpt_free_ioctx_ring(struct srpt_ioctx **ioctx_ring,

for (i = 0; i < ring_size; ++i)
srpt_free_ioctx(sdev, ioctx_ring[i], dma_size, dir);
- kfree(ioctx_ring);
+ kvfree(ioctx_ring);
}

/**
--
2.1.4
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