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xprtrdma: Introduce rpcrdma_mw_unmap_and_put

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Clean up: Code review suggested that a common bit of code can be
placed into a helper function, and this gives us fewer places to
stick an "I DMA unmapped something" trace point.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever
2017-12-14 20:58:04 -05:00
committed by Anna Schumaker
parent 96ceddea37
commit ec12e479e3
4 changed files with 34 additions and 24 deletions
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28
net/sunrpc/xprtrdma/verbs.c
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@@ -1321,6 +1321,14 @@ out_nomrs:
return NULL;
}
static void
__rpcrdma_mr_put(struct rpcrdma_buffer *buf, struct rpcrdma_mr *mr)
{
spin_lock(&buf->rb_mrlock);
rpcrdma_mr_push(mr, &buf->rb_mrs);
spin_unlock(&buf->rb_mrlock);
}
/**
* rpcrdma_mr_put - Release an rpcrdma_mr object
* @mr: object to release
@@ -1329,12 +1337,22 @@ out_nomrs:
void
rpcrdma_mr_put(struct rpcrdma_mr *mr)
{
struct rpcrdma_xprt *r_xprt = mr->mr_xprt;
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
__rpcrdma_mr_put(&mr->mr_xprt->rx_buf, mr);
}
spin_lock(&buf->rb_mrlock);
rpcrdma_mr_push(mr, &buf->rb_mrs);
spin_unlock(&buf->rb_mrlock);
/**
* rpcrdma_mr_unmap_and_put - DMA unmap an MR and release it
* @mr: object to release
*
*/
void
rpcrdma_mr_unmap_and_put(struct rpcrdma_mr *mr)
{
struct rpcrdma_xprt *r_xprt = mr->mr_xprt;
ib_dma_unmap_sg(r_xprt->rx_ia.ri_device,
mr->mr_sg, mr->mr_nents, mr->mr_dir);
__rpcrdma_mr_put(&r_xprt->rx_buf, mr);
}
static struct rpcrdma_rep *