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13 June 2022, 11:31:42 UTC
Revision 98779be861a05c4cb75bed916df72ec0cba8b53d authored by Steve Wise on 14 May 2009, 21:34:28 UTC, committed by J. Bruce Fields on 27 May 2009, 22:57:24 UTC 
svcrdma: dma unmap the correct length for the RPCRDMA header page.
 
The svcrdma module was incorrectly unmapping the RPCRDMA header page.
On IBM pserver systems this causes a resource leak that results in
running out of bus address space (10 cthon iterations will reproduce it).
The code was mapping the full page but only unmapping the actual header
length.  The fix is to only map the header length.

I also cleaned up the use of ib_dma_map_page() calls since the unmap
logic always uses ib_dma_unmap_single().  I made these symmetrical.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
1 parent 7f42183
History
Tip revision: 98779be861a05c4cb75bed916df72ec0cba8b53d authored by Steve Wise on 14 May 2009, 21:34:28 UTC
svcrdma: dma unmap the correct length for the RPCRDMA header page.
Tip revision: 98779be
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