system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-08 04:12:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

RDMA/hfi1: Remove use of kmap()

Browse source 
kmap() is being deprecated and will break uses of device dax after PKS
protection is introduced.[1]

The kmap() used in sdma does not need to be global.  Use the new
kmap_local_page() which works with PKS and may provide better performance
for this thread local mapping anyway.

[1] https://lore.kernel.org/lkml/20201009195033.3208459-59-ira.weiny@intel.com/

Link: https://lore.kernel.org/r/20210622061422.2633501-2-ira.weiny@intel.com
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Ira Weiny 2021-06-21 23:14:19 -07:00 committed by Jason Gunthorpe
parent 7364e74d48
commit 36f5625af3
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/infiniband/hw/hfi1/sdma.c
View file

@ -3130,7 +3130,7 @@ int ext_coal_sdma_tx_descs(struct hfi1_devdata *dd, struct sdma_txreq *tx,
}
if (type == SDMA_MAP_PAGE) {
kvaddr = kmap(page);
kvaddr = kmap_local_page(page);
kvaddr += offset;
} else if (WARN_ON(!kvaddr)) {
__sdma_txclean(dd, tx);
@ -3140,7 +3140,7 @@ int ext_coal_sdma_tx_descs(struct hfi1_devdata *dd, struct sdma_txreq *tx,
memcpy(tx->coalesce_buf + tx->coalesce_idx, kvaddr, len);
tx->coalesce_idx += len;
if (type == SDMA_MAP_PAGE)
kunmap(page);
kunmap_local(kvaddr);
/* If there is more data, return */
if (tx->tlen - tx->coalesce_idx)