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| author |   David S. Miller <davem@davemloft.net> | 2020-01-21 10:22:51 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-01-21 10:22:51 +0100 |
| commit | ad063075d406dd04d2d9bc1005161a5a08fb38c5 (patch) | |
| tree | ceca9e3059278203dd2d13d3ad96b13f867ab979 /include/rdma/ib_umem.h | |
| parent | Merge branch 'mlxsw-SPAN-egress-mirroring-buffer-size' (diff) | |
| parent | net/rds: Use prefetch for On-Demand-Paging MR (diff) | |
| download | linux-dev-ad063075d406dd04d2d9bc1005161a5a08fb38c5.tar.xz linux-dev-ad063075d406dd04d2d9bc1005161a5a08fb38c5.zip | |
Merge tag 'rds-odp-for-5.5' of https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma
Leon Romanovsky says:
====================
Use ODP MRs for kernel ULPs
The following series extends MR creation routines to allow creation of
user MRs through kernel ULPs as a proxy. The immediate use case is to
allow RDS to work over FS-DAX, which requires ODP (on-demand-paging)
MRs to be created and such MRs were not possible to create prior this
series.
The first part of this patchset extends RDMA to have special verb
ib_reg_user_mr(). The common use case that uses this function is a
userspace application that allocates memory for HCA access but the
responsibility to register the memory at the HCA is on an kernel ULP.
This ULP acts as an agent for the userspace application.
The second part provides advise MR functionality for ULPs. This is
integral part of ODP flows and used to trigger pagefaults in advance
to prepare memory before running working set.
The third part is actual user of those in-kernel APIs.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/rdma/ib_umem.h')
| -rw-r--r-- | include/rdma/ib_umem.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h index 753f54e17e0a..e3518fd6b95b 100644 --- a/include/rdma/ib_umem.h +++ b/include/rdma/ib_umem.h @@ -69,7 +69,7 @@ static inline size_t ib_umem_num_pages(struct ib_umem *umem) #ifdef CONFIG_INFINIBAND_USER_MEM -struct ib_umem *ib_umem_get(struct ib_udata *udata, unsigned long addr, +struct ib_umem *ib_umem_get(struct ib_device *device, unsigned long addr, size_t size, int access); void ib_umem_release(struct ib_umem *umem); int ib_umem_page_count(struct ib_umem *umem); @@ -83,7 +83,7 @@ unsigned long ib_umem_find_best_pgsz(struct ib_umem *umem, #include <linux/err.h> -static inline struct ib_umem *ib_umem_get(struct ib_udata *udata, +static inline struct ib_umem *ib_umem_get(struct ib_device *device, unsigned long addr, size_t size, int access) { |