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authorDan Williams <dan.j.williams@intel.com>2018-12-28 11:39:46 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-12-28 23:11:52 +0300
commit063a7d1d3623db31ca5d2309cab6030ebf93b72f (patch)
treedb21d6e0f9a623faa40bc2d9ac2dc1f43f5ba9a5 /mm/hmm.c
parentc86aa7bbfd5568ba8a82d3635d8f7b8a8e06fe54 (diff)
downloadlinux-063a7d1d3623db31ca5d2309cab6030ebf93b72f.tar.xz
mm/hmm: fix memremap.h, move dev_page_fault_t callback to hmm
The kbuild robot reported the following on a development branch that used memremap.h in a new path: In file included from arch/m68k/include/asm/pgtable_mm.h:148:0, from arch/m68k/include/asm/pgtable.h:5, from include/linux/memremap.h:7, from drivers//dax/bus.c:3: arch/m68k/include/asm/motorola_pgtable.h: In function 'pgd_offset': >> arch/m68k/include/asm/motorola_pgtable.h:199:11: error: dereferencing pointer to incomplete type 'const struct mm_struct' return mm->pgd + pgd_index(address); ^~ The ->page_fault() callback is specific to HMM. Move it to 'struct hmm_devmem' where the unusual asm/pgtable.h dependency can be contained in include/linux/hmm.h. Longer term refactoring this dependency out of HMM is recommended, but in the meantime memremap.h remains generic. Link: http://lkml.kernel.org/r/154534090899.3120190.6652620807617715272.stgit@dwillia2-desk3.amr.corp.intel.com Fixes: 5042db43cc26 ("mm/ZONE_DEVICE: new type of ZONE_DEVICE memory...") Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: "Jérôme Glisse" <jglisse@redhat.com> Cc: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/hmm.c')
-rw-r--r--mm/hmm.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/hmm.c b/mm/hmm.c
index 789587731217..a04e4b810610 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -1087,10 +1087,10 @@ struct hmm_devmem *hmm_devmem_add(const struct hmm_devmem_ops *ops,
devmem->pfn_first = devmem->resource->start >> PAGE_SHIFT;
devmem->pfn_last = devmem->pfn_first +
(resource_size(devmem->resource) >> PAGE_SHIFT);
+ devmem->page_fault = hmm_devmem_fault;
devmem->pagemap.type = MEMORY_DEVICE_PRIVATE;
devmem->pagemap.res = *devmem->resource;
- devmem->pagemap.page_fault = hmm_devmem_fault;
devmem->pagemap.page_free = hmm_devmem_free;
devmem->pagemap.altmap_valid = false;
devmem->pagemap.ref = &devmem->ref;
@@ -1141,10 +1141,10 @@ struct hmm_devmem *hmm_devmem_add_resource(const struct hmm_devmem_ops *ops,
devmem->pfn_first = devmem->resource->start >> PAGE_SHIFT;
devmem->pfn_last = devmem->pfn_first +
(resource_size(devmem->resource) >> PAGE_SHIFT);
+ devmem->page_fault = hmm_devmem_fault;
devmem->pagemap.type = MEMORY_DEVICE_PUBLIC;
devmem->pagemap.res = *devmem->resource;
- devmem->pagemap.page_fault = hmm_devmem_fault;
devmem->pagemap.page_free = hmm_devmem_free;
devmem->pagemap.altmap_valid = false;
devmem->pagemap.ref = &devmem->ref;