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authorDan Williams <dan.j.williams@intel.com>2016-06-17 21:08:06 +0300
committerDan Williams <dan.j.williams@intel.com>2016-06-24 21:39:29 +0300
commitf295e53b60eb93ee53ed5ac610374ed293caa57b (patch)
tree93f09f9113c4efa1704833671557c0230dab9b75 /include/linux/pfn_t.h
parente02fb7264d8a31dddb9a80fbde603feb502d6478 (diff)
downloadlinux-f295e53b60eb93ee53ed5ac610374ed293caa57b.tar.xz
libnvdimm, pmem: allow nfit_test to override pmem_direct_access()
Currently phys_to_pfn_t() is an exported symbol to allow nfit_test to override it and indicate that nfit_test-pmem is not device-mapped. Now, we want to enable nfit_test to operate without DMA_CMA and the pmem it provides will no longer be physically contiguous, i.e. won't be capable of supporting direct_access requests larger than a page. Make pmem_direct_access() a weak symbol so that it can be replaced by the tools/testing/nvdimm/ version, and move phys_to_pfn_t() to a static inline now that it no longer needs to be overridden. Acked-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux/pfn_t.h')
-rw-r--r--include/linux/pfn_t.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/pfn_t.h b/include/linux/pfn_t.h
index 94994810c7c0..a3d90b9da18d 100644
--- a/include/linux/pfn_t.h
+++ b/include/linux/pfn_t.h
@@ -28,7 +28,10 @@ static inline pfn_t pfn_to_pfn_t(unsigned long pfn)
return __pfn_to_pfn_t(pfn, 0);
}
-extern pfn_t phys_to_pfn_t(phys_addr_t addr, u64 flags);
+static inline pfn_t phys_to_pfn_t(phys_addr_t addr, u64 flags)
+{
+ return __pfn_to_pfn_t(addr >> PAGE_SHIFT, flags);
+}
static inline bool pfn_t_has_page(pfn_t pfn)
{