Dan Williams 09135cc594 mm, powerpc: use vma_kernel_pagesize() in vma_mmu_pagesize() ... Patch series "mm, smaps: MMUPageSize for device-dax", v3. Similar to commit 31383c6865 ("mm, hugetlbfs: introduce ->split() to vm_operations_struct") here is another occasion where we want special-case hugetlbfs/hstate enabling to also apply to device-dax. This prompts the question what other hstate conversions we might do beyond ->split() and ->pagesize(), but this appears to be the last of the usages of hstate_vma() in generic/non-hugetlbfs specific code paths. This patch (of 3): The current powerpc definition of vma_mmu_pagesize() open codes looking up the page size via hstate. It is identical to the generic vma_kernel_pagesize() implementation. Now, vma_kernel_pagesize() is growing support for determining the page size of Device-DAX vmas in addition to the existing Hugetlbfs page size determination. Ideally, if the powerpc vma_mmu_pagesize() used vma_kernel_pagesize() it would automatically benefit from any new vma-type support that is added to vma_kernel_pagesize(). However, the powerpc vma_mmu_pagesize() is prevented from calling vma_kernel_pagesize() due to a circular header dependency that requires vma_mmu_pagesize() to be defined before including <linux/hugetlb.h>. Break this circular dependency by defining the default vma_mmu_pagesize() as a __weak symbol to be overridden by the powerpc version. Link: http://lkml.kernel.org/r/151996254179.27922.2213728278535578744.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Jane Chu <jane.chu@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2018-04-05 21:36:26 -07:00
..
boot	kbuild: Use ls(1) instead of stat(1) to obtain file size	2018-03-26 02:01:24 +09:00
configs	powerpc updates for 4.16	2018-02-02 10:01:04 -08:00
crypto	crypto: hash - annotate algorithms taking optional key	2018-01-12 23:03:35 +11:00
include	mm, powerpc: use vma_kernel_pagesize() in vma_mmu_pagesize()	2018-04-05 21:36:26 -07:00
kernel	Kbuild updates for v4.17	2018-04-03 15:51:22 -07:00
kvm	KVM fixes for v4.16-rc8	2018-03-30 07:24:14 -10:00
lib	Merge branch 'fixes' into next	2018-01-21 23:21:14 +11:00
math-emu
mm	mm, powerpc: use vma_kernel_pagesize() in vma_mmu_pagesize()	2018-04-05 21:36:26 -07:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-03-05 11:29:24 -08:00
oprofile
perf	perf: Fix sibling iteration	2018-03-16 20:44:12 +01:00
platforms	Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-02-25 16:27:51 -08:00
purgatory
sysdev	powerpc/xive: Use hw CPU ids when configuring the CPU queues	2018-02-15 09:54:43 +11:00
tools
xmon	powerpc/64s: Improve RFI L1-D cache flush fallback	2018-01-23 16:16:33 +11:00
Kconfig	Merge branch 'linus' into sched/urgent, to resolve conflicts	2018-02-06 21:12:31 +01:00
Kconfig.debug	powerpc: Add new kconfig CONFIG_PPC_IRQ_SOFT_MASK_DEBUG	2018-01-19 22:37:03 +11:00
Makefile	powerpc/modules: Fix alignment of .toc section in kernel modules	2017-12-11 13:03:35 +11:00
Makefile.postlink