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Dan Williams 34c0fd540e mm, dax, pmem: introduce pfn_t 
For the purpose of communicating the optional presence of a 'struct
page' for the pfn returned from ->direct_access(), introduce a type that
encapsulates a page-frame-number plus flags.  These flags contain the
historical "page_link" encoding for a scatterlist entry, but can also
denote "device memory".  Where "device memory" is a set of pfns that are
not part of the kernel's linear mapping by default, but are accessed via
the same memory controller as ram.

The motivation for this new type is large capacity persistent memory
that needs struct page entries in the 'memmap' to support 3rd party DMA
(i.e.  O_DIRECT I/O with a persistent memory source/target).  However,
we also need it in support of maintaining a list of mapped inodes which
need to be unmapped at driver teardown or freeze_bdev() time.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Hansen <dave@sr71.net>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2016-01-15 17:56:32 -08:00
..
ge genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
xics powerpc, irq: Use access helper irq_data_get_affinity_mask() 2015-09-15 17:06:28 +02:00
6xx-suspend.S powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly 2012-07-11 14:18:22 +10:00
Kconfig powerpc: Added PCI MSI support using the HSTA module 2014-05-01 08:26:30 +10:00
Makefile QE: Move QE from arch/powerpc to drivers/soc 2015-12-22 17:12:56 -06:00
axonram.c mm, dax, pmem: introduce pfn_t 2016-01-15 17:56:32 -08:00
cpm1.c powerpc: Mark low level irq handlers NO_THREAD 2013-06-20 16:55:08 +10:00
cpm2.c
…
cpm2_pic.c powerpc/cpm2: Use irq_set_handler_locked() 2015-09-16 15:43:10 +02:00
cpm2_pic.h
…
cpm_common.c QE: Move QE from arch/powerpc to drivers/soc 2015-12-22 17:12:56 -06:00
dart.h
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dart_iommu.c powerpc/iommu: Cleanup setting of DMA base/offset 2015-07-13 10:10:55 +10:00
dcr-low.S
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dcr.c powerpc: Use bool function return values of true/false not 1/0 2015-03-31 14:19:47 +11:00
ehv_pic.c irqdomain: Use irq_domain_get_of_node() instead of direct field access 2015-10-13 19:01:23 +02:00
fsl_85xx_cache_ctlr.h powerpc/85xx: Fix sram_offset parameter type 2012-07-26 13:24:32 -05:00
fsl_85xx_cache_sram.c powerpc/85xx: Fix compiler error with THIS_MODULE and related 2012-03-16 14:50:25 -05:00
fsl_85xx_l2ctlr.c powerpc: sysdev: drop owner assignment from platform_drivers 2014-10-20 16:20:13 +02:00
fsl_gtm.c Merge remote-tracking branch 'grant/devicetree/next' into for-next 2013-11-07 10:34:46 -06:00
fsl_lbc.c powerpc/fsl_lbc: removal of dead code 2015-12-23 15:02:00 -06:00
fsl_mpic_err.c powerpc/mpic: FSL MPIC error interrupt support. 2012-09-12 14:57:10 -05:00
fsl_mpic_timer_wakeup.c powerpc/fsl: add MPIC timer wakeup support 2013-07-01 18:38:42 -05:00
fsl_msi.c irqdomain: Use irq_domain_get_of_node() instead of direct field access 2015-10-13 19:01:23 +02:00
fsl_msi.h powerpc/85xx: workaround for chips with MSI hardware errata 2015-03-23 19:51:18 -05:00
fsl_pci.c powerpc updates for 4.5 2016-01-15 13:18:47 -08:00
fsl_pci.h EDAC, mpc85xx: Make mpc85xx-pci-edac a platform device 2015-12-11 16:56:16 +01:00
fsl_pmc.c powerpc: sysdev: drop owner assignment from platform_drivers 2014-10-20 16:20:13 +02:00
fsl_rio.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
fsl_rio.h powerpc/fsl-rio: add support for mapping inbound windows 2014-11-12 23:56:16 -06:00
fsl_rmu.c powerpc/rmu: Fix the error memory free parameters 2014-05-22 18:08:13 -05:00
fsl_soc.c powerpc/fsl: fsl_soc: delete unneeded test before of_node_put 2014-11-10 09:59:34 +11:00
fsl_soc.h powerpc/mpc512x: remove unnecessary #if 2013-10-30 22:56:10 +01:00
grackle.c powerpc: rename ppc_pci_*_flags to pci_*_flags 2011-07-12 09:28:04 -05:00
i8259.c irqdomain: Use irq_domain_get_of_node() instead of direct field access 2015-10-13 19:01:23 +02:00
indirect_pci.c powerpc/fsl_pci: Fix pci stack build bug with FRAME_WARN 2015-01-29 19:56:15 -06:00
ipic.c irqdomain: Use irq_domain_get_of_node() instead of direct field access 2015-10-13 19:01:23 +02:00
ipic.h irq_domain/powerpc: Use common irq_domain structure instead of irq_host 2012-02-14 14:06:50 -07:00
micropatch.c powerpc/8xx: Remove empty asm/mpc8xx.h 2014-06-25 18:49:40 -05:00
mmio_nvram.c treewide: Convert uses of struct resource to resource_size(ptr) 2011-06-10 14:55:36 +02:00
mpc5xxx_clocks.c powerpc/mpc5xxx: Use of_get_next_parent to simplify code 2015-10-15 20:32:01 +11:00
mpc8xx_pic.c powerpc/8xx: Shorten irq_chip name for the SIU 2015-10-06 21:54:42 +11:00
mpc8xx_pic.h
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mpic.c powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
mpic.h powerpc/pasemi: Only the build the pasemi MSI code for PASEMI=y 2015-05-11 19:55:25 +10:00
mpic_msgr.c powerpc: sysdev: drop owner assignment from platform_drivers 2014-10-20 16:20:13 +02:00
mpic_msi.c irqdomain: Use irq_domain_get_of_node() instead of direct field access 2015-10-13 19:01:23 +02:00
mpic_timer.c powerpc/mpic_timer: fix convert ticks to time subtraction overflow 2014-01-09 17:52:14 -06:00
mpic_u3msi.c powerpc/MSI: Fix race condition in tearing down MSI interrupts 2015-09-10 17:27:08 +10:00
msi_bitmap.c powerpc/msi: Fix section mismatch warning in msi_bitmap_alloc() 2015-10-28 12:08:33 +09:00
mv64x60.h
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mv64x60_dev.c powerpc: make of_device_ids const 2014-09-25 23:14:46 +10:00
mv64x60_pci.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mv64x60_pic.c powerpc: Constify irq_domain_ops 2015-05-11 16:58:20 +10:00
mv64x60_udbg.c dt/bindings: Remove device_type "serial" from marvell,mv64360-mpsc 2014-01-16 16:31:31 +00:00
of_rtc.c powerpc: add explicit OF includes 2013-10-09 20:04:11 -05:00
pmi.c powerpc: sysdev: drop owner assignment from platform_drivers 2014-10-20 16:20:13 +02:00
ppc4xx_cpm.c powerpc/4xx/cpm: delete unneeded test before of_node_put 2014-11-10 09:59:34 +11:00
ppc4xx_gpio.c
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ppc4xx_hsta_msi.c powerpc updates for 4.3 2015-09-03 16:41:38 -07:00
ppc4xx_msi.c powerpc/MSI: Fix race condition in tearing down MSI interrupts 2015-09-10 17:27:08 +10:00
ppc4xx_ocm.c powerpc/44x: Fix ocm_block allocation 2013-12-10 11:25:04 +11:00
ppc4xx_pci.c powerpc: Remove superfluous bootmem includes 2014-11-10 09:59:26 +11:00
ppc4xx_pci.h powerpc/476fpe: Add 476fpe SoC code 2011-12-09 07:51:02 -05:00
ppc4xx_soc.c powerpc: add explicit OF includes 2013-10-09 20:04:11 -05:00
rtc_cmos_setup.c PTR_RET is now PTR_ERR_OR_ZERO(): Replace most. 2013-07-15 11:25:01 +09:30
scom.c powerpc/scom: Improve debugfs interface 2013-11-06 14:13:50 +11:00
simple_gpio.c powerpc: remove non-required uses of include <linux/module.h> 2011-10-31 19:30:44 -04:00
simple_gpio.h
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tsi108_dev.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
tsi108_pci.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
udbg_memcons.c powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
uic.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
xilinx_intc.c genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
xilinx_pci.c powerpc: make of_device_ids const 2014-09-25 23:14:46 +10:00