linux-stable/arch/sh/mm
Kirill A. Shutemov e1534ae950 mm: differentiate page_mapped() from page_mapcount() for compound pages
Let's define page_mapped() to be true for compound pages if any
sub-pages of the compound page is mapped (with PMD or PTE).

On other hand page_mapcount() return mapcount for this particular small
page.

This will make cases like page_get_anon_vma() behave correctly once we
allow huge pages to be mapped with PTE.

Most users outside core-mm should use page_mapcount() instead of
page_mapped().

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Tested-by: Sasha Levin <sasha.levin@oracle.com>
Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Jerome Marchand <jmarchan@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Steve Capper <steve.capper@linaro.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.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
..
alignment.c procfs: new helper - PDE_DATA(inode) 2013-04-09 14:13:32 -04:00
asids-debugfs.c arch/sh/mm/asids-debugfs.c: use PTR_ERR_OR_ZERO 2014-08-06 18:01:12 -07:00
cache-debugfs.c sh: prefix sh-specific "CCR" and "CCR2" by "SH_" 2014-03-04 07:55:49 -08:00
cache-sh2.c sh: prefix sh-specific "CCR" and "CCR2" by "SH_" 2014-03-04 07:55:49 -08:00
cache-sh2a.c sh: prefix sh-specific "CCR" and "CCR2" by "SH_" 2014-03-04 07:55:49 -08:00
cache-sh3.c sh: Mass ctrl_in/outX to __raw_read/writeX conversion. 2010-01-26 12:58:40 +09:00
cache-sh4.c mm: differentiate page_mapped() from page_mapcount() for compound pages 2016-01-15 17:56:32 -08:00
cache-sh5.c tree-wide: fix comment/printk typos 2010-11-01 15:38:34 -04:00
cache-sh7705.c sh: Assume new page cache pages have dirty dcache lines. 2010-12-01 15:39:51 +09:00
cache-shx3.c sh: prefix sh-specific "CCR" and "CCR2" by "SH_" 2014-03-04 07:55:49 -08:00
cache.c mm: differentiate page_mapped() from page_mapcount() for compound pages 2016-01-15 17:56:32 -08:00
consistent.c SH: adapt for dma_map_ops changes 2012-03-28 16:36:37 +02:00
extable_32.c
extable_64.c
fault.c mm/fault, arch: Use pagefault_disable() to check for disabled pagefaults in the handler 2015-05-19 08:39:15 +02:00
flush-sh4.c sh: fix up fallout from system.h disintegration. 2012-03-30 19:29:57 +09:00
gup.c Tighten rules for ACCESS_ONCE 2015-02-14 10:54:28 -08:00
hugetlbpage.c mm/hugetlb: reduce arch dependent code about huge_pmd_unshare 2015-06-24 17:49:41 -07:00
init.c libnvdimm for 4.3: 2015-09-08 14:35:59 -07:00
ioremap.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ioremap_fixed.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
Kconfig memblock: kill "config MAX_ACTIVE_REGIONS" 2013-04-18 13:03:53 +10:00
kmap.c sh: Assume new page cache pages have dirty dcache lines. 2010-12-01 15:39:51 +09:00
Makefile sh64: Fix up caller-save register settings for fast-path. 2012-05-14 16:46:07 +09:00
mmap.c Merge branch 'akpm' (Andrew's patchbomb) 2012-12-11 18:05:37 -08:00
nommu.c sh: stub __flush_tlb_global() definition for nommu. 2010-08-16 14:53:01 +09:00
numa.c sh: use PFN_DOWN macro 2015-09-04 16:54:41 -07:00
pgtable.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pmb.c Disintegrate asm/system.h for SH 2012-03-28 18:30:03 +01:00
sram.c sh: fix up fallout from system.h disintegration. 2012-03-30 19:29:57 +09:00
tlb-debugfs.c sh: provide generic arch_debugfs_dir. 2010-09-24 04:04:26 +09:00
tlb-pteaex.c Disintegrate asm/system.h for SH 2012-03-28 18:30:03 +01:00
tlb-sh3.c Disintegrate asm/system.h for SH 2012-03-28 18:30:03 +01:00
tlb-sh4.c Disintegrate asm/system.h for SH 2012-03-28 18:30:03 +01:00
tlb-sh5.c sh: delete __cpuinit usage from all sh files 2013-07-14 19:36:53 -04:00
tlb-urb.c sh: update the TLB replacement counter for entry wiring. 2010-03-26 11:37:16 +09:00
tlbex_32.c sh: Enable shared page fault handler for _32/_64. 2012-05-14 15:33:28 +09:00
tlbex_64.c sh64: Set additional fault code values. 2012-05-14 17:46:49 +09:00
tlbflush_32.c sh: Provide a global TLB flush for U/I-TLB clear. 2010-07-02 15:44:09 +09:00
tlbflush_64.c sh64: Migrate to __update_tlb() API. 2012-05-14 15:52:28 +09:00
uncached.c sh: nommu: use 32-bit phys mode. 2010-11-04 12:32:24 +09:00