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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-14 09:34:31 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-14 09:34:31 +0300
commit3a27203102ebfa67bd0bced05b1def499bb59db2 (patch)
tree1dbcb719202b0fe22c143e913f281f49a1b37c3d /arch
parenta24a0eb9c8972803a8707041fc9ed9080cdaf1b9 (diff)
parent4628a64591e6cee181237060961e98c615c33966 (diff)
downloadlinux-3a27203102ebfa67bd0bced05b1def499bb59db2.tar.xz
Merge tag 'libnvdimm-fixes-4.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Dan writes: "libnvdimm/dax 4.19-rc8 * Fix a livelock in dax_layout_busy_page() present since v4.18. The lockup triggers when truncating an actively mapped huge page out of a mapping pinned for direct-I/O. * Fix mprotect() clobbers of _PAGE_DEVMAP. Broken since v4.5 mprotect() clears this flag that is needed to communicate the liveness of device pages to the get_user_pages() path." * tag 'libnvdimm-fixes-4.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: mm: Preserve _PAGE_DEVMAP across mprotect() calls filesystem-dax: Fix dax_layout_busy_page() livelock
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/include/asm/book3s/64/pgtable.h4
-rw-r--r--arch/x86/include/asm/pgtable_types.h2
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 2fdc865ca374..2a2486526d1f 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -114,7 +114,7 @@
*/
#define _HPAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \
_PAGE_ACCESSED | H_PAGE_THP_HUGE | _PAGE_PTE | \
- _PAGE_SOFT_DIRTY)
+ _PAGE_SOFT_DIRTY | _PAGE_DEVMAP)
/*
* user access blocked by key
*/
@@ -132,7 +132,7 @@
*/
#define _PAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \
_PAGE_ACCESSED | _PAGE_SPECIAL | _PAGE_PTE | \
- _PAGE_SOFT_DIRTY)
+ _PAGE_SOFT_DIRTY | _PAGE_DEVMAP)
#define H_PTE_PKEY (H_PTE_PKEY_BIT0 | H_PTE_PKEY_BIT1 | H_PTE_PKEY_BIT2 | \
H_PTE_PKEY_BIT3 | H_PTE_PKEY_BIT4)
diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
index b64acb08a62b..106b7d0e2dae 100644
--- a/arch/x86/include/asm/pgtable_types.h
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -124,7 +124,7 @@
*/
#define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \
_PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY | \
- _PAGE_SOFT_DIRTY)
+ _PAGE_SOFT_DIRTY | _PAGE_DEVMAP)
#define _HPAGE_CHG_MASK (_PAGE_CHG_MASK | _PAGE_PSE)
/*