The patch titled
Subject: dax: revert userfaultfd change
has been removed from the -mm tree. Its filename was
dax-revert-userfaultfd-change.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: dax: revert userfaultfd change
Undo the change which "userfaultfd: call handle_userfault() for
userfaultfd_missing() faults" made to set_huge_zero_page(). DAX will need
that return value.
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff -puN mm/huge_memory.c~dax-revert-userfaultfd-change mm/huge_memory.c
--- a/mm/huge_memory.c~dax-revert-userfaultfd-change
+++ a/mm/huge_memory.c
@@ -794,16 +794,19 @@ static inline gfp_t alloc_hugepage_gfpma
}
/* Caller must hold page table lock. */
-static void set_huge_zero_page(pgtable_t pgtable, struct mm_struct *mm,
+static bool set_huge_zero_page(pgtable_t pgtable, struct mm_struct *mm,
struct vm_area_struct *vma, unsigned long haddr, pmd_t *pmd,
struct page *zero_page)
{
pmd_t entry;
+ if (!pmd_none(*pmd))
+ return false;
entry = mk_pmd(zero_page, vma->vm_page_prot);
entry = pmd_mkhuge(entry);
pgtable_trans_huge_deposit(mm, pmd, pgtable);
set_pmd_at(mm, haddr, pmd, entry);
atomic_long_inc(&mm->nr_ptes);
+ return true;
}
int do_huge_pmd_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
arch-alpha-kernel-systblss-remove-debug-check.patch
drivers-gpu-drm-i915-intel_spritec-fix-build.patch
drivers-gpu-drm-i915-intel_tvc-fix-build.patch
mm.patch
mm-srcu-ify-shrinkers-fix-fix.patch
include-linux-page-flagsh-rename-macros-to-avoid-collisions.patch
proc-add-kpageidle-file-fix-6-fix.patch
proc-add-kpageidle-file-fix-6-fix-2-fix.patch
proc-export-idle-flag-via-kpageflags-fix.patch
x86-add-pmd_-for-thp-fix.patch
sparc-add-pmd_-for-thp-fix.patch
mm-support-madvisemadv_free-fix-2.patch
mm-dont-split-thp-page-when-syscall-is-called-fix-3.patch
mm-move-lazy-free-pages-to-inactive-list-fix-fix.patch
procfs-always-expose-proc-pid-map_files-and-make-it-readable-fix.patch
procfs-always-expose-proc-pid-map_files-and-make-it-readable-fix-fix.patch
fs-coda-fix-readlink-buffer-overflow-checkpatch-fixes.patch
kexec-split-kexec_file-syscall-code-to-kexec_filec-fix.patch
kexec-split-kexec_file-syscall-code-to-kexec_filec-fix-2.patch
kexec-split-kexec_file-syscall-code-to-kexec_filec-fix-2-fix.patch
kexec-split-kexec_file-syscall-code-to-kexec_filec-fix-2-fix-fix.patch
kexec-split-kexec_load-syscall-from-kexec-core-code-checkpatch-fixes.patch
align-crash_notes-allocation-to-make-it-be-inside-one-physical-page-fix.patch
linux-next-rejects.patch
fs-seq_file-convert-int-seq_vprint-seq_printf-etc-returns-to-void-fix.patch
fs-seq_file-convert-int-seq_vprint-seq_printf-etc-returns-to-void-fix-fix.patch
mm-mpx-add-vm_flags_t-vm_flags-arg-to-do_mmap_pgoff-fix-checkpatch-fixes.patch
uaccess-reimplement-probe_kernel_address-using-probe_kernel_read.patch
uaccess-reimplement-probe_kernel_address-using-probe_kernel_read-fix.patch
do_shared_fault-check-that-mmap_sem-is-held.patch
kernel-forkc-export-kernel_thread-to-modules.patch
slab-leaks3-default-y.patch
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