The patch titled
Subject: mm-hugetlbfs-unmap-pages-if-page-fault-raced-with-hole-punch-fix
has been added to the -mm tree. Its filename is
mm-hugetlbfs-unmap-pages-if-page-fault-raced-with-hole-punch-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlbfs-unmap-pages-if-page-fault-raced-with-hole-punch-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlbfs-unmap-pages-if-page-fault-raced-with-hole-punch-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-hugetlbfs-unmap-pages-if-page-fault-raced-with-hole-punch-fix
move hugetlb_vmdelete_list()
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Cc: Hillf Danton <hillf.zj@xxxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/hugetlbfs/inode.c | 76 ++++++++++++++++++++---------------------
1 file changed, 38 insertions(+), 38 deletions(-)
diff -puN fs/hugetlbfs/inode.c~mm-hugetlbfs-unmap-pages-if-page-fault-raced-with-hole-punch-fix fs/hugetlbfs/inode.c
--- a/fs/hugetlbfs/inode.c~mm-hugetlbfs-unmap-pages-if-page-fault-raced-with-hole-punch-fix
+++ a/fs/hugetlbfs/inode.c
@@ -324,6 +324,44 @@ static void remove_huge_page(struct page
delete_from_page_cache(page);
}
+static void
+hugetlb_vmdelete_list(struct rb_root *root, pgoff_t start, pgoff_t end)
+{
+ struct vm_area_struct *vma;
+
+ /*
+ * end == 0 indicates that the entire range after
+ * start should be unmapped.
+ */
+ vma_interval_tree_foreach(vma, root, start, end ? end : ULONG_MAX) {
+ unsigned long v_offset;
+ unsigned long v_end;
+
+ /*
+ * Can the expression below overflow on 32-bit arches?
+ * No, because the interval tree returns us only those vmas
+ * which overlap the truncated area starting at pgoff,
+ * and no vma on a 32-bit arch can span beyond the 4GB.
+ */
+ if (vma->vm_pgoff < start)
+ v_offset = (start - vma->vm_pgoff) << PAGE_SHIFT;
+ else
+ v_offset = 0;
+
+ if (!end)
+ v_end = vma->vm_end;
+ else {
+ v_end = ((end - vma->vm_pgoff) << PAGE_SHIFT)
+ + vma->vm_start;
+ if (v_end > vma->vm_end)
+ v_end = vma->vm_end;
+ }
+
+ unmap_hugepage_range(vma, vma->vm_start + v_offset, v_end,
+ NULL);
+ }
+}
+
/*
* remove_inode_hugepages handles two distinct cases: truncation and hole
* punch. There are subtle differences in operation for each case.
@@ -458,44 +496,6 @@ static void hugetlbfs_evict_inode(struct
clear_inode(inode);
}
-static inline void
-hugetlb_vmdelete_list(struct rb_root *root, pgoff_t start, pgoff_t end)
-{
- struct vm_area_struct *vma;
-
- /*
- * end == 0 indicates that the entire range after
- * start should be unmapped.
- */
- vma_interval_tree_foreach(vma, root, start, end ? end : ULONG_MAX) {
- unsigned long v_offset;
- unsigned long v_end;
-
- /*
- * Can the expression below overflow on 32-bit arches?
- * No, because the interval tree returns us only those vmas
- * which overlap the truncated area starting at pgoff,
- * and no vma on a 32-bit arch can span beyond the 4GB.
- */
- if (vma->vm_pgoff < start)
- v_offset = (start - vma->vm_pgoff) << PAGE_SHIFT;
- else
- v_offset = 0;
-
- if (!end)
- v_end = vma->vm_end;
- else {
- v_end = ((end - vma->vm_pgoff) << PAGE_SHIFT)
- + vma->vm_start;
- if (v_end > vma->vm_end)
- v_end = vma->vm_end;
- }
-
- unmap_hugepage_range(vma, vma->vm_start + v_offset, v_end,
- NULL);
- }
-}
-
static int hugetlb_vmtruncate(struct inode *inode, loff_t offset)
{
pgoff_t pgoff;
_
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
ocfs2-fix-slot-overwritten-if-storage-link-down-during-mount-checkpatch-fixes.patch
ocfs2-fix-ip_unaligned_aio-deadlock-with-dio-work-queue-fix.patch
include-linux-dcacheh-remove-semicolons-from-hash_len_declare.patch
mm.patch
account-certain-kmem-allocations-to-memcg-checkpatch-fixes.patch
include-define-__phys_to_pfn-as-phys_pfn-fix.patch
mempolicy-convert-the-shared_policy-lock-to-a-rwlock-fix-2.patch
mm-zonelist-enumerate-zonelists-array-index-checkpatch-fixes.patch
mm-zonelist-enumerate-zonelists-array-index-fix.patch
mm-get-rid-of-__alloc_pages_high_priority-checkpatch-fixes.patch
fs-block_devc-bdev_write_page-use-blk_queue_enter-gfp_noio.patch
arm64-mm-support-arch_mmap_rnd_bits-fix.patch
ksm-introduce-ksm_max_page_sharing-per-page-deduplication-limit-fix-2.patch
page-flags-define-pg_locked-behavior-on-compound-pages-fix.patch
mm-rework-mapcount-accounting-to-enable-4k-mapping-of-thps-fix.patch
mm-hwpoison-adjust-for-new-thp-refcounting-fix.patch
mm-prepare-page_referenced-and-page_idle-to-new-thp-refcounting-checkpatch-fixes.patch
thp-add-debugfs-handle-to-split-all-huge-pages-fix.patch
mm-support-madvisemadv_free-fix-2-fix.patch
arch-uapi-asm-mmanh-let-madv_free-have-same-value-for-all-architectures-fix.patch
arch-uapi-asm-mmanh-let-madv_free-have-same-value-for-all-architectures-fix-fix-2.patch
arch-uapi-asm-mmanh-let-madv_free-have-same-value-for-all-architectures-fix-fix-2-fix-3.patch
mm-oom-rework-oom-detection-checkpatch-fixes.patch
mm-use-watermak-checks-for-__gfp_repeat-high-order-allocations-checkpatch-fixes.patch
sched-add-schedule_timeout_idle.patch
mm-mlockc-change-can_do_mlock-return-value-type-to-boolean-fix.patch
mm-page_allocc-introduce-kernelcore=mirror-option-fix.patch
mm-page_allocc-rework-code-layout-in-memmap_init_zone.patch
mm-hugetlbfs-unmap-pages-if-page-fault-raced-with-hole-punch-fix.patch
kernel-stop_machinec-remove-config_smp-dependencies.patch
kernel-stop_machinec-remove-config_smp-dependencies-fix.patch
lib-vsprintfc-expand-field_width-to-24-bits-fix.patch
lib-test_printfc-test-dentry-printing-fix.patch
printk-help-pr_debug-and-pr_devel-to-optimize-out-arguments-fix.patch
printk-nmi-generic-solution-for-safe-printk-in-nmi-v4-fix-fix.patch
printk-nmi-warn-when-some-message-has-been-lost-in-nmi-context-fix.patch
ptrace-task_stopped_codeptrace-=-true-cant-see-task_stopped-task-fix.patch
ptrace-use-fsuid-fsgid-effective-creds-for-fs-access-checks-fix.patch
fs-coredump-prevent-core-path-components-fix.patch
ubsan-run-time-undefined-behavior-sanity-checker-fix.patch
ubsan-run-time-undefined-behavior-sanity-checker-fix-3.patch
linux-next-rejects.patch
fs-overlayfs-superc-needs-pagemaph.patch
drivers-net-wireless-intel-iwlwifi-dvm-calibc-fix-min-warning.patch
fs-adfs-adfsh-tidy-up-comments.patch
net-drop-tcp_memcontrolc-fix.patch
mm-memcontrol-reign-in-the-config-space-madness-fix.patch
mm-memcontrol-reign-in-the-config-space-madness-fix-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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