The patch titled
hugetlb: fix absurd HugePages_Rsvd
has been removed from the -mm tree. Its filename was
hugetlb-fix-absurd-hugepages_rsvd.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: hugetlb: fix absurd HugePages_Rsvd
From: Hugh Dickins <hugh@xxxxxxxxxxx>
If you truncated an mmap'ed hugetlbfs file, then faulted on the truncated
area, /proc/meminfo's HugePages_Rsvd wrapped hugely "negative". Reinstate my
preliminary i_size check before attempting to allocate the page (though this
only fixes the most obvious case: more work will be needed here).
Signed-off-by: Hugh Dickins <hugh@xxxxxxxxxxx>
Cc: Adam Litke <agl@xxxxxxxxxx>
Cc: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
Cc: "Chen, Kenneth W" <kenneth.w.chen@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/hugetlb.c | 3 +++
1 file changed, 3 insertions(+)
diff -puN mm/hugetlb.c~hugetlb-fix-absurd-hugepages_rsvd mm/hugetlb.c
--- a/mm/hugetlb.c~hugetlb-fix-absurd-hugepages_rsvd
+++ a/mm/hugetlb.c
@@ -478,6 +478,9 @@ int hugetlb_no_page(struct mm_struct *mm
retry:
page = find_lock_page(mapping, idx);
if (!page) {
+ size = i_size_read(mapping->host) >> HPAGE_SHIFT;
+ if (idx >= size)
+ goto out;
if (hugetlb_get_quota(mapping))
goto out;
page = alloc_huge_page(vma, address);
_
Patches currently in -mm which might be from hugh@xxxxxxxxxxx are
origin.patch
__unmap_hugepage_range-add-comment.patch
shared-page-table-for-hugetlb-page-v4.patch
htlb-forget-rss-with-pt-sharing.patch
honour-mnt_noexec-for-access.patch
generic-bug-implementation.patch
generic-bug-for-i386.patch
generic-bug-for-x86-64.patch
bug-test-1.patch
tty-switch-to-ktermios-powerpc-fix.patch
-
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