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author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2017-04-13 14:56:17 -0700 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-16 10:33:50 +0100 |
commit | d4443b53732e5e98220ec8777d11e3c9eb87f5fd (patch) | |
tree | aba2acb26f17746e9edd58803852a200c6eb9840 /drivers/ras | |
parent | 696fbe191acd2809e2e8b385b455845cf0a18887 (diff) | |
download | linux-stable-d4443b53732e5e98220ec8777d11e3c9eb87f5fd.tar.gz linux-stable-d4443b53732e5e98220ec8777d11e3c9eb87f5fd.tar.bz2 linux-stable-d4443b53732e5e98220ec8777d11e3c9eb87f5fd.zip |
thp: reduce indentation level in change_huge_pmd()
commit 0a85e51d37645e9ce57e5e1a30859e07810ed07c upstream.
Patch series "thp: fix few MADV_DONTNEED races"
For MADV_DONTNEED to work properly with huge pages, it's critical to not
clear pmd intermittently unless you hold down_write(mmap_sem).
Otherwise MADV_DONTNEED can miss the THP which can lead to userspace
breakage.
See example of such race in commit message of patch 2/4.
All these races are found by code inspection. I haven't seen them
triggered. I don't think it's worth to apply them to stable@.
This patch (of 4):
Restructure code in preparation for a fix.
Link: http://lkml.kernel.org/r/20170302151034.27829-2-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[jwang: adjust context for 4.4 kernel]
Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/ras')
0 files changed, 0 insertions, 0 deletions