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| author | Kirill A. Shutemov <[email protected]> | 2016-11-30 23:54:19 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2016-12-01 00:32:52 +0000 |
| commit | 5cbc198ae08d84bd416b672ad8bd1222acd0855c (patch) | |
| tree | 985d1c3e96076aaca0f485d26f04b9957f920013 /arch/powerpc/lib/code-patching.c | |
| parent | kasan: support use-after-scope detection (diff) | |
| download | kernel-5cbc198ae08d84bd416b672ad8bd1222acd0855c.tar.gz kernel-5cbc198ae08d84bd416b672ad8bd1222acd0855c.zip | |
mm: fix false-positive WARN_ON() in truncate/invalidate for hugetlb
Hugetlb pages have ->index in size of the huge pages (PMD_SIZE or
PUD_SIZE), not in PAGE_SIZE as other types of pages. This means we
cannot user page_to_pgoff() to check whether we've got the right page
for the radix-tree index.
Let's introduce page_to_index() which would return radix-tree index for
given page.
We will be able to get rid of this once hugetlb will be switched to
multi-order entries.
Fixes: fc127da085c2 ("truncate: handle file thp")
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Kirill A. Shutemov <[email protected]>
Reported-by: Doug Nelson <[email protected]>
Tested-by: Doug Nelson <[email protected]>
Reviewed-by: Naoya Horiguchi <[email protected]>
Cc: <[email protected]> [4.8+]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'arch/powerpc/lib/code-patching.c')
0 files changed, 0 insertions, 0 deletions