| From | "Kirill A. Shutemov" <> | Subject | [PATCHv4 15/39] thp, mm: trigger bug in replace_page_cache_page() on THP | Date | Sun, 12 May 2013 04:23:12 +0300 |
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From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
replace_page_cache_page() is only used by FUSE. It's unlikely that we will support THP in FUSE page cache any soon.
Let's pospone implemetation of THP handling in replace_page_cache_page() until any will use it.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> --- mm/filemap.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/mm/filemap.c b/mm/filemap.c index 657ce82..3a03426 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -428,6 +428,8 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask) { int error; + VM_BUG_ON(PageTransHuge(old)); + VM_BUG_ON(PageTransHuge(new)); VM_BUG_ON(!PageLocked(old)); VM_BUG_ON(!PageLocked(new)); VM_BUG_ON(new->mapping); -- 1.7.10.4
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