Searched hist:"5 cbc198ae08d84bd416b672ad8bd1222acd0855c" (Results 1 – 2 of 2) sorted by relevance
/linux/mm/ |
H A D | truncate.c | diff 5cbc198ae08d84bd416b672ad8bd1222acd0855c Thu Dec 01 00:54:19 CET 2016 Kirill A. Shutemov <kirill.shutemov@linux.intel.com> 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/20161123093053.mjbnvn5zwxw5e6lk@black.fi.intel.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reported-by: Doug Nelson <doug.nelson@intel.com> Tested-by: Doug Nelson <doug.nelson@intel.com> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: <stable@vger.kernel.org> [4.8+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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/linux/include/linux/ |
H A D | pagemap.h | diff 5cbc198ae08d84bd416b672ad8bd1222acd0855c Thu Dec 01 00:54:19 CET 2016 Kirill A. Shutemov <kirill.shutemov@linux.intel.com> 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/20161123093053.mjbnvn5zwxw5e6lk@black.fi.intel.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reported-by: Doug Nelson <doug.nelson@intel.com> Tested-by: Doug Nelson <doug.nelson@intel.com> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: <stable@vger.kernel.org> [4.8+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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