https://github.com/torvalds/linux
Revision 5cbc198ae08d84bd416b672ad8bd1222acd0855c authored by Kirill A. Shutemov on 30 November 2016, 23:54:19 UTC, committed by Linus Torvalds on 01 December 2016, 00:32:52 UTC
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>
1 parent 828347f
Tip revision: 5cbc198ae08d84bd416b672ad8bd1222acd0855c authored by Kirill A. Shutemov on 30 November 2016, 23:54:19 UTC
mm: fix false-positive WARN_ON() in truncate/invalidate for hugetlb
mm: fix false-positive WARN_ON() in truncate/invalidate for hugetlb
Tip revision: 5cbc198
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| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
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| MAINTAINERS | -rw-r--r-- | 373.8 KB |
| Makefile | -rw-r--r-- | 57.5 KB |
| README | -rw-r--r-- | 17.9 KB |
| REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
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