diff options
| author | Kirill A. Shutemov | 2016-07-26 15:25:34 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2016-07-26 16:19:19 -0700 |
| commit | b5072380eb619786990cd9eab3ade05d09ccd89e (patch) | |
| tree | b5b8d219600e15da7247eacad7788c241b5f19e1 /lib/idr.c | |
| parent | 95ecedcd6abbb05d8177331e2fa697888dcd634b (diff) | |
thp: support file pages in zap_huge_pmd()
split_huge_pmd() for file mappings (and DAX too) is implemented by just
clearing pmd entry as we can re-fill this area from page cache on pte
level later.
This means we don't need deposit page tables when file THP is mapped.
Therefore we shouldn't try to withdraw a page table on zap_huge_pmd()
file THP PMD.
Link: http://lkml.kernel.org/r/1466021202-61880-14-git-send-email-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/idr.c')
0 files changed, 0 insertions, 0 deletions