| commit | b8ca9e3a612eaf3e54c6fa136c62246a1a9aece7 | [log] [tgz] |
|---|---|---|
| author | Eric Dumazet <edumazet@google.com> | Fri May 20 16:57:53 2016 -0700 |
| committer | Linus Torvalds <torvalds@linux-foundation.org> | Fri May 20 17:58:30 2016 -0700 |
| tree | 4738aff27fdf4f88f77deaebd30454f94ea63a44 | |
| parent | 297880f4af4e492ed5084be9397d65a18ade56ee [diff] |
mm: tighten fault_in_pages_writeable() copy_page_to_iter_iovec() is currently the only user of fault_in_pages_writeable(), and it definitely can use fragments from high order pages. Make sure fault_in_pages_writeable() is only touching two adjacent pages at most, as claimed. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>