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| author |   Eric Dumazet <edumazet@google.com> | 2016-05-20 16:57:53 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 17:58:30 -0700 |
| commit | b8ca9e3a612eaf3e54c6fa136c62246a1a9aece7 (patch) | |
| tree | 4738aff27fdf4f88f77deaebd30454f94ea63a44 /mm/swap.c | |
| parent | mm, hugetlb_cgroup: round limit_in_bytes down to hugepage size (diff) | |
| download | linux-dev-b8ca9e3a612eaf3e54c6fa136c62246a1a9aece7.tar.xz linux-dev-b8ca9e3a612eaf3e54c6fa136c62246a1a9aece7.zip | |
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>
Diffstat (limited to 'mm/swap.c')
0 files changed, 0 insertions, 0 deletions