diff options
| author | SeongJae Park <sjpark@amazon.de> | 2020-06-08 07:40:04 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-08 21:05:55 +0300 |
| commit | 92fb1db26eefc11554820f11ce8e92007da2fbf4 (patch) | |
| tree | 5de7e60db1dad71f124f9ec55d421022bed61122 /ipc/namespace.c | |
| parent | 9aa900c8094dba7a60dc805ecec1e9f720744ba1 (diff) | |
| download | linux-92fb1db26eefc11554820f11ce8e92007da2fbf4.tar.xz | |
mm/page_idle.c: skip offline pages
'Idle page tracking' users can pass random pfn that might be mapped to an
offline page. To avoid accessing such pages, this commit modifies the
'page_idle_get_page()' to use 'pfn_to_online_page()' instead of
'pfn_valid()' and 'pfn_to_page()' combination, so that the pfn mapped to
an offline page can be skipped.
Reported-by: David Hildenbrand <david@redhat.com>
Signed-off-by: SeongJae Park <sjpark@amazon.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Link: http://lkml.kernel.org/r/20200605092502.18018-2-sjpark@amazon.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/namespace.c')
0 files changed, 0 insertions, 0 deletions