mm: fix KPF_SWAPCACHE in /proc/kpageflags
authorHugh Dickins <hughd@google.com>
Tue, 7 Feb 2017 19:11:16 +0000 (11:11 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 7 Feb 2017 20:08:32 +0000 (12:08 -0800)
commitb6789123bccba8b5feb9901ed2e8c3c39181979d
tree91243683ee007ed611fa01a3cbb89fc814fcb3db
parenta524c218bc94c705886a0e0fedeee45d1931da32
mm: fix KPF_SWAPCACHE in /proc/kpageflags

Commit 6326fec1122c ("mm: Use owner_priv bit for PageSwapCache, valid
when PageSwapBacked") aliased PG_swapcache to PG_owner_priv_1 (and
depending on PageSwapBacked being true).

As a result, the KPF_SWAPCACHE bit in '/proc/kpageflags' should now be
synthesized, instead of being shown on unrelated pages which just happen
to have PG_owner_priv_1 set.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/proc/page.c