tools/vm/page-types.c: fix "kpagecount returned fewer pages than expected" failures
authorAnthony Yznaga <anthony.yznaga@oracle.com>
Fri, 28 Dec 2018 08:37:27 +0000 (00:37 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 5 Dec 2019 08:20:59 +0000 (09:20 +0100)
commita787b7ac3cc79cc8ad02e91385b9c7f5adebd31c
tree2d611f0049c86d869e1582cdfa761c5d1413798d
parent5643569bec7d03e49c27e732e011219af87caeaf
tools/vm/page-types.c: fix "kpagecount returned fewer pages than expected" failures

[ Upstream commit b6fb87b8e3ff1ef6bcf68470f24a97c984554d5a ]

Because kpagecount_read() fakes success if map counts are not being
collected, clamp the page count passed to it by walk_pfn() to the pages
value returned by the preceding call to kpageflags_read().

Link: http://lkml.kernel.org/r/1543962269-26116-1-git-send-email-anthony.yznaga@oracle.com
Fixes: 7f1d23e60718 ("tools/vm/page-types.c: include shared map counts")
Signed-off-by: Anthony Yznaga <anthony.yznaga@oracle.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
tools/vm/page-types.c