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05 April 2024, 19:05:47 UTC
Revision f7da677bc6e72033f0981b9d58b5c5d409fa641e authored by Vlastimil Babka on 25 August 2019, 00:54:59 UTC, committed by Linus Torvalds on 25 August 2019, 02:48:42 UTC 
mm, page_owner: handle THP splits correctly
 
THP splitting path is missing the split_page_owner() call that
split_page() has.

As a result, split THP pages are wrongly reported in the page_owner file
as order-9 pages.  Furthermore when the former head page is freed, the
remaining former tail pages are not listed in the page_owner file at
all.  This patch fixes that by adding the split_page_owner() call into
__split_huge_page().

Link: http://lkml.kernel.org/r/20190820131828.22684-2-vbabka@suse.cz
Fixes: a9627bc5e34e ("mm/page_owner: introduce split_page_owner and replace manual handling")
Reported-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 46d0b24
History
Tip revision: f7da677bc6e72033f0981b9d58b5c5d409fa641e authored by Vlastimil Babka on 25 August 2019, 00:54:59 UTC
mm, page_owner: handle THP splits correctly
Tip revision: f7da677
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