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andrew.yang daa5a586e4 mm/damon/paddr: fix missing folio_put()

commit 3f98c9a62c upstream.

damon_get_folio() would always increase folio _refcount and
folio_isolate_lru() would increase folio _refcount if the folio's lru flag
is set.

If an unevictable folio isolated successfully, there will be two more
_refcount.  The one from folio_isolate_lru() will be decreased in
folio_puback_lru(), but the other one from damon_get_folio() will be left
behind.  This causes a pin page.

Whatever the case, the _refcount from damon_get_folio() should be
decreased.

Link: https://lkml.kernel.org/r/20230222064223.6735-1-andrew.yang@mediatek.com
Fixes: 57223ac295 ("mm/damon/paddr: support the pageout scheme")
Signed-off-by: andrew.yang <andrew.yang@mediatek.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org>	[5.16.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2023-03-10 09:34:20 +01:00

core-test.h

mm/damon/core-test: test damon_set_regions

2022-10-03 14:03:06 -07:00

core.c

Merge tag 'mm-stable-2022-10-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2022-10-14 12:28:43 -07:00

dbgfs-test.h

mm/damon/dbgfs-test: fix is_target_id() change

2022-03-22 15:57:12 -07:00

dbgfs.c

mm/damon/dbgfs: check if rm_contexts input is for a real context