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linux/mm/damon
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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 - Alistair Popple has a series which addresses a race which causes page 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 2022-11-08 15:57:25 -08:00
Kconfig mm/damon/Kconfig: notify debugfs deprecation plan 2022-10-03 14:03:06 -07:00
lru_sort.c mm/damon: deduplicate damon_{reclaim,lru_sort}_apply_parameters() 2022-10-03 14:03:31 -07:00
Makefile mm/damon: introduce DAMON-based LRU-lists Sorting 2022-07-03 18:08:43 -07:00
modules-common.h mm/damon/modules-common: implement damos time quota params generator 2022-10-03 14:03:13 -07:00
ops-common.c mm/damon: rename damon_pageout_score() to damon_cold_score() 2022-10-03 14:03:31 -07:00
ops-common.h mm/damon: rename damon_pageout_score() to damon_cold_score() 2022-10-03 14:03:31 -07:00
paddr.c mm/damon/paddr: fix missing folio_put() 2023-03-10 09:34:20 +01:00
reclaim.c mm/damon: deduplicate damon_{reclaim,lru_sort}_apply_parameters() 2022-10-03 14:03:31 -07:00
sysfs.c mm/damon/sysfs: fix wrong empty schemes assumption under online tuning in damon_sysfs_set_schemes() 2022-11-30 14:49:41 -08:00
vaddr-test.h damon: convert __damon_va_three_regions to use the VMA iterator 2022-09-26 19:46:16 -07:00
vaddr.c mm/damon: use damon_sz_region() in appropriate place 2022-10-12 18:51:49 -07:00