If entry does not fulfill current mark_idle() parameters, e.g.
cutoff time, then we should clear its ZRAM_IDLE from previous
mark_idle() invocations.
Consider the following case:
- mark_idle() cutoff time 8h
- mark_idle() cutoff time 4h
- writeback() idle - will writeback entries with cutoff time 8h,
while it should only pick entries with cutoff time 4h
Reported-by: Shin Kawamura <kawasin@google.com>
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
---
drivers/block/zram/zram_drv.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 764c5b79b42b..d3b1c1bfaf18 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -410,6 +410,8 @@ static void mark_idle(struct zram *zram, ktime_t cutoff)
#endif
if (is_idle)
zram_set_flag(zram, index, ZRAM_IDLE);
+ else
+ zram_clear_flag(zram, index, ZRAM_IDLE);
zram_slot_unlock(zram, index);
}
}
--
2.47.0.163.g1226f6d8fa-goog