[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20240911080130.3766632-2-senozhatsky@chromium.org>
Date: Wed, 11 Sep 2024 17:01:09 +0900
From: Sergey Senozhatsky <senozhatsky@...omium.org>
To: Andrew Morton <akpm@...ux-foundation.org>,
Minchan Kim <minchan@...nel.org>
Cc: linux-kernel@...r.kernel.org,
Sergey Senozhatsky <senozhatsky@...omium.org>
Subject: [PATCHv3 1/6] zram: introduce ZRAM_PP_SLOT flag
This flag indicates that the slot was selected as a
candidate slot for post-processing (pp) and was assigned
to a pp bucket. It does not necessarily mean that the
slot is currently under post-processing, but may mean
so. The slot can loose its PP_SLOT flag, while still
being in the pp-bucket, if it's accessed or slot_free-ed.
Signed-off-by: Sergey Senozhatsky <senozhatsky@...omium.org>
---
drivers/block/zram/zram_drv.c | 2 ++
drivers/block/zram/zram_drv.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index ee2a279c5f25..d170bf6cdcd8 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -178,6 +178,7 @@ static inline u32 zram_get_priority(struct zram *zram, u32 index)
static void zram_accessed(struct zram *zram, u32 index)
{
zram_clear_flag(zram, index, ZRAM_IDLE);
+ zram_clear_flag(zram, index, ZRAM_PP_SLOT);
#ifdef CONFIG_ZRAM_TRACK_ENTRY_ACTIME
zram->table[index].ac_time = ktime_get_boottime();
#endif
@@ -1354,6 +1355,7 @@ static void zram_free_page(struct zram *zram, size_t index)
zram_clear_flag(zram, index, ZRAM_INCOMPRESSIBLE);
zram_set_priority(zram, index, 0);
+ zram_clear_flag(zram, index, ZRAM_PP_SLOT);
if (zram_test_flag(zram, index, ZRAM_WB)) {
zram_clear_flag(zram, index, ZRAM_WB);
diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h
index cfc8c059db63..914cb6629969 100644
--- a/drivers/block/zram/zram_drv.h
+++ b/drivers/block/zram/zram_drv.h
@@ -48,6 +48,7 @@ enum zram_pageflags {
ZRAM_SAME = ZRAM_FLAG_SHIFT, /* Page consists the same element */
ZRAM_WB, /* page is stored on backing_device */
ZRAM_UNDER_WB, /* page is under writeback */
+ ZRAM_PP_SLOT, /* Selected for post-processing */
ZRAM_HUGE, /* Incompressible page */
ZRAM_IDLE, /* not accessed page since last idle marking */
ZRAM_INCOMPRESSIBLE, /* none of the algorithms could compress it */
--
2.46.0.598.g6f2099f65c-goog
Powered by blists - more mailing lists