diff options
| -rw-r--r-- | drivers/block/zram/zram_drv.c | 16 | ||||
| -rw-r--r-- | drivers/block/zram/zram_drv.h | 1 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 8e74cafe9008..de4fdb599a58 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -101,6 +101,16 @@ static inline void zram_set_element(struct zram *zram, u32 index, zram->table[index].element = element; } +static void zram_accessed(struct zram *zram, u32 index) +{ + zram->table[index].ac_time = sched_clock(); +} + +static void zram_reset_access(struct zram *zram, u32 index) +{ + zram->table[index].ac_time = 0; +} + static unsigned long zram_get_element(struct zram *zram, u32 index) { return zram->table[index].element; @@ -814,6 +824,8 @@ static void zram_free_page(struct zram *zram, size_t index) { unsigned long handle; + zram_reset_access(zram, index); + if (zram_test_flag(zram, index, ZRAM_HUGE)) { zram_clear_flag(zram, index, ZRAM_HUGE); atomic64_dec(&zram->stats.huge_pages); @@ -1183,6 +1195,10 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index, generic_end_io_acct(rw, &zram->disk->part0, start_time); + zram_slot_lock(zram, index); + zram_accessed(zram, index); + zram_slot_unlock(zram, index); + if (unlikely(ret < 0)) { if (rw == READ) atomic64_inc(&zram->stats.failed_reads); diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h index 4c4bc6042c89..79c73f50a2a2 100644 --- a/drivers/block/zram/zram_drv.h +++ b/drivers/block/zram/zram_drv.h @@ -78,6 +78,7 @@ struct zram_table_entry { unsigned long element; }; unsigned long value; + u64 ac_time; }; struct zram_stats { |