The commit 461a8eee6a ("zram: report maximum used memory") introduces a new
knob "mem_used_max" in zram.stats sysfs, and wants to reset it via write 0
to the sysfs interface.
However, the current code cann't reset it correctly, so let's fix it.
Signed-off-by: Weijie Yang <weijie.yang@xxxxxxxxxxx>
---
drivers/block/zram/zram_drv.c | 4 +---
1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 0e63e8a..64dd79a 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -173,7 +173,6 @@ static ssize_t mem_used_max_store(struct device *dev,
int err;
unsigned long val;
struct zram *zram = dev_to_zram(dev);
- struct zram_meta *meta = zram->meta;
err = kstrtoul(buf, 10, &val);
if (err || val != 0)
@@ -181,8 +180,7 @@ static ssize_t mem_used_max_store(struct device *dev,
down_read(&zram->init_lock);
if (init_done(zram))
- atomic_long_set(&zram->stats.max_used_pages,
- zs_get_total_pages(meta->mem_pool));
+ atomic_long_set(&zram->stats.max_used_pages, 0);
up_read(&zram->init_lock);
return len;
--
1.7.0.4
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