diff options
| -rw-r--r-- | drivers/block/zram/zram_drv.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 5906ba061165..8dd733707a40 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -521,7 +521,8 @@ struct zram_wb_req { }; static ssize_t writeback_limit_enable_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t len) + struct device_attribute *attr, + const char *buf, size_t len) { struct zram *zram = dev_to_zram(dev); u64 val; @@ -530,18 +531,19 @@ static ssize_t writeback_limit_enable_store(struct device *dev, if (kstrtoull(buf, 10, &val)) return ret; - down_read(&zram->init_lock); + down_write(&zram->init_lock); spin_lock(&zram->wb_limit_lock); zram->wb_limit_enable = val; spin_unlock(&zram->wb_limit_lock); - up_read(&zram->init_lock); + up_write(&zram->init_lock); ret = len; return ret; } static ssize_t writeback_limit_enable_show(struct device *dev, - struct device_attribute *attr, char *buf) + struct device_attribute *attr, + char *buf) { bool val; struct zram *zram = dev_to_zram(dev); @@ -556,7 +558,8 @@ static ssize_t writeback_limit_enable_show(struct device *dev, } static ssize_t writeback_limit_store(struct device *dev, - struct device_attribute *attr, const char *buf, size_t len) + struct device_attribute *attr, + const char *buf, size_t len) { struct zram *zram = dev_to_zram(dev); u64 val; @@ -565,11 +568,11 @@ static ssize_t writeback_limit_store(struct device *dev, if (kstrtoull(buf, 10, &val)) return ret; - down_read(&zram->init_lock); + down_write(&zram->init_lock); spin_lock(&zram->wb_limit_lock); zram->bd_wb_limit = val; spin_unlock(&zram->wb_limit_lock); - up_read(&zram->init_lock); + up_write(&zram->init_lock); ret = len; return ret; |