Recompression threshold should be below huge-size-class watermark. Any object larger than huge-size-class is a "huge object" and occupies a whole physical page on the zsmalloc side, in other words it's incompressible, as far as zsmalloc is concerned. Suggested-by: Brian Geffon <bgeffon@xxxxxxxxxx> Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx> --- drivers/block/zram/zram_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 1867f378b319..5676e6dd5b16 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1753,7 +1753,7 @@ static ssize_t recompress_store(struct device *dev, } } - if (threshold >= PAGE_SIZE) + if (threshold >= huge_class_size) return -EINVAL; down_read(&zram->init_lock); -- 2.41.0.162.gfafddb0af9-goog
