From: Sergey Senozhatsky Date: Mon, 7 Apr 2014 22:38:05 +0000 (-0700) Subject: zram: report failed read and write stats X-Git-Tag: firefly_0821_release~3680^2~8^2^2~45 X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=0a0d055ef99c20fe0e6b1cced9d358ab2e56eafd;p=firefly-linux-kernel-4.4.55.git zram: report failed read and write stats zram accounted but did not report numbers of failed read and write queries. make these stats available as failed_reads and failed_writes attrs. Signed-off-by: Sergey Senozhatsky Acked-by: Minchan Kim Acked-by: Jerome Marchand Cc: Nitin Gupta Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds (cherry picked from commit 6444724939db5de7390c90f7b4a657159b3b4465) Signed-off-by: Alex Shi --- diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index c4179fb54fde..4043e783e50a 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -728,6 +728,8 @@ static DEVICE_ATTR(mem_used_total, S_IRUGO, mem_used_total_show, NULL); ZRAM_ATTR_RO(num_reads); ZRAM_ATTR_RO(num_writes); +ZRAM_ATTR_RO(failed_reads); +ZRAM_ATTR_RO(failed_writes); ZRAM_ATTR_RO(invalid_io); ZRAM_ATTR_RO(notify_free); ZRAM_ATTR_RO(zero_pages); @@ -739,6 +741,8 @@ static struct attribute *zram_disk_attrs[] = { &dev_attr_reset.attr, &dev_attr_num_reads.attr, &dev_attr_num_writes.attr, + &dev_attr_failed_reads.attr, + &dev_attr_failed_writes.attr, &dev_attr_invalid_io.attr, &dev_attr_notify_free.attr, &dev_attr_zero_pages.attr,