tree ddbe3dca838dea06f3639394bf36bd5b4f10ee31
parent 77ba015f9d5c584226a634753e9b318cb272cd41
author Sergey Senozhatsky <sergey.senozhatsky@gmail.com> 1429139763 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1429140921 -0700

zram: export new 'io_stat' sysfs attrs

Per-device `zram<id>/io_stat' file provides accumulated I/O statistics of
particular zram device in a format similar to block layer statistics.  The
file consists of a single line and represents the following stats
(separated by whitespace):

        failed_reads
        failed_writes
        invalid_io
        notify_free

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>