1 files changed, 25 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-block-zram b/Documentation/ABI/testing/sysfs-block-zram
index a6148eaf91e5..2e69e83bf510 100644
--- a/Documentation/ABI/testing/sysfs-block-zram
+++ b/Documentation/ABI/testing/sysfs-block-zram
@@ -141,3 +141,28 @@ Description:
                 amount of memory ZRAM can use to store the compressed data.  The
                 limit could be changed in run time and "0" means disable the
                 limit.  No limit is the initial state.  Unit: bytes
+
+What:           /sys/block/zram<id>/compact
+Date:           August 2015
+Contact:        Minchan Kim <minchan@kernel.org>
+Description:
+                The compact file is write-only and trigger compaction for
+                allocator zrm uses. The allocator moves some objects so that
+                it could free fragment space.
+
+What:           /sys/block/zram<id>/io_stat
+Date:           August 2015
+Contact:        Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
+Description:
+                The io_stat file is read-only and accumulates device's I/O
+                statistics not accounted by block layer. For example,
+                failed_reads, failed_writes, etc. File format is similar to
+                block layer statistics file format.
+
+What:           /sys/block/zram<id>/mm_stat
+Date:           August 2015
+Contact:        Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
+Description:
+                The mm_stat file is read-only and represents device's mm
+                statistics (orig_data_size, compr_data_size, etc.) in a format
+                similar to block layer statistics file format.