pmemblk, dev-dax: Update descriptions

Make the descriptions of the pmemblk and dev-dax ioengines
more symmetric.

Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/HOWTO b/HOWTO
index 33f8718a94d0352f995827f63ed3384f83d9cd63..9c8a8375ae513a7775c08d0378a224930cafc681 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -904,11 +904,13 @@ ioengine=str      Defines how the job issues io to the file. The following
                                overwriting. The writetrim mode works well
                                for this constraint.
 
                                overwriting. The writetrim mode works well
                                for this constraint.
 

-                       pmemblk Read and write through the NVML libpmemblk
-                               interface.
+                       pmemblk Read and write using filesystem DAX to a file
+                               on a filesystem mounted with DAX on a persistent
+                               memory device through the NVML libpmemblk library.

 
 

-                       dev-dax Read and write through a DAX device exposed
-                               from persistent memory.
+                       dev-dax Read and write using device DAX to a persistent
+                               memory device (e.g., /dev/dax0.0) through the
+                               NVML libpmem library.

 
                        external Prefix to specify loading an external
                                IO engine object file. Append the engine
 
                        external Prefix to specify loading an external
                                IO engine object file. Append the engine

diff --git a/fio.1 b/fio.1
index f486276358b4230fdea4693b7662b0d3b3d9a6eb..56f2d11078b583aa4c6844d7fd39c4bedc35dc33 100644 (file)
--- a/fio.1
+++ b/fio.1
@@ -811,10 +811,12 @@ and discarding before overwriting. The trimwrite mode works well for this
 constraint.
 .TP
 .B pmemblk
 constraint.
 .TP
 .B pmemblk

-Read and write through the NVML libpmemblk interface.
+Read and write using filesystem DAX to a file on a filesystem mounted with
+DAX on a persistent memory device through the NVML libpmemblk library.

 .TP
 .B dev-dax
 .TP
 .B dev-dax

-Read and write through a DAX device exposed from persistent memory.
+Read and write using device DAX to a persistent memory device
+(e.g., /dev/dax0.0) through the NVML libpmem library.

 .RE
 .P
 .RE
 .RE
 .P
 .RE