docs: improve the description of --size in the man page of zramctl

Signed-off-by: Benno Schulenberg <bensberg@justemail.net>

diff --git a/sys-utils/zramctl.8 b/sys-utils/zramctl.8
index a30823388a543f2937b07b4a18862570dc971ddc..6f82ccf5993a714c564db41c1c1fa2905131e34d 100644 (file)
--- a/sys-utils/zramctl.8
+++ b/sys-utils/zramctl.8
@@ -67,15 +67,10 @@ Reset the options of the specified zram device(s).  Zram device settings
 can be changed only after a reset.
 .TP
 .BR \-s , " \-\-size " \fIsize
-Force the zram driver to reread the size of the file associated with
-the specified zram device.  When not specified the
-.I size
-unit is bytes.  The zram devices size is page size aligned.  When
-requested
-.I size
-does match with page size the device be large enough to hold the reqested
-.I size
-plus length to next page boundary.
+Create a zram device of the specified \fIsize\fR.
+Zram devices are aligned to memory pages; when the requested \fIsize\fR is
+not a multiple of the page size, it will be rounded up to the next multiple.
+When not otherwise specified, the unit of the \fIsize\fR parameter is bytes.
 .IP
 The \fIsize\fR argument may be followed by the multiplicative suffixes KiB (=1024),
 MiB (=1024*1024), and so on for GiB, TiB, PiB, EiB, ZiB and YiB (the "iB"