[archiso] Merge cowspace_size= option in cowfile_size=

Since now cowspace_size == cowfile_size (only one file inside)
Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@gmail.com>

archiso/initcpio/hooks/archiso

@@ -96,7 +96,6 @@ _verify_checksum() {
 
 run_hook() {
     [[ -z "${arch}" ]] && arch="$(uname -m)"
-    [[ -z "${cowspace_size}" ]] && cowspace_size="75%"
     [[ -z "${copytoram_size}" ]] && copytoram_size="75%"
     [[ -z "${archisobasedir}" ]] && archisobasedir="arch"
     [[ -z "${dm_snap_prefix}" ]] && dm_snap_prefix="arch"
@@ -160,9 +159,9 @@ archiso_mount_handler() {
         echo $(readlink -f ${cow_device}) >> /run/archiso/used_block_devices
         mount -o remount,rw "/run/archiso/cowspace"
     else
-        msg ":: Mounting /run/archiso/cowspace (tmpfs) filesystem, size=${cowspace_size}..."
+        msg ":: Mounting /run/archiso/cowspace (tmpfs) filesystem, size=${cowfile_size}..."
         mkdir -p /run/archiso/cowspace
-        mount -t tmpfs -o "size=${cowspace_size}",mode=0755 cowspace /run/archiso/cowspace
+        mount -t tmpfs -o "size=${cowfile_size}",mode=0755 cowspace /run/archiso/cowspace
     fi
     mkdir -p "/run/archiso/cowspace/${cow_directory}"
 

docs/README.bootparams

@@ -40,14 +40,9 @@ INDEX
                     Default: "/persistent_${archisolabel}/${arch}"
 * cow_persistent=   Set if snapshot is persistent "P" or non-persistent "N".
                     Default: "N" (if no ${cow_device} is used) otherwise "P".
-* cowspace_size=    Set the size of tmpfs /cowspace. This space is used for
-                    Copy-On-Write files of dm-snapshot.
-                    Size is in bytes (suffix with "k", "m" and "g") or
-                    in percentage of available RAM.
-                    Default: "75%"
 * cowfile_size=     Set the size for COW file (dm-snapshot).
                     The argument is an integer and optional unit.
-                    Units are M,G (powers of 1024) or MB,GB (powers of 1000).
+                    Units are M,G (powers of 1024).
                     Default: "256M"
 * copytoram_size=   Set the size of tmpfs. This space is used for
                     airootfs.sfs image if copytoram=y.