mount: add an optional capability to create new /dev/loopN as needed

Signed-off-by: Lauri Kasanen <curaga@operamail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/util-linux/Config.in b/util-linux/Config.in
index acd74a2c6..a59cc1ddf 100644
--- a/util-linux/Config.in
+++ b/util-linux/Config.in
@@ -901,6 +901,18 @@ config FEATURE_MOUNT_LOOP
           specify an offset or cryptographic options to the loopback device.
           (If you don't want umount to free the loop device, use "umount -D".)
 
+config FEATURE_MOUNT_LOOP_CREATE
+        bool "Create new loopback devices if needed"
+        default n
+        depends on FEATURE_MOUNT_LOOP
+        help
+          Linux kernels >= 2.6.24 support unlimited loopback devices. They are
+          allocated for use when trying to use a loop device. The loop device
+          must however exist.
+
+          This feature lets mount to try to create next /dev/loopN device
+          if it does not find a free one.
+
 config FEATURE_MTAB_SUPPORT
         bool "Support for the old /etc/mtab file"
         default n