Add a variable that allows additional options to be passed to tune2fs,
such as -m to control the amount of space reserved for root.

This could potentially be added for other filesystems, but right now we
need it only for ext3 for self-hosted-image.

Signed-off-by: Paul Eggleton <paul.eggle...@linux.intel.com>
---
 meta/classes/image_types.bbclass |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index b590ae1..152e5b4 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -132,9 +132,11 @@ IMAGE_CMD_ext2 () {
        rmdir ${DEPLOY_DIR_IMAGE}/tmp.gz-${PN}
 }
 
+IMAGE_TUNE2FS_ext3 ?= ""
+
 IMAGE_CMD_ext3 () {
        genext2fs -b $ROOTFS_SIZE -d ${IMAGE_ROOTFS} ${EXTRA_IMAGECMD} 
${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ext3
-       tune2fs -j ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ext3
+       tune2fs -j ${IMAGE_TUNE2FS_ext3} 
${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ext3
 }
 
 oe_mkext4fs () {
-- 
1.7.5.4


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