Hi, This patch series implements delayed extent list, more analysis is in the 3rd patch. Any feedbacks or suggestions are welcome. Yongqiang. [RFC PATCH 1/5] ext4: add two structures delayed extent list nees [RFC PATCH 2/5] ext4: add a delayed extents list in inode [RFC PATCH 3/5] ext4: add operations on delayed extent tree [RFC PATCH 4/5] ext4: let ext4 maintian delayed extent lists [RFC PATCH 5/5] ext4: reimplement fiemap on delayed extent list -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html