Hello, I have a situation that needs the contiguous block allocation from application point of view. For example, is there any way for ext4 to allocates the contiguous blocks for my 128KB file write? In the source code, mballoc seems to guarantee the contiguous blocks allocation with the maximum of s_mb_stream_request, which is 16 by default. the comment in the source code also says s_mb_stream_request is configurable by /sys/fs/ext4/<partition>/mb_stream_req. If it works, I can set s_mb_stream_request to 32 for 128KB contiguous block allocation in case of 4KB block size. Thanks, Ted -- 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