Hi, I am working on a file system that allow multiple files to share data blocks. That is, a data block can be shared by two or more files. Now my question is: suppose file A and B share the same data block D. Now a process open file A and read block D, then this process closes file A. If another process open file B and read block D right after the first process closes A, is the data of block D read from some cache or has to be loaded from disk again? I think this has to do with the Linux block device buffer cache. But I am not quite familiar with this part. Can someone help me or direct me to the right place to find the answer? Thanks in advance! -x - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
