Dave Kleikamp: > > - you have two mmap for a single file > > Explain what you mean by a single file. If there are two mmaps to the > upper file, they will see the same changes. If one is to the upper > file, and one is to the lower file, they will NOT be mmap'ed to the same > file. A regular file on the lower readonly layer. Not a single block/page is copied-up yet. > No. The first mapping is not even aware of the second mapping. It > continues to see the read-only data Should the first mapping see the latest (modified) content? J. R. Okajima -- 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