Hi, On Mon 01-08-16 11:53:21, Zhang AiHua wrote: > "ext4: fix races between page faults and hole punching" > > can you tell me how to test the patch? Thank you very much. Well, it is not really easy to test for (which is why I haven't written an xfstest for that) :). You can prepare a some zeroed file, mmap it, and read it through mmap while puching holes into the file and also randomly filling holes back while writing zeroes. When there is some other activity in the filesystem allocating blocks and writing to them some data, you may see this data instead of zeros in the mmap if the bug triggers. If you create a successful reproducer, please let me know and consider contributing it to xfstests so that we can check the behavior. Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR -- 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
