On Thu, Sep 15, 2011 at 04:06:46PM -0700, Andi Kleen wrote: > Currently generic_file_llseek users synchronize all on the inode i_mutex, > which is very heavy handed because it affects even different processes. > > This patchkit attempts to make generic_file_llseek (mostly) lockless. Yes, but, are there any real workloads which care? I know will-it-scale says that lseek doesn't scale, but any real app which has a seek-heavy workload is surely using pread()/pwrite() by now ... after all, they were in UNIX98 so they've been a standard for 13 years. -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step." -- 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
