Hi Peter, On Tue, Sep 15, 2009 at 7:15 AM, Peter Teoh <[email protected]> wrote: > just to share what i have read, based on "lwn.net surfing": > > From the article that started it all: > > http://lwn.net/Articles/260795/ > > From the specs, if u used ioctl() with FIEMAP_EXTENT_HOLE it will keep > returning u the next hole. > > http://lwn.net/Articles/297696/ > http://lwn.net/Articles/260803/ > http://lwn.net/Articles/332610/ > http://lwn.net/Articles/275722/ > > a few of the articles above have userspace program that shows how to > use the primitive FIEMAP_EXTENT_HOLE to identify holes. > > have fun!! > Thanks for pointing to these docs. But just for everyones benefit, wanted to mention that most of these documents are obsolete and the implementation has changed a lot since then.
The conversation I pasted yesterday on the mail was from one of the authors (Kalpak Shah) of FS_IOC_FIEMAP infrastructure. Look at the latest file: http://lxr.linux.no/#linux+v2.6.31/include/linux/fiemap.h Otherwise, the documents are really good to understand the infrastructure. -- Regards, Sandeep. “To learn is to change. Education is a process that changes the learner.” -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to [email protected] Please read the FAQ at http://kernelnewbies.org/FAQ
