Messages in this thread | | | Date | Fri, 28 Oct 2005 21:02:25 +0200 | From | Jörn Engel <> | Subject | Re: Learning ext2 fs |
| |
On Thu, 27 October 2005 19:05:16 +0100, Paulo da Silva wrote: > > I am reading the ext2 fs code. One of my purposes > is to save the original data of a file to another file > just before it is changed by write/mmap/whatever. > Because of mmap (any other reasons?) I thought > of doing this at "ext2-writepage" or/and > "ext2-writepages". > > Is this the right place?
Maybe, but the error handling will drive you insane. My approach was to copy on open, not on write. See http://wohnheim.fh-wedel.de/~joern/cowlink/
Jörn
-- Happiness isn't having what you want, it's wanting what you have. -- unknown - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |