On Thu, 2008-10-16 at 14:40 +0100, Miguel Sousa Filipe wrote: > Hi there, > > I noticed that btrfs, in the git tree, has its own implementation of > crc32c for x86 with SSE4.2 that implement a crc32 instruction.. it > appears. > Its protected by a ifdef CONFIG_BTRFS_HW_SUM, and if we're executing > on the right cpu, that will bypass the kernel implementation of > crc32c. >
The Btrfs support for intel's faster crc32c came from a patch intel posted to linux-kernel. I just hacked it up a bit at the time because I didn't want to wait for mainline to include the work. I don't see intel's patches in mainline yet, but I know there was a plan to get them there. -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
