On Mon, 27 Nov 2006 22:52:04 +0100
Eric Dumazet <[email protected]> wrote:
> > I didn't understand that paragraph at all, really, so I took it out.
> >
> > At present an i_size change will dirty one, two or three cachelines, most
> > likely one or two.
> >
> > After your patch an i_size change will dirty one or two cachelines, most
> > likely one.
> >
> > yes?
>
> nope
>
> Before :
> ---------
> offsetof(i_size) = 0x3C
>
> i_size is 8 bytes, so i_size spans 2 cache lines (if 64 or 32 bytes cache lines)
This all depends on the offset of the inode, and you don't know what that is.
offsetof(ext3_inode_info, vfs_inode) != offsetof(nfs_inode, vfs_inode), etc.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
