On Mon, Jun 26, 2006 at 10:58:24PM +0200, Ingo Molnar wrote:
> i think you might be missing that GFS does cross-node locking in
> readlink too. (OCFS2 does not do it because it apparently does not care
> about cross-node atime correctness here it seems.) So GFS simply cannot
> use generic_readlink()!
Please read the code before giving such useless comments. ->follow_link
needs exactly the same locking as ->readlink. The whole point of
using generic_readlink is to avoid having the filesystem reimplement
almost the same code twice, once copying to a kernel buffer and once to
a user buffer.
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