On Tue, May 31, 2016 at 9:08 AM, Stef Bon <stefbon@xxxxxxxxx> wrote: > Hi, > > I've read some news about the 4.7 kernel : > > "And in particular, if > you're a low-level filesystem person, or involved in other ways in > path component lookup (security layer etc), go check that everything > looks ok, and if your filesystem isn't one that does parallel lookups > or readdirs yet (because locking issues), take a look at that too." > > https://lkml.org/lkml/2016/5/29/77 > > Does this have consequenses for fuse? > I know that with some filesystems I've written the readdir call locks > the directory exclusive. The problem would be if the fuse filesystem assumed serialized lookup/readdir and they don't do any locking themselves. We probably need to conditionally re-add the lookup/readdir serialization to the fuse kernel module, with an INIT flag to explicitly enable parallel readdir and lookup (i.e. disable the serialization). Thanks, Miklos -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
