Wu Fengguang <fengguang.wu@xxxxxxxxx> wrote: > > This lockdep warning appears when doing stress memory tests over NFS. > > page reclaim => nfs_writepage => tcp_sendmsg => lock sk_lock > > tcp_close => lock sk_lock => tcp_send_fin => alloc_skb_fclone => page reclaim Well perhaps not this particular path, but it is certainly possible if an existing NFS socket dies and NFS tries to reestablish it. I suggest that NFS should utilise the sk_allocation field and set an appropriate value. Note that you may have to patch TCP so that it uses sk_allocation everywhere necessary, e.g., in tcp_send_fin. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
