Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs updates from Al Viro:

 - more ->d_init() stuff (work.dcache)

 - pathname resolution cleanups (work.namei)

 - a few missing iov_iter primitives - copy_from_iter_full() and
   friends. Either copy the full requested amount, advance the iterator
   and return true, or fail, return false and do _not_ advance the
   iterator. Quite a few open-coded callers converted (and became more
   readable and harder to fuck up that way) (work.iov_iter)

 - several assorted patches, the big one being logfs removal

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  logfs: remove from tree
  vfs: fix put_compat_statfs64() does not handle errors
  namei: fold should_follow_link() with the step into not-followed link
  namei: pass both WALK_GET and WALK_MORE to should_follow_link()
  namei: invert WALK_PUT logics
  namei: shift interpretation of LOOKUP_FOLLOW inside should_follow_link()
  namei: saner calling conventions for mountpoint_last()
  namei.c: get rid of user_path_parent()
  switch getfrag callbacks to ..._full() primitives
  make skb_add_data,{_nocache}() and skb_copy_to_page_nocache() advance only on success
  [iov_iter] new primitives - copy_from_iter_full() and friends
  don't open-code file_inode()
  ceph: switch to use of ->d_init()
  ceph: unify dentry_operations instances
  lustre: switch to use of ->d_init()

6 files changed, 13 insertions, 16 deletions

diff --git a/net/atm/common.c b/net/atm/common.c
index 6dc12305799e..a3ca922d307b 100644
--- a/net/atm/common.c
+++ b/net/atm/common.c
@@ -630,7 +630,7 @@ int vcc_sendmsg(struct socket *sock, struct msghdr *m, size_t size)
                 goto out;
         skb->dev = NULL; /* for paths shared with net_device interfaces */
         ATM_SKB(skb)->atm_options = vcc->atm_options;
-        if (copy_from_iter(skb_put(skb, size), size, &m->msg_iter) != size) {
+        if (!copy_from_iter_full(skb_put(skb, size), size, &m->msg_iter)) {
                 kfree_skb(skb);
                 error = -EFAULT;
                 goto out;
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 577f1c01454a..ce0b5dd01953 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -2127,7 +2127,7 @@ static inline int l2cap_skbuff_fromiovec(struct l2cap_chan *chan,
         struct sk_buff **frag;
         int sent = 0;
 
-        if (copy_from_iter(skb_put(skb, count), count, &msg->msg_iter) != count)
+        if (!copy_from_iter_full(skb_put(skb, count), count, &msg->msg_iter))
                 return -EFAULT;
 
         sent += count;
@@ -2147,8 +2147,8 @@ static inline int l2cap_skbuff_fromiovec(struct l2cap_chan *chan,
 
                 *frag = tmp;
 
-                if (copy_from_iter(skb_put(*frag, count), count,
-                                   &msg->msg_iter) != count)
+                if (!copy_from_iter_full(skb_put(*frag, count), count,
+                                   &msg->msg_iter))
                         return -EFAULT;
 
                 sent += count;
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 9ffc2625cddd..6c9615c90f37 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -826,11 +826,11 @@ ip_generic_getfrag(void *from, char *to, int offset, int len, int odd, struct sk
         struct msghdr *msg = from;
 
         if (skb->ip_summed == CHECKSUM_PARTIAL) {
-                if (copy_from_iter(to, len, &msg->msg_iter) != len)
+                if (!copy_from_iter_full(to, len, &msg->msg_iter))
                         return -EFAULT;
         } else {
                 __wsum csum = 0;
-                if (csum_and_copy_from_iter(to, len, &csum, &msg->msg_iter) != len)
+                if (!csum_and_copy_from_iter_full(to, len, &csum, &msg->msg_iter))
                         return -EFAULT;
                 skb->csum = csum_block_add(skb->csum, csum, odd);
         }
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 5b2635e69a92..86cca610f4c2 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -609,15 +609,15 @@ int ping_getfrag(void *from, char *to,
                 fraglen -= sizeof(struct icmphdr);
                 if (fraglen < 0)
                         BUG();
-                if (csum_and_copy_from_iter(to + sizeof(struct icmphdr),
+                if (!csum_and_copy_from_iter_full(to + sizeof(struct icmphdr),
                             fraglen, &pfh->wcheck,
-                            &pfh->msg->msg_iter) != fraglen)
+                            &pfh->msg->msg_iter))
                         return -EFAULT;
         } else if (offset < sizeof(struct icmphdr)) {
                         BUG();
         } else {
-                if (csum_and_copy_from_iter(to, fraglen, &pfh->wcheck,
-                                            &pfh->msg->msg_iter) != fraglen)
+                if (!csum_and_copy_from_iter_full(to, fraglen, &pfh->wcheck,
+                                            &pfh->msg->msg_iter))
                         return -EFAULT;
         }
 
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 89f2e8c1f4dc..49cd0c70a13a 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2397,14 +2397,11 @@ static int __packet_snd_vnet_parse(struct virtio_net_hdr *vnet_hdr, size_t len)
 static int packet_snd_vnet_parse(struct msghdr *msg, size_t *len,
                                  struct virtio_net_hdr *vnet_hdr)
 {
-        int n;
-
         if (*len < sizeof(*vnet_hdr))
                 return -EINVAL;
         *len -= sizeof(*vnet_hdr);
 
-        n = copy_from_iter(vnet_hdr, sizeof(*vnet_hdr), &msg->msg_iter);
-        if (n != sizeof(*vnet_hdr))
+        if (!copy_from_iter_full(vnet_hdr, sizeof(*vnet_hdr), &msg->msg_iter))
                 return -EFAULT;
 
         return __packet_snd_vnet_parse(vnet_hdr, *len);
diff --git a/net/tipc/msg.c b/net/tipc/msg.c
index 17201aa8423d..a22be502f1bd 100644
--- a/net/tipc/msg.c
+++ b/net/tipc/msg.c
@@ -268,7 +268,7 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
                 __skb_queue_tail(list, skb);
                 skb_copy_to_linear_data(skb, mhdr, mhsz);
                 pktpos = skb->data + mhsz;
-                if (copy_from_iter(pktpos, dsz, &m->msg_iter) == dsz)
+                if (copy_from_iter_full(pktpos, dsz, &m->msg_iter))
                         return dsz;
                 rc = -EFAULT;
                 goto error;
@@ -299,7 +299,7 @@ int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m,
                 if (drem < pktrem)
                         pktrem = drem;
 
-                if (copy_from_iter(pktpos, pktrem, &m->msg_iter) != pktrem) {
+                if (!copy_from_iter_full(pktpos, pktrem, &m->msg_iter)) {
                         rc = -EFAULT;
                         goto error;
                 }