Merge git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

Pull ceph updates from Sage Weil:
 "There are some updates and cleanups to the CRUSH placement code, a bug
  fix with incremental maps, several cleanups and fixes from Josh Durgin
  in the RBD block device code, a series of cleanups and bug fixes from
  Alex Elder in the messenger code, and some miscellaneous bounds
  checking and gfp cleanups/fixes."

Fix up trivial conflicts in net/ceph/{messenger.c,osdmap.c} due to the
networking people preferring "unsigned int" over just "unsigned".

* git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (45 commits)
  libceph: fix pg_temp updates
  libceph: avoid unregistering osd request when not registered
  ceph: add auth buf in prepare_write_connect()
  ceph: rename prepare_connect_authorizer()
  ceph: return pointer from prepare_connect_authorizer()
  ceph: use info returned by get_authorizer
  ceph: have get_authorizer methods return pointers
  ceph: ensure auth ops are defined before use
  ceph: messenger: reduce args to create_authorizer
  ceph: define ceph_auth_handshake type
  ceph: messenger: check return from get_authorizer
  ceph: messenger: rework prepare_connect_authorizer()
  ceph: messenger: check prepare_write_connect() result
  ceph: don't set WRITE_PENDING too early
  ceph: drop msgr argument from prepare_write_connect()
  ceph: messenger: send banner in process_connect()
  ceph: messenger: reset connection kvec caller
  libceph: don't reset kvec in prepare_write_banner()
  ceph: ignore preferred_osd field
  ceph: fully initialize new layout
  ...

6 files changed, 75 insertions, 98 deletions

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index ed72428d9c7..988d4f302e4 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -54,7 +54,6 @@ prepare_open_request(struct super_block *sb, int flags, int create_mode)
         req->r_fmode = ceph_flags_to_mode(flags);
         req->r_args.open.flags = cpu_to_le32(flags);
         req->r_args.open.mode = cpu_to_le32(create_mode);
-        req->r_args.open.preferred = cpu_to_le32(-1);
 out:
         return req;
 }
diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c
index 790914a598d..8e3fb69fbe6 100644
--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -26,8 +26,7 @@ static long ceph_ioctl_get_layout(struct file *file, void __user *arg)
                 l.stripe_count = ceph_file_layout_stripe_count(ci->i_layout);
                 l.object_size = ceph_file_layout_object_size(ci->i_layout);
                 l.data_pool = le32_to_cpu(ci->i_layout.fl_pg_pool);
-                l.preferred_osd =
-                        (s32)le32_to_cpu(ci->i_layout.fl_pg_preferred);
+                l.preferred_osd = (s32)-1;
                 if (copy_to_user(arg, &l, sizeof(l)))
                         return -EFAULT;
         }
@@ -35,6 +34,32 @@ static long ceph_ioctl_get_layout(struct file *file, void __user *arg)
         return err;
 }
 
+static long __validate_layout(struct ceph_mds_client *mdsc,
+                              struct ceph_ioctl_layout *l)
+{
+        int i, err;
+
+        /* validate striping parameters */
+        if ((l->object_size & ~PAGE_MASK) ||
+            (l->stripe_unit & ~PAGE_MASK) ||
+            ((unsigned)l->object_size % (unsigned)l->stripe_unit))
+                return -EINVAL;
+
+        /* make sure it's a valid data pool */
+        mutex_lock(&mdsc->mutex);
+        err = -EINVAL;
+        for (i = 0; i < mdsc->mdsmap->m_num_data_pg_pools; i++)
+                if (mdsc->mdsmap->m_data_pg_pools[i] == l->data_pool) {
+                        err = 0;
+                        break;
+                }
+        mutex_unlock(&mdsc->mutex);
+        if (err)
+                return err;
+
+        return 0;
+}
+
 static long ceph_ioctl_set_layout(struct file *file, void __user *arg)
 {
         struct inode *inode = file->f_dentry->d_inode;
@@ -44,52 +69,40 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg)
         struct ceph_ioctl_layout l;
         struct ceph_inode_info *ci = ceph_inode(file->f_dentry->d_inode);
         struct ceph_ioctl_layout nl;
-        int err, i;
+        int err;
 
         if (copy_from_user(&l, arg, sizeof(l)))
                 return -EFAULT;
 
         /* validate changed params against current layout */
         err = ceph_do_getattr(file->f_dentry->d_inode, CEPH_STAT_CAP_LAYOUT);
-        if (!err) {
-                nl.stripe_unit = ceph_file_layout_su(ci->i_layout);
-                nl.stripe_count = ceph_file_layout_stripe_count(ci->i_layout);
-                nl.object_size = ceph_file_layout_object_size(ci->i_layout);
-                nl.data_pool = le32_to_cpu(ci->i_layout.fl_pg_pool);
-                nl.preferred_osd =
-                                (s32)le32_to_cpu(ci->i_layout.fl_pg_preferred);
-        } else
+        if (err)
                 return err;
 
+        memset(&nl, 0, sizeof(nl));
         if (l.stripe_count)
                 nl.stripe_count = l.stripe_count;
+        else
+                nl.stripe_count = ceph_file_layout_stripe_count(ci->i_layout);
         if (l.stripe_unit)
                 nl.stripe_unit = l.stripe_unit;
+        else
+                nl.stripe_unit = ceph_file_layout_su(ci->i_layout);
         if (l.object_size)
                 nl.object_size = l.object_size;
+        else
+                nl.object_size = ceph_file_layout_object_size(ci->i_layout);
         if (l.data_pool)
                 nl.data_pool = l.data_pool;
-        if (l.preferred_osd)
-                nl.preferred_osd = l.preferred_osd;
+        else
+                nl.data_pool = ceph_file_layout_pg_pool(ci->i_layout);
 
-        if ((nl.object_size & ~PAGE_MASK) ||
-            (nl.stripe_unit & ~PAGE_MASK) ||
-            ((unsigned)nl.object_size % (unsigned)nl.stripe_unit))
-                return -EINVAL;
+        /* this is obsolete, and always -1 */
+        nl.preferred_osd = le64_to_cpu(-1);
 
-        /* make sure it's a valid data pool */
-        if (l.data_pool > 0) {
-                mutex_lock(&mdsc->mutex);
-                err = -EINVAL;
-                for (i = 0; i < mdsc->mdsmap->m_num_data_pg_pools; i++)
-                        if (mdsc->mdsmap->m_data_pg_pools[i] == l.data_pool) {
-                                err = 0;
-                                break;
-                        }
-                mutex_unlock(&mdsc->mutex);
-                if (err)
-                        return err;
-        }
+        err = __validate_layout(mdsc, &nl);
+        if (err)
+                return err;
 
         req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETLAYOUT,
                                        USE_AUTH_MDS);
@@ -106,8 +119,6 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg)
         req->r_args.setlayout.layout.fl_object_size =
                 cpu_to_le32(l.object_size);
         req->r_args.setlayout.layout.fl_pg_pool = cpu_to_le32(l.data_pool);
-        req->r_args.setlayout.layout.fl_pg_preferred =
-                cpu_to_le32(l.preferred_osd);
 
         parent_inode = ceph_get_dentry_parent_inode(file->f_dentry);
         err = ceph_mdsc_do_request(mdsc, parent_inode, req);
@@ -127,33 +138,16 @@ static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg)
         struct inode *inode = file->f_dentry->d_inode;
         struct ceph_mds_request *req;
         struct ceph_ioctl_layout l;
-        int err, i;
+        int err;
         struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
 
         /* copy and validate */
         if (copy_from_user(&l, arg, sizeof(l)))
                 return -EFAULT;
 
-        if ((l.object_size & ~PAGE_MASK) ||
-            (l.stripe_unit & ~PAGE_MASK) ||
-            !l.stripe_unit ||
-            (l.object_size &&
-                (unsigned)l.object_size % (unsigned)l.stripe_unit))
-                return -EINVAL;
-
-        /* make sure it's a valid data pool */
-        if (l.data_pool > 0) {
-                mutex_lock(&mdsc->mutex);
-                err = -EINVAL;
-                for (i = 0; i < mdsc->mdsmap->m_num_data_pg_pools; i++)
-                        if (mdsc->mdsmap->m_data_pg_pools[i] == l.data_pool) {
-                                err = 0;
-                                break;
-                        }
-                mutex_unlock(&mdsc->mutex);
-                if (err)
-                        return err;
-        }
+        err = __validate_layout(mdsc, &l);
+        if (err)
+                return err;
 
         req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETDIRLAYOUT,
                                        USE_AUTH_MDS);
@@ -171,8 +165,6 @@ static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg)
                         cpu_to_le32(l.object_size);
         req->r_args.setlayout.layout.fl_pg_pool =
                         cpu_to_le32(l.data_pool);
-        req->r_args.setlayout.layout.fl_pg_preferred =
-                        cpu_to_le32(l.preferred_osd);
 
         err = ceph_mdsc_do_request(mdsc, inode, req);
         ceph_mdsc_put_request(req);
diff --git a/fs/ceph/ioctl.h b/fs/ceph/ioctl.h
index be4a6048733..c77028afb1e 100644
--- a/fs/ceph/ioctl.h
+++ b/fs/ceph/ioctl.h
@@ -34,6 +34,8 @@
 struct ceph_ioctl_layout {
         __u64 stripe_unit, stripe_count, object_size;
         __u64 data_pool;
+
+        /* obsolete.  new values ignored, always return -1 */
         __s64 preferred_osd;
 };
 
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 89971e137aa..200bc87eceb 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -334,10 +334,10 @@ void ceph_put_mds_session(struct ceph_mds_session *s)
         dout("mdsc put_session %p %d -> %d\n", s,
              atomic_read(&s->s_ref), atomic_read(&s->s_ref)-1);
         if (atomic_dec_and_test(&s->s_ref)) {
-                if (s->s_authorizer)
+                if (s->s_auth.authorizer)
                      s->s_mdsc->fsc->client->monc.auth->ops->destroy_authorizer(
                              s->s_mdsc->fsc->client->monc.auth,
-                             s->s_authorizer);
+                             s->s_auth.authorizer);
                 kfree(s);
         }
 }
@@ -3395,39 +3395,33 @@ out:
 /*
  * authentication
  */
-static int get_authorizer(struct ceph_connection *con,
-                          void **buf, int *len, int *proto,
-                          void **reply_buf, int *reply_len, int force_new)
+
+/*
+ * Note: returned pointer is the address of a structure that's
+ * managed separately.  Caller must *not* attempt to free it.
+ */
+static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
+                                        int *proto, int force_new)
 {
         struct ceph_mds_session *s = con->private;
         struct ceph_mds_client *mdsc = s->s_mdsc;
         struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth;
-        int ret = 0;
-
-        if (force_new && s->s_authorizer) {
-                ac->ops->destroy_authorizer(ac, s->s_authorizer);
-                s->s_authorizer = NULL;
-        }
-        if (s->s_authorizer == NULL) {
-                if (ac->ops->create_authorizer) {
-                        ret = ac->ops->create_authorizer(
-                                ac, CEPH_ENTITY_TYPE_MDS,
-                                &s->s_authorizer,
-                                &s->s_authorizer_buf,
-                                &s->s_authorizer_buf_len,
-                                &s->s_authorizer_reply_buf,
-                                &s->s_authorizer_reply_buf_len);
-                        if (ret)
-                                return ret;
-                }
-        }
+        struct ceph_auth_handshake *auth = &s->s_auth;
 
+        if (force_new && auth->authorizer) {
+                if (ac->ops && ac->ops->destroy_authorizer)
+                        ac->ops->destroy_authorizer(ac, auth->authorizer);
+                auth->authorizer = NULL;
+        }
+        if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) {
+                int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_MDS,
+                                                        auth);
+                if (ret)
+                        return ERR_PTR(ret);
+        }
         *proto = ac->protocol;
-        *buf = s->s_authorizer_buf;
-        *len = s->s_authorizer_buf_len;
-        *reply_buf = s->s_authorizer_reply_buf;
-        *reply_len = s->s_authorizer_reply_buf_len;
-        return 0;
+
+        return auth;
 }
 
 
@@ -3437,7 +3431,7 @@ static int verify_authorizer_reply(struct ceph_connection *con, int len)
         struct ceph_mds_client *mdsc = s->s_mdsc;
         struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth;
 
-        return ac->ops->verify_authorizer_reply(ac, s->s_authorizer, len);
+        return ac->ops->verify_authorizer_reply(ac, s->s_auth.authorizer, len);
 }
 
 static int invalidate_authorizer(struct ceph_connection *con)
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h
index 8c7c04ebb59..dd26846dd71 100644
--- a/fs/ceph/mds_client.h
+++ b/fs/ceph/mds_client.h
@@ -11,6 +11,7 @@
 #include <linux/ceph/types.h>
 #include <linux/ceph/messenger.h>
 #include <linux/ceph/mdsmap.h>
+#include <linux/ceph/auth.h>
 
 /*
  * Some lock dependencies:
@@ -113,9 +114,7 @@ struct ceph_mds_session {
 
         struct ceph_connection s_con;
 
-        struct ceph_authorizer *s_authorizer;
-        void             *s_authorizer_buf, *s_authorizer_reply_buf;
-        size_t            s_authorizer_buf_len, s_authorizer_reply_buf_len;
+        struct ceph_auth_handshake s_auth;
 
         /* protected by s_gen_ttl_lock */
         spinlock_t        s_gen_ttl_lock;
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 35b86331d8a..785cb3057c9 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -118,15 +118,6 @@ static size_t ceph_vxattrcb_file_layout(struct ceph_inode_info *ci, char *val,
                 (unsigned long long)ceph_file_layout_su(ci->i_layout),
                 (unsigned long long)ceph_file_layout_stripe_count(ci->i_layout),
                 (unsigned long long)ceph_file_layout_object_size(ci->i_layout));
-
-        if (ceph_file_layout_pg_preferred(ci->i_layout) >= 0) {
-                val += ret;
-                size -= ret;
-                ret += snprintf(val, size, "preferred_osd=%lld\n",
-                            (unsigned long long)ceph_file_layout_pg_preferred(
-                                    ci->i_layout));
-        }
-
         return ret;
 }