Merge tag 'ceph-for-5.2-rc1' of git://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:
 "On the filesystem side we have:

   - a fix to enforce quotas set above the mount point (Luis Henriques)

   - support for exporting snapshots through NFS (Zheng Yan)

   - proper statx implementation (Jeff Layton). statx flags are mapped
     to MDS caps, with AT_STATX_{DONT,FORCE}_SYNC taken into account.

   - some follow-up dentry name handling fixes, in particular
     elimination of our hand-rolled helper and the switch to __getname()
     as suggested by Al (Jeff Layton)

   - a set of MDS client cleanups in preparation for async MDS requests
     in the future (Jeff Layton)

   - a fix to sync the filesystem before remounting (Jeff Layton)

  On the rbd side, work is on-going on object-map and fast-diff image
  features"

* tag 'ceph-for-5.2-rc1' of git://github.com/ceph/ceph-client: (29 commits)
  ceph: flush dirty inodes before proceeding with remount
  ceph: fix unaligned access in ceph_send_cap_releases
  libceph: make ceph_pr_addr take an struct ceph_entity_addr pointer
  libceph: fix unaligned accesses in ceph_entity_addr handling
  rbd: don't assert on writes to snapshots
  rbd: client_mutex is never nested
  ceph: print inode number in __caps_issued_mask debugging messages
  ceph: just call get_session in __ceph_lookup_mds_session
  ceph: simplify arguments and return semantics of try_get_cap_refs
  ceph: fix comment over ceph_drop_caps_for_unlink
  ceph: move wait for mds request into helper function
  ceph: have ceph_mdsc_do_request call ceph_mdsc_submit_request
  ceph: after an MDS request, do callback and completions
  ceph: use pathlen values returned by set_request_path_attr
  ceph: use __getname/__putname in ceph_mdsc_build_path
  ceph: use ceph_mdsc_build_path instead of clone_dentry_name
  ceph: fix potential use-after-free in ceph_mdsc_build_path
  ceph: dump granular cap info in "caps" debugfs file
  ceph: make iterate_session_caps a public symbol
  ceph: fix NULL pointer deref when debugging is enabled
  ...

3 files changed, 14 insertions, 8 deletions

diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index 4903deb0777a..3ac0feaf2b5e 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -436,6 +436,12 @@ union ceph_mds_request_args {
 		__le64 length; /* num bytes to lock from start */
 		__u8 wait; /* will caller wait for lock to become available? */
 	} __attribute__ ((packed)) filelock_change;
+	struct {
+		__le32 mask;                 /* CEPH_CAP_* */
+		__le64 snapid;
+		__le64 parent;
+		__le32 hash;
+	} __attribute__ ((packed)) lookupino;
 } __attribute__ ((packed));
 
 #define CEPH_MDS_FLAG_REPLAY        1  /* this is a replayed op */
diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index 800a2128d411..23895d178149 100644
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -323,7 +323,8 @@ struct ceph_connection {
 };
 
 
-extern const char *ceph_pr_addr(const struct sockaddr_storage *ss);
+extern const char *ceph_pr_addr(const struct ceph_entity_addr *addr);
+
 extern int ceph_parse_ips(const char *c, const char *end,
 			  struct ceph_entity_addr *addr,
 			  int max_count, int *count);
diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
index 5675b1f09bc5..e081b56f1c1d 100644
--- a/include/linux/ceph/osdmap.h
+++ b/include/linux/ceph/osdmap.h
@@ -110,17 +110,16 @@ struct ceph_object_id {
 	int name_len;
 };
 
+#define __CEPH_OID_INITIALIZER(oid) { .name = (oid).inline_name }
+
+#define CEPH_DEFINE_OID_ONSTACK(oid)				\
+	struct ceph_object_id oid = __CEPH_OID_INITIALIZER(oid)
+
 static inline void ceph_oid_init(struct ceph_object_id *oid)
 {
-	oid->name = oid->inline_name;
-	oid->name_len = 0;
+	*oid = (struct ceph_object_id) __CEPH_OID_INITIALIZER(*oid);
 }
 
-#define CEPH_OID_INIT_ONSTACK(oid)					\
-    ({ ceph_oid_init(&oid); oid; })
-#define CEPH_DEFINE_OID_ONSTACK(oid)					\
-	struct ceph_object_id oid = CEPH_OID_INIT_ONSTACK(oid)
-
 static inline bool ceph_oid_empty(const struct ceph_object_id *oid)
 {
 	return oid->name == oid->inline_name && !oid->name_len;