Merge tag 'ceph-for-6.7-rc1' of https://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:

 - support for idmapped mounts in CephFS (Christian Brauner, Alexander
   Mikhalitsyn).

   The series was originally developed by Christian and later picked up
   and brought over the finish line by Alexander, who also contributed
   an enabler on the MDS side (separate owner_{u,g}id fields on the
   wire).

   The required exports for mnt_idmap_{get,put}() in VFS have been acked
   by Christian and received no objection from Christoph.

 - a churny change in CephFS logging to include cluster and client
   identifiers in log and debug messages (Xiubo Li).

   This would help in scenarios with dozens of CephFS mounts on the same
   node which are getting increasingly common, especially in the
   Kubernetes world.

* tag 'ceph-for-6.7-rc1' of https://github.com/ceph/ceph-client:
  ceph: allow idmapped mounts
  ceph: allow idmapped atomic_open inode op
  ceph: allow idmapped set_acl inode op
  ceph: allow idmapped setattr inode op
  ceph: pass idmap to __ceph_setattr
  ceph: allow idmapped permission inode op
  ceph: allow idmapped getattr inode op
  ceph: pass an idmapping to mknod/symlink/mkdir
  ceph: add enable_unsafe_idmap module parameter
  ceph: handle idmapped mounts in create_request_message()
  ceph: stash idmapping in mdsc request
  fs: export mnt_idmap_get/mnt_idmap_put
  libceph, ceph: move mdsmap.h to fs/ceph
  ceph: print cluster fsid and client global_id in all debug logs
  ceph: rename _to_client() to _to_fs_client()
  ceph: pass the mdsc to several helpers
  libceph: add doutc and *_client debug macros support

4 files changed, 50 insertions, 73 deletions

diff --git a/include/linux/ceph/ceph_debug.h b/include/linux/ceph/ceph_debug.h
index d5a5da838caf..11a92a946016 100644
--- a/include/linux/ceph/ceph_debug.h
+++ b/include/linux/ceph/ceph_debug.h
@@ -19,12 +19,25 @@
 	pr_debug("%.*s %12.12s:%-4d : " fmt,				\
 		 8 - (int)sizeof(KBUILD_MODNAME), "    ",		\
 		 kbasename(__FILE__), __LINE__, ##__VA_ARGS__)
+#  define doutc(client, fmt, ...)					\
+	pr_debug("%.*s %12.12s:%-4d : [%pU %llu] " fmt,			\
+		 8 - (int)sizeof(KBUILD_MODNAME), "    ",		\
+		 kbasename(__FILE__), __LINE__,				\
+		 &client->fsid, client->monc.auth->global_id,		\
+		 ##__VA_ARGS__)
 # else
 /* faux printk call just to see any compiler warnings. */
 #  define dout(fmt, ...)	do {				\
 		if (0)						\
 			printk(KERN_DEBUG fmt, ##__VA_ARGS__);	\
 	} while (0)
+#  define doutc(client, fmt, ...)	do {			\
+		if (0)						\
+			printk(KERN_DEBUG "[%pU %llu] " fmt,	\
+			&client->fsid,				\
+			client->monc.auth->global_id,		\
+			##__VA_ARGS__);				\
+		} while (0)
 # endif
 
 #else
@@ -33,7 +46,32 @@
  * or, just wrap pr_debug
  */
 # define dout(fmt, ...)	pr_debug(" " fmt, ##__VA_ARGS__)
+# define doutc(client, fmt, ...)					\
+	pr_debug(" [%pU %llu] %s: " fmt, &client->fsid,			\
+		 client->monc.auth->global_id, __func__, ##__VA_ARGS__)
 
 #endif
 
+#define pr_notice_client(client, fmt, ...)				\
+	pr_notice("[%pU %llu]: " fmt, &client->fsid,			\
+		  client->monc.auth->global_id, ##__VA_ARGS__)
+#define pr_info_client(client, fmt, ...)				\
+	pr_info("[%pU %llu]: " fmt, &client->fsid,			\
+		client->monc.auth->global_id, ##__VA_ARGS__)
+#define pr_warn_client(client, fmt, ...)				\
+	pr_warn("[%pU %llu]: " fmt, &client->fsid,			\
+		client->monc.auth->global_id, ##__VA_ARGS__)
+#define pr_warn_once_client(client, fmt, ...)				\
+	pr_warn_once("[%pU %llu]: " fmt, &client->fsid,			\
+		     client->monc.auth->global_id, ##__VA_ARGS__)
+#define pr_err_client(client, fmt, ...)					\
+	pr_err("[%pU %llu]: " fmt, &client->fsid,			\
+	       client->monc.auth->global_id, ##__VA_ARGS__)
+#define pr_warn_ratelimited_client(client, fmt, ...)			\
+	pr_warn_ratelimited("[%pU %llu]: " fmt, &client->fsid,		\
+			    client->monc.auth->global_id, ##__VA_ARGS__)
+#define pr_err_ratelimited_client(client, fmt, ...)			\
+	pr_err_ratelimited("[%pU %llu]: " fmt, &client->fsid,		\
+			   client->monc.auth->global_id, ##__VA_ARGS__)
+
 #endif
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index f3b3593254b9..ee1d0e5f9789 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -357,6 +357,11 @@ enum {
 	CEPH_MDS_OP_RENAMESNAP = 0x01403,
 };
 
+#define IS_CEPH_MDS_OP_NEWINODE(op) (op == CEPH_MDS_OP_CREATE     || \
+				     op == CEPH_MDS_OP_MKNOD      || \
+				     op == CEPH_MDS_OP_MKDIR      || \
+				     op == CEPH_MDS_OP_SYMLINK)
+
 extern const char *ceph_mds_op_name(int op);
 
 #define CEPH_SETATTR_MODE              (1 << 0)
@@ -497,7 +502,7 @@ struct ceph_mds_request_head_legacy {
 	union ceph_mds_request_args args;
 } __attribute__ ((packed));
 
-#define CEPH_MDS_REQUEST_HEAD_VERSION  2
+#define CEPH_MDS_REQUEST_HEAD_VERSION  3
 
 struct ceph_mds_request_head_old {
 	__le16 version;                /* struct version */
@@ -528,6 +533,9 @@ struct ceph_mds_request_head {
 
 	__le32 ext_num_retry;          /* new count retry attempts */
 	__le32 ext_num_fwd;            /* new count fwd attempts */
+
+	__le32 struct_len;             /* to store size of struct ceph_mds_request_head */
+	__le32 owner_uid, owner_gid;   /* used for OPs which create inodes */
 } __attribute__ ((packed));
 
 /* cap/lease release record */
diff --git a/include/linux/ceph/mdsmap.h b/include/linux/ceph/mdsmap.h
deleted file mode 100644
index 4c3e0648dc27..000000000000
--- a/include/linux/ceph/mdsmap.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _FS_CEPH_MDSMAP_H
-#define _FS_CEPH_MDSMAP_H
-
-#include <linux/bug.h>
-#include <linux/ceph/types.h>
-
-/*
- * mds map - describe servers in the mds cluster.
- *
- * we limit fields to those the client actually xcares about
- */
-struct ceph_mds_info {
-	u64 global_id;
-	struct ceph_entity_addr addr;
-	s32 state;
-	int num_export_targets;
-	bool laggy;
-	u32 *export_targets;
-};
-
-struct ceph_mdsmap {
-	u32 m_epoch, m_client_epoch, m_last_failure;
-	u32 m_root;
-	u32 m_session_timeout;          /* seconds */
-	u32 m_session_autoclose;        /* seconds */
-	u64 m_max_file_size;
-	u64 m_max_xattr_size;		/* maximum size for xattrs blob */
-	u32 m_max_mds;			/* expected up:active mds number */
-	u32 m_num_active_mds;		/* actual up:active mds number */
-	u32 possible_max_rank;		/* possible max rank index */
-	struct ceph_mds_info *m_info;
-
-	/* which object pools file data can be stored in */
-	int m_num_data_pg_pools;
-	u64 *m_data_pg_pools;
-	u64 m_cas_pg_pool;
-
-	bool m_enabled;
-	bool m_damaged;
-	int m_num_laggy;
-};
-
-static inline struct ceph_entity_addr *
-ceph_mdsmap_get_addr(struct ceph_mdsmap *m, int w)
-{
-	if (w >= m->possible_max_rank)
-		return NULL;
-	return &m->m_info[w].addr;
-}
-
-static inline int ceph_mdsmap_get_state(struct ceph_mdsmap *m, int w)
-{
-	BUG_ON(w < 0);
-	if (w >= m->possible_max_rank)
-		return CEPH_MDS_STATE_DNE;
-	return m->m_info[w].state;
-}
-
-static inline bool ceph_mdsmap_is_laggy(struct ceph_mdsmap *m, int w)
-{
-	if (w >= 0 && w < m->possible_max_rank)
-		return m->m_info[w].laggy;
-	return false;
-}
-
-extern int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m);
-struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end, bool msgr2);
-extern void ceph_mdsmap_destroy(struct ceph_mdsmap *m);
-extern bool ceph_mdsmap_is_cluster_available(struct ceph_mdsmap *m);
-
-#endif
diff --git a/include/linux/mnt_idmapping.h b/include/linux/mnt_idmapping.h
index 057c89867aa2..b8da2db4ecd2 100644
--- a/include/linux/mnt_idmapping.h
+++ b/include/linux/mnt_idmapping.h
@@ -115,6 +115,9 @@ static inline bool vfsgid_eq_kgid(vfsgid_t vfsgid, kgid_t kgid)
 
 int vfsgid_in_group_p(vfsgid_t vfsgid);
 
+struct mnt_idmap *mnt_idmap_get(struct mnt_idmap *idmap);
+void mnt_idmap_put(struct mnt_idmap *idmap);
+
 vfsuid_t make_vfsuid(struct mnt_idmap *idmap,
 		     struct user_namespace *fs_userns, kuid_t kuid);