Merge tag 'ceph-for-5.7-rc1' of git://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:
 "The main items are:

   - support for asynchronous create and unlink (Jeff Layton).

     Creates and unlinks are satisfied locally, without waiting for a
     reply from the MDS, provided the client has been granted
     appropriate caps (new in v15.y.z ("Octopus") release). This can be
     a big help for metadata heavy workloads such as tar and rsync.
     Opt-in with the new nowsync mount option.

   - multiple blk-mq queues for rbd (Hannes Reinecke and myself).

     When the driver was converted to blk-mq, we settled on a single
     blk-mq queue because of a global lock in libceph and some other
     technical debt. These have since been addressed, so allocate a
     queue per CPU to enhance parallelism.

   - don't hold onto caps that aren't actually needed (Zheng Yan).

     This has been our long-standing behavior, but it causes issues with
     some active/standby applications (synchronous I/O, stalls if the
     standby goes down, etc).

   - .snap directory timestamps consistent with ceph-fuse (Luis
     Henriques)"

* tag 'ceph-for-5.7-rc1' of git://github.com/ceph/ceph-client: (49 commits)
  ceph: fix snapshot directory timestamps
  ceph: wait for async creating inode before requesting new max size
  ceph: don't skip updating wanted caps when cap is stale
  ceph: request new max size only when there is auth cap
  ceph: cleanup return error of try_get_cap_refs()
  ceph: return ceph_mdsc_do_request() errors from __get_parent()
  ceph: check all mds' caps after page writeback
  ceph: update i_requested_max_size only when sending cap msg to auth mds
  ceph: simplify calling of ceph_get_fmode()
  ceph: remove delay check logic from ceph_check_caps()
  ceph: consider inode's last read/write when calculating wanted caps
  ceph: always renew caps if mds_wanted is insufficient
  ceph: update dentry lease for async create
  ceph: attempt to do async create when possible
  ceph: cache layout in parent dir on first sync create
  ceph: add new MDS req field to hold delegated inode number
  ceph: decode interval_sets for delegated inos
  ceph: make ceph_fill_inode non-static
  ceph: perform asynchronous unlink if we have sufficient caps
  ceph: don't take refs to want mask unless we have all bits
  ...

4 files changed, 17 insertions, 33 deletions

diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index cb21c5cf12c3..ebf5ba62b772 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -444,8 +444,9 @@ union ceph_mds_request_args {
 	} __attribute__ ((packed)) lookupino;
 } __attribute__ ((packed));
 
-#define CEPH_MDS_FLAG_REPLAY        1  /* this is a replayed op */
-#define CEPH_MDS_FLAG_WANT_DENTRY   2  /* want dentry in reply */
+#define CEPH_MDS_FLAG_REPLAY		1 /* this is a replayed op */
+#define CEPH_MDS_FLAG_WANT_DENTRY	2 /* want dentry in reply */
+#define CEPH_MDS_FLAG_ASYNC		4 /* request is asynchronous */
 
 struct ceph_mds_request_head {
 	__le64 oldest_client_tid;
@@ -530,6 +531,9 @@ struct ceph_mds_reply_lease {
 	__le32 seq;
 } __attribute__ ((packed));
 
+#define CEPH_LEASE_VALID        (1 | 2) /* old and new bit values */
+#define CEPH_LEASE_PRIMARY_LINK 4       /* primary linkage */
+
 struct ceph_mds_reply_dirfrag {
 	__le32 frag;            /* fragment */
 	__le32 auth;            /* auth mds, if this is a delegation point */
@@ -564,6 +568,7 @@ struct ceph_filelock {
 #define CEPH_FILE_MODE_RDWR       3  /* RD | WR */
 #define CEPH_FILE_MODE_LAZY       4  /* lazy io */
 #define CEPH_FILE_MODE_BITS       4
+#define CEPH_FILE_MODE_MASK       ((1 << CEPH_FILE_MODE_BITS) - 1)
 
 int ceph_flags_to_mode(int flags);
 
@@ -655,10 +660,19 @@ int ceph_flags_to_mode(int flags);
 #define CEPH_CAP_ANY      (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \
 			   CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \
 			   CEPH_CAP_PIN)
+#define CEPH_CAP_ALL_FILE (CEPH_CAP_PIN | CEPH_CAP_ANY_SHARED | \
+			   CEPH_CAP_AUTH_EXCL | CEPH_CAP_XATTR_EXCL | \
+			   CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR)
 
 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \
 			CEPH_LOCK_IXATTR)
 
+/* cap masks async dir operations */
+#define CEPH_CAP_DIR_CREATE	CEPH_CAP_FILE_CACHE
+#define CEPH_CAP_DIR_UNLINK	CEPH_CAP_FILE_RD
+#define CEPH_CAP_ANY_DIR_OPS	(CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD | \
+				 CEPH_CAP_FILE_WREXTEND | CEPH_CAP_FILE_LAZYIO)
+
 int ceph_caps_for_mode(int mode);
 
 enum {
diff --git a/include/linux/ceph/debugfs.h b/include/linux/ceph/debugfs.h
index cf5e840eec71..8b3a1a7a953a 100644
--- a/include/linux/ceph/debugfs.h
+++ b/include/linux/ceph/debugfs.h
@@ -2,22 +2,8 @@
 #ifndef _FS_CEPH_DEBUGFS_H
 #define _FS_CEPH_DEBUGFS_H
 
-#include <linux/ceph/ceph_debug.h>
 #include <linux/ceph/types.h>
 
-#define CEPH_DEFINE_SHOW_FUNC(name)					\
-static int name##_open(struct inode *inode, struct file *file)		\
-{									\
-	return single_open(file, name, inode->i_private);		\
-}									\
-									\
-static const struct file_operations name##_fops = {			\
-	.open		= name##_open,					\
-	.read		= seq_read,					\
-	.llseek		= seq_lseek,					\
-	.release	= single_release,				\
-};
-
 /* debugfs.c */
 extern void ceph_debugfs_init(void);
 extern void ceph_debugfs_cleanup(void);
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index ec73ebc4827d..525b7c3f1c81 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -272,6 +272,7 @@ extern struct kmem_cache *ceph_cap_flush_cachep;
 extern struct kmem_cache *ceph_dentry_cachep;
 extern struct kmem_cache *ceph_file_cachep;
 extern struct kmem_cache *ceph_dir_file_cachep;
+extern struct kmem_cache *ceph_mds_request_cachep;
 
 /* ceph_common.c */
 extern bool libceph_compatible(void *data);
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index 5a62dbd3f4c2..9d9f745b98a1 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -509,23 +509,6 @@ int ceph_osdc_call(struct ceph_osd_client *osdc,
 		   struct page *req_page, size_t req_len,
 		   struct page **resp_pages, size_t *resp_len);
 
-extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
-			       struct ceph_vino vino,
-			       struct ceph_file_layout *layout,
-			       u64 off, u64 *plen,
-			       u32 truncate_seq, u64 truncate_size,
-			       struct page **pages, int nr_pages,
-			       int page_align);
-
-extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
-				struct ceph_vino vino,
-				struct ceph_file_layout *layout,
-				struct ceph_snap_context *sc,
-				u64 off, u64 len,
-				u32 truncate_seq, u64 truncate_size,
-				struct timespec64 *mtime,
-				struct page **pages, int nr_pages);
-
 int ceph_osdc_copy_from(struct ceph_osd_client *osdc,
 			u64 src_snapid, u64 src_version,
 			struct ceph_object_id *src_oid,