Merge tag 'ceph-for-4.20-rc1' of git://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:
 "The highlights are:

   - a series that fixes some old memory allocation issues in libceph
     (myself). We no longer allocate memory in places where allocation
     failures cannot be handled and BUG when the allocation fails.

   - support for copy_file_range() syscall (Luis Henriques). If size and
     alignment conditions are met, it leverages RADOS copy-from
     operation. Otherwise, a local copy is performed.

   - a patch that reduces memory requirement of ceph_sync_read() from
     the size of the entire read to the size of one object (Zheng Yan).

   - fallocate() syscall is now restricted to FALLOC_FL_PUNCH_HOLE (Luis
     Henriques)"

* tag 'ceph-for-4.20-rc1' of git://github.com/ceph/ceph-client: (25 commits)
  ceph: new mount option to disable usage of copy-from op
  ceph: support copy_file_range file operation
  libceph: support the RADOS copy-from operation
  ceph: add non-blocking parameter to ceph_try_get_caps()
  libceph: check reply num_data_items in setup_request_data()
  libceph: preallocate message data items
  libceph, rbd, ceph: move ceph_osdc_alloc_messages() calls
  libceph: introduce alloc_watch_request()
  libceph: assign cookies in linger_submit()
  libceph: enable fallback to ceph_msg_new() in ceph_msgpool_get()
  ceph: num_ops is off by one in ceph_aio_retry_work()
  libceph: no need to call osd_req_opcode_valid() in osd_req_encode_op()
  ceph: set timeout conditionally in __cap_delay_requeue
  libceph: don't consume a ref on pagelist in ceph_msg_data_add_pagelist()
  libceph: introduce ceph_pagelist_alloc()
  libceph: osd_req_op_cls_init() doesn't need to take opcode
  libceph: bump CEPH_MSG_MAX_DATA_LEN
  ceph: only allow punch hole mode in fallocate
  ceph: refactor ceph_sync_read()
  ceph: check if LOOKUPNAME request was aborted when filling trace
  ...

1 files changed, 13 insertions, 0 deletions

diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index eab1359d0553..b5ecd6f50360 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -165,6 +165,8 @@ enum {
 	Opt_noacl,
 	Opt_quotadf,
 	Opt_noquotadf,
+	Opt_copyfrom,
+	Opt_nocopyfrom,
 };
 
 static match_table_t fsopt_tokens = {
@@ -203,6 +205,8 @@ static match_table_t fsopt_tokens = {
 	{Opt_noacl, "noacl"},
 	{Opt_quotadf, "quotadf"},
 	{Opt_noquotadf, "noquotadf"},
+	{Opt_copyfrom, "copyfrom"},
+	{Opt_nocopyfrom, "nocopyfrom"},
 	{-1, NULL}
 };
 
@@ -355,6 +359,12 @@ static int parse_fsopt_token(char *c, void *private)
 	case Opt_noquotadf:
 		fsopt->flags |= CEPH_MOUNT_OPT_NOQUOTADF;
 		break;
+	case Opt_copyfrom:
+		fsopt->flags &= ~CEPH_MOUNT_OPT_NOCOPYFROM;
+		break;
+	case Opt_nocopyfrom:
+		fsopt->flags |= CEPH_MOUNT_OPT_NOCOPYFROM;
+		break;
 #ifdef CONFIG_CEPH_FS_POSIX_ACL
 	case Opt_acl:
 		fsopt->sb_flags |= SB_POSIXACL;
@@ -553,6 +563,9 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
 		seq_puts(m, ",noacl");
 #endif
 
+	if (fsopt->flags & CEPH_MOUNT_OPT_NOCOPYFROM)
+		seq_puts(m, ",nocopyfrom");
+
 	if (fsopt->mds_namespace)
 		seq_show_option(m, "mds_namespace", fsopt->mds_namespace);
 	if (fsopt->wsize != CEPH_MAX_WRITE_SIZE)