Commit f753c4ec authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 

Pull ceph fixes from Sage Weil:
 "Jim's fix closes a narrow race introduced with the msgr changes.  One
  fix resolves problems with debugfs initialization that Yan found when
  multiple client instances are created (e.g., two clusters mounted, or
  rbd + cephfs), another one fixes problems with mounting a nonexistent
  server subdirectory, and the last one fixes a divide by zero error
  from unsanitized ioctl input that Dan Carpenter found."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: avoid divide by zero in __validate_layout()
  libceph: avoid truncation due to racing banners
  ceph: tolerate (and warn on) extraneous dentry from mds
  libceph: delay debugfs initialization until we learn global_id
parents ad746be9 45f2e081

fs/ceph/debugfs.c

+1 −0
Original line number Diff line number Diff line
@@ -201,6 +201,7 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc) 
	int err = -ENOMEM;



	dout("ceph_fs_debugfs_init\n");

	BUG_ON(!fsc->client->debugfs_dir);

	fsc->debugfs_congestion_kb =

		debugfs_create_file("writeback_congestion_kb",

				    0600,

fs/ceph/inode.c

+10 −5
Original line number Diff line number Diff line
@@ -992,11 +992,15 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, 
	if (rinfo->head->is_dentry) {

		struct inode *dir = req->r_locked_dir;



		if (dir) {

			err = fill_inode(dir, &rinfo->diri, rinfo->dirfrag,

					 session, req->r_request_started, -1,

					 &req->r_caps_reservation);

			if (err < 0)

				return err;

		} else {

			WARN_ON_ONCE(1);

		}

	}



	/*
@@ -1004,6 +1008,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, 
	 * will have trouble splicing in the virtual snapdir later

	 */

	if (rinfo->head->is_dentry && !req->r_aborted &&

	    req->r_locked_dir &&

	    (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name,

					       fsc->mount_options->snapdir_name,

					       req->r_dentry->d_name.len))) {

fs/ceph/ioctl.c

+2 −1
Original line number Diff line number Diff line
@@ -42,7 +42,8 @@ static long __validate_layout(struct ceph_mds_client *mdsc, 
	/* validate striping parameters */

	if ((l->object_size & ~PAGE_MASK) ||

	    (l->stripe_unit & ~PAGE_MASK) ||

	    ((unsigned)l->object_size % (unsigned)l->stripe_unit))

	    (l->stripe_unit != 0 &&

	     ((unsigned)l->object_size % (unsigned)l->stripe_unit)))

		return -EINVAL;



	/* make sure it's a valid data pool */

net/ceph/ceph_common.c

+0 −1
Original line number Diff line number Diff line
@@ -84,7 +84,6 @@ int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid) 
			return -1;

		}

	} else {

		pr_info("client%lld fsid %pU\n", ceph_client_id(client), fsid);

		memcpy(&client->fsid, fsid, sizeof(*fsid));

	}

	return 0;

net/ceph/debugfs.c

+4 −0
Original line number Diff line number Diff line
@@ -189,6 +189,9 @@ int ceph_debugfs_client_init(struct ceph_client *client) 
	snprintf(name, sizeof(name), "%pU.client%lld", &client->fsid,

		 client->monc.auth->global_id);



	dout("ceph_debugfs_client_init %p %s\n", client, name);



	BUG_ON(client->debugfs_dir);

	client->debugfs_dir = debugfs_create_dir(name, ceph_debugfs_dir);

	if (!client->debugfs_dir)

		goto out;
@@ -234,6 +237,7 @@ out: 


void ceph_debugfs_client_cleanup(struct ceph_client *client)

{

	dout("ceph_debugfs_client_cleanup %p\n", client);

	debugfs_remove(client->debugfs_osdmap);

	debugfs_remove(client->debugfs_monmap);

	debugfs_remove(client->osdc.debugfs_file);

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