Merge tag 'for-6.15-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:

 - handle encoded read ioctl returning EAGAIN so it does not mistakenly
   free the work structure

 - escape subvolume path in mount option list so it cannot be wrongly
   parsed when the path contains ","

 - remove folio size assertions when writing super block to device with
   enabled large folios

* tag 'for-6.15-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: remove folio order ASSERT()s in super block writeback path
  btrfs: correctly escape subvol in btrfs_show_options()
  btrfs: ioctl: don't free iov when btrfs_encoded_read() returns -EAGAIN

Author: torvalds

fs/btrfs/disk-io.c

@@ -3853,7 +3853,6 @@ static int write_dev_supers(struct btrfs_device *device,
 			atomic_inc(&device->sb_write_errors);
 			continue;
 		}
-		ASSERT(folio_order(folio) == 0);
 
 		offset = offset_in_folio(folio, bytenr);
 		disk_super = folio_address(folio) + offset;
@@ -3926,7 +3925,6 @@ static int wait_dev_supers(struct btrfs_device *device, int max_mirrors)
 		/* If the folio has been removed, then we know it completed. */
 		if (IS_ERR(folio))
 			continue;
-		ASSERT(folio_order(folio) == 0);
 
 		/* Folio will be unlocked once the write completes. */
 		folio_wait_locked(folio);

fs/btrfs/ioctl.c

@@ -4902,6 +4902,8 @@ static int btrfs_uring_encoded_read(struct io_uring_cmd *cmd, unsigned int issue
 
 	ret = btrfs_encoded_read(&kiocb, &data->iter, &data->args, &cached_state,
 				 &disk_bytenr, &disk_io_size);
+	if (ret == -EAGAIN)
+		goto out_acct;
 	if (ret < 0 && ret != -EIOCBQUEUED)
 		goto out_free;
 

fs/btrfs/super.c

@@ -1139,8 +1139,7 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
 	subvol_name = btrfs_get_subvol_name_from_objectid(info,
 			btrfs_root_id(BTRFS_I(d_inode(dentry))->root));
 	if (!IS_ERR(subvol_name)) {
-		seq_puts(seq, ",subvol=");
-		seq_escape(seq, subvol_name, " \t\n\\");
+		seq_show_option(seq, "subvol", subvol_name);
 		kfree(subvol_name);
 	}
 	return 0;