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Commit 494ddd11 authored by majianpeng's avatar majianpeng Committed by Sage Weil
Browse files

ceph: Don't forget the 'up_read(&osdc->map_sem)' if met error. 



CC: stable@vger.kernel.org
Signed-off-by: default avatarJianpeng Ma <majianpeng@gmail.com>
Reviewed-by: default avatarSage Weil <sage@inktank.com>
parent 8b8cf891

fs/ceph/ioctl.c

+3 −1
Original line number Diff line number Diff line
@@ -196,8 +196,10 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg) 
	r = ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, len,

					  &dl.object_no, &dl.object_offset,

					  &olen);

	if (r < 0)

	if (r < 0) {

		up_read(&osdc->map_sem);

		return -EIO;

	}

	dl.file_offset -= dl.object_offset;

	dl.object_size = ceph_file_layout_object_size(ci->i_layout);

	dl.block_size = ceph_file_layout_su(ci->i_layout);