From 494ddd11be3e2621096bb425eed2886f8e8446d4 Mon Sep 17 00:00:00 2001 From: majianpeng Date: Tue, 16 Jul 2013 19:36:21 +0800 Subject: [PATCH] ceph: Don't forget the 'up_read(&osdc->map_sem)' if met error. CC: stable@vger.kernel.org Signed-off-by: Jianpeng Ma Reviewed-by: Sage Weil --- fs/ceph/ioctl.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index e0b4ef31d3c8..a5ce62eb7806 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -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); -- 2.20.1