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

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CC: stable@vger.kernel.org
Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Reviewed-by: Sage Weil <sage@inktank.com>
This commit is contained in:
majianpeng 2013-07-16 19:36:21 +08:00 committed by Sage Weil
parent 8b8cf8917f
commit 494ddd11be
1 changed files with 3 additions and 1 deletions
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4
fs/ceph/ioctl.c
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@ -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);