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ceph: Add check returned value on func ceph_calc_ceph_pg. 

Func ceph_calc_ceph_pg maybe failed.So add check for returned value.

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Reviewed-by: Sage Weil <sage@inktank.com>
Signed-off-by: Sage Weil <sage@inktank.com>
This commit is contained in:
majianpeng 2013-08-02 18:14:48 +08:00 committed by Sage Weil
parent 7ab9b38070
commit 2fbcbff1d6
1 changed files with 6 additions and 2 deletions
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8
fs/ceph/ioctl.c
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@ -211,8 +211,12 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
snprintf(dl.object_name, sizeof(dl.object_name), "%llx.%08llx",
ceph_ino(inode), dl.object_no);
ceph_calc_ceph_pg(&pgid, dl.object_name, osdc->osdmap,
ceph_file_layout_pg_pool(ci->i_layout));
r = ceph_calc_ceph_pg(&pgid, dl.object_name, osdc->osdmap,
ceph_file_layout_pg_pool(ci->i_layout));
if (r < 0) {
up_read(&osdc->map_sem);
return r;
}
dl.osd = ceph_calc_pg_primary(osdc->osdmap, pgid);
if (dl.osd >= 0) {