From 2fbcbff1d6b9243ef71c64a8ab993bc3c7bb7af1 Mon Sep 17 00:00:00 2001 From: majianpeng Date: Fri, 2 Aug 2013 18:14:48 +0800 Subject: [PATCH] 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 Reviewed-by: Sage Weil Signed-off-by: Sage Weil --- fs/ceph/ioctl.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index a5ce62e..669622f 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -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) { -- 2.7.4