[PATCH 16/23] Btrfs: device path change must be logged
From: Anand Jain <hidden>
Date: 2015-08-14 10:33:47
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
From the issue diagnosable point of view, log if the device path is
changed. Signed-off-by: Anand Jain <redacted> --- fs/btrfs/volumes.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index ebf37a9..dcb10fa 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c@@ -595,6 +595,10 @@ static noinline int device_list_add(const char *path, return -EEXIST; } + printk_in_rcu(KERN_INFO \ + "BTRFS: device fsid %pU devid %llu old path %s new path %s\n", + disk_super->fsid, devid, rcu_str_deref(device->name), path); + name = rcu_string_strdup(path, GFP_NOFS); if (!name) return -ENOMEM;
--
2.4.1