On thu, 18 Apr 2013 00:17:11 +0200, David Sterba wrote:
On Thu, Apr 11, 2013 at 06:30:16PM +0800, Miao Xie wrote:
In order to avoid this problem, we introduce a lock named super_lock into
the btrfs_fs_info structure. If we want to update incompat/compat flags
of the super block, we must
On Thu, Apr 11, 2013 at 06:30:16PM +0800, Miao Xie wrote:
In order to avoid this problem, we introduce a lock named super_lock into
the btrfs_fs_info structure. If we want to update incompat/compat flags
of the super block, we must hold it.
+ /*
+ * Used to protect the
The following case will make the incompat/compat flag of the super block
be recovered.
Task1 |Task2
flags = btrfs_super_incompat_flags(); |
|flags = btrfs_super_incompat_flags();
flags |= new_flag1;|
