push BKL down into ->put_super
Move BKL into ->put_super from the only caller. A couple of
filesystems had trivial enough ->put_super (only kfree and NULLing of
s_fs_info + stuff in there) to not get any locking: coda, cramfs, efs,
hugetlbfs, omfs, qnx4, shmem, all others got the full treatment. Most
of them probably don't need it, but I'd rather sort that out individually.
Preferably after all the other BKL pushdowns in that area.
[AV: original used to move lock_super() down as well; these changes are
removed since we don't do lock_super() at all in generic_shutdown_super()
now]
[AV: fuse, btrfs and xfs are known to need no damn BKL, exempt]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 3eb076c..0273759 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1536,9 +1536,13 @@
{
mlog_entry("(0x%p)\n", sb);
+ lock_kernel();
+
ocfs2_sync_blockdev(sb);
ocfs2_dismount_volume(sb, 0);
+ unlock_kernel();
+
mlog_exit_void();
}