restore killability of old mutex_lock_killable(&inode->i_mutex) users

The ones that are taking it exclusive, that is...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 3 deletions

diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c
index da186ee4f846..9e79f6458dfb 100644
--- a/fs/overlayfs/readdir.c
+++ b/fs/overlayfs/readdir.c
@@ -218,9 +218,7 @@ static int ovl_check_whiteouts(struct dentry *dir, struct ovl_readdir_data *rdd)
         cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE);
         old_cred = override_creds(override_cred);
 
-        inode_lock(dir->d_inode);
-        err = 0;
-        // XXX: err = mutex_lock_killable(&dir->d_inode->i_mutex);
+        err = down_write_killable(&dir->d_inode->i_rwsem);
         if (!err) {
                 while (rdd->first_maybe_whiteout) {
                         p = rdd->first_maybe_whiteout;