[PATCH] fuse: locking fix for nlookup

[firefly-linux-kernel-4.4.55.git] / fs / fuse / dir.c

diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index a8f65c11aa2c499d9455e3b84a5566e64099fd5e..7ecfe95795cda9a37b410188b715f948fc8140aa 100644 (file)
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -163,7 +163,9 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
                                fuse_send_forget(fc, req, outarg.nodeid, 1);
                                return 0;
                        }
+                       spin_lock(&fc->lock);
                        fi->nlookup ++;
+                       spin_unlock(&fc->lock);
                }
                fuse_put_request(fc, req);
                if (err || (outarg.attr.mode ^ inode->i_mode) & S_IFMT)