X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=fs%2Fpipe.c;h=78fd0d0788dbc465c3d7a6ba674bb64a6ebea25d;hb=0e47c969c65e213421450c31043353ebe3c67e0c;hp=0e0752ef27159f6183dabc1749e49fca8494319a;hpb=c9cdd9a6ae49704f12a289706551536ec842693f;p=mirror_ubuntu-bionic-kernel.git

diff --git a/fs/pipe.c b/fs/pipe.c
index 0e0752ef2715..78fd0d0788db 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -663,10 +663,11 @@ out:
 		wake_up_interruptible_sync_poll(&pipe->wait, POLLIN | POLLRDNORM);
 		kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
 	}
-	if (ret > 0) {
+	if (ret > 0 && sb_start_write_trylock(file_inode(filp)->i_sb)) {
 		int err = file_update_time(filp);
 		if (err)
 			ret = err;
+		sb_end_write(file_inode(filp)->i_sb);
 	}
 	return ret;
 }