From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([65.50.211.133]:34412 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751605AbdE1KVm (ORCPT ); Sun, 28 May 2017 06:21:42 -0400 From: Christoph Hellwig To: Andy Shevchenko , Amir Goldstein , linux-fsdevel@vger.kernel.org Cc: Shaohua Li , Dan Williams , David Howells , Steven Whitehouse , Mimi Zohar , linux-xfs@vger.kernel.org, linux-raid@vger.kernel.org, linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, Hugh Dickins , Andrew Morton Subject: [PATCH 21/22] tmpfs: generate random sb->s_uuid Date: Sun, 28 May 2017 13:20:07 +0300 Message-Id: <20170528102008.30276-22-hch@lst.de> In-Reply-To: <20170528102008.30276-1-hch@lst.de> References: <20170528102008.30276-1-hch@lst.de> Sender: linux-block-owner@vger.kernel.org List-Id: linux-block@vger.kernel.org From: Amir Goldstein This is used by overlayfs to encode intrasystem unique file handles. Suggested-by: Miklos Szeredi Cc: Hugh Dickins Cc: Andrew Morton Signed-off-by: Amir Goldstein Signed-off-by: Christoph Hellwig --- mm/shmem.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/shmem.c b/mm/shmem.c index e67d6ba4e98e..391f2dcca727 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -75,6 +75,7 @@ static struct vfsmount *shm_mnt; #include #include #include +#include #include #include @@ -3761,6 +3762,7 @@ int shmem_fill_super(struct super_block *sb, void *data, int silent) #ifdef CONFIG_TMPFS_POSIX_ACL sb->s_flags |= MS_POSIXACL; #endif + uuid_gen(&sb->s_uuid); inode = shmem_get_inode(sb, NULL, S_IFDIR | sbinfo->mode, 0, VM_NORESERVE); if (!inode) -- 2.11.0