From: Christoph Hellwig <hch@lst.de>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Amir Goldstein <amir73il@gmail.com>,
linux-fsdevel@vger.kernel.org
Cc: Shaohua Li <shli@kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
David Howells <dhowells@redhat.com>,
Steven Whitehouse <swhiteho@redhat.com>,
Mimi Zohar <zohar@linux.vnet.ibm.com>,
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 <hughd@google.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH 21/22] tmpfs: generate random sb->s_uuid
Date: Sun, 28 May 2017 13:20:07 +0300 [thread overview]
Message-ID: <20170528102008.30276-22-hch@lst.de> (raw)
In-Reply-To: <20170528102008.30276-1-hch@lst.de>
From: Amir Goldstein <amir73il@gmail.com>
This is used by overlayfs to encode intrasystem unique file handles.
Suggested-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
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 <uapi/linux/memfd.h>
#include <linux/userfaultfd_k.h>
#include <linux/rmap.h>
+#include <linux/uuid.h>
#include <linux/uaccess.h>
#include <asm/pgtable.h>
@@ -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
next prev parent reply other threads:[~2017-05-28 10:21 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-28 10:19 cleanup UUID types V5 Christoph Hellwig
2017-05-28 10:19 ` [PATCH 01/22] Revert "afs: Move UUID struct to linux/uuid.h" Christoph Hellwig
2017-05-28 10:19 ` [PATCH 02/22] xfs: use uuid_copy() helper to abstract uuid_t Christoph Hellwig
2017-05-28 10:19 ` [PATCH 03/22] xfs: use uuid_be to implement the uuid_t type Christoph Hellwig
2017-05-28 10:19 ` [PATCH 04/22] md: namespace private helper names Christoph Hellwig
2017-05-28 10:19 ` [PATCH 05/22] uuid: remove uuid_be defintions from the uapi header Christoph Hellwig
2017-05-28 10:19 ` [PATCH 06/22] uuid: rename uuid types Christoph Hellwig
2017-05-28 10:19 ` [PATCH 07/22] uuid: don't export guid_index and uuid_index Christoph Hellwig
2017-05-28 10:19 ` [PATCH 08/22] uuid: hoist helpers uuid_equal() and uuid_copy() from xfs Christoph Hellwig
2017-05-28 10:19 ` [PATCH 09/22] uuid: hoist uuid_is_null() helper from libnvdimm Christoph Hellwig
2017-05-28 10:19 ` [PATCH 10/22] S390/sysinfo: use uuid_is_null instead of opencoding it Christoph Hellwig
2017-05-28 10:19 ` [PATCH 11/22] xfs: remove uuid_getnodeuniq and xfs_uu_t Christoph Hellwig
2017-05-28 10:19 ` [PATCH 12/22] xfs: use the common helper uuid_is_null() Christoph Hellwig
2017-05-28 10:19 ` [PATCH 13/22] block: remove blk_part_pack_uuid Christoph Hellwig
2017-05-28 10:20 ` [PATCH 14/22] ima/policy: switch to use uuid_t Christoph Hellwig
2017-05-28 10:20 ` [PATCH 15/22] fs: switch ->s_uuid to uuid_t Christoph Hellwig
2017-05-28 10:20 ` [PATCH 16/22] overlayfs: use uuid_t instead of uuid_be Christoph Hellwig
2017-05-28 10:20 ` [PATCH 17/22] partitions/ldm: switch to use uuid_t Christoph Hellwig
2017-05-28 10:20 ` [PATCH 18/22] sysctl: " Christoph Hellwig
2017-05-28 10:20 ` [PATCH 19/22] nvme: switch to uuid_t Christoph Hellwig
2017-05-28 10:20 ` [PATCH 20/22] scsi_debug: " Christoph Hellwig
2017-05-28 10:20 ` Christoph Hellwig [this message]
2017-05-28 10:20 ` [PATCH 22/22] MAINTAINERS: add uuid entry Christoph Hellwig
2017-05-30 10:00 ` [PATCH 01/22] Revert "afs: Move UUID struct to linux/uuid.h" David Howells
2017-05-31 9:41 ` Christoph Hellwig
2017-05-31 10:33 ` David Howells
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