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ovl: rename filesystem type to "overlay"

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Some distributions carry an "old" format of overlayfs while mainline has a
"new" format.

The distros will possibly want to keep the old overlayfs alongside the new
for compatibility reasons.

To make it possible to differentiate the two versions change the name of
the new one from "overlayfs" to "overlay".

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Reported-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Cc: Andy Whitcroft <apw@canonical.com>
This commit is contained in:
Miklos Szeredi 2014-11-20 16:39:59 +01:00
parent fc14f9c127
commit ef94b1864d
6 changed files with 9 additions and 9 deletions
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2
Documentation/filesystems/overlayfs.txt
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@ -64,7 +64,7 @@ is formed.
At mount time, the two directories given as mount options "lowerdir" and
"upperdir" are combined into a merged directory:
mount -t overlayfs overlayfs -olowerdir=/lower,upperdir=/upper,\
mount -t overlay overlay -olowerdir=/lower,upperdir=/upper,\
workdir=/work /merged
The "workdir" needs to be an empty directory on the same filesystem

2
MAINTAINERS
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@ -6888,7 +6888,7 @@ F: drivers/scsi/osd/
F: include/scsi/osd_*
F: fs/exofs/
OVERLAYFS FILESYSTEM
OVERLAY FILESYSTEM
M: Miklos Szeredi <miklos@szeredi.hu>
L: linux-fsdevel@vger.kernel.org
S: Supported

2
fs/Makefile
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@ -104,7 +104,7 @@ obj-$(CONFIG_QNX6FS_FS) += qnx6/
obj-$(CONFIG_AUTOFS4_FS) += autofs4/
obj-$(CONFIG_ADFS_FS) += adfs/
obj-$(CONFIG_FUSE_FS) += fuse/
obj-$(CONFIG_OVERLAYFS_FS) += overlayfs/
obj-$(CONFIG_OVERLAY_FS) += overlayfs/
obj-$(CONFIG_UDF_FS) += udf/
obj-$(CONFIG_SUN_OPENPROMFS) += openpromfs/
obj-$(CONFIG_OMFS_FS) += omfs/

2
fs/overlayfs/Kconfig
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@ -1,4 +1,4 @@
config OVERLAYFS_FS
config OVERLAY_FS
tristate "Overlay filesystem support"
help
An overlay filesystem combines two filesystems - an 'upper' filesystem

4
fs/overlayfs/Makefile
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@ -2,6 +2,6 @@
# Makefile for the overlay filesystem.
#
obj-$(CONFIG_OVERLAYFS_FS) += overlayfs.o
obj-$(CONFIG_OVERLAY_FS) += overlay.o
overlayfs-objs := super.o inode.o dir.o readdir.o copy_up.o
overlay-objs := super.o inode.o dir.o readdir.o copy_up.o

6
fs/overlayfs/super.c
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@ -24,7 +24,7 @@ MODULE_AUTHOR("Miklos Szeredi <miklos@szeredi.hu>");
MODULE_DESCRIPTION("Overlay filesystem");
MODULE_LICENSE("GPL");
#define OVERLAYFS_SUPER_MAGIC 0x794c764f
#define OVERLAYFS_SUPER_MAGIC 0x794c7630
struct ovl_config {
char *lowerdir;
@ -776,11 +776,11 @@ static struct dentry *ovl_mount(struct file_system_type *fs_type, int flags,
static struct file_system_type ovl_fs_type = {
.owner = THIS_MODULE,
.name = "overlayfs",
.name = "overlay",
.mount = ovl_mount,
.kill_sb = kill_anon_super,
};
MODULE_ALIAS_FS("overlayfs");
MODULE_ALIAS_FS("overlay");
static int __init ovl_init(void)
{