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| author | Johann Lombardi <johann@whamcloud.com> | 2011-05-24 18:31:25 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-05-24 18:31:25 -0400 |
| commit | c5e06d101aaf72f1f2192a661414459775e9bd74 (patch) | |
| tree | 96d05d41be2bfea6d51be915ce196f033a5d9bf3 /fs/ext4/Makefile | |
| parent | d02a9391f79cab65cde74cd9e8ccd2290a565229 (diff) | |
| download | linux-c5e06d101aaf72f1f2192a661414459775e9bd74.tar.gz linux-c5e06d101aaf72f1f2192a661414459775e9bd74.tar.bz2 linux-c5e06d101aaf72f1f2192a661414459775e9bd74.zip | |
ext4: add support for multiple mount protection
Prevent an ext4 filesystem from being mounted multiple times.
A sequence number is stored on disk and is periodically updated (every 5
seconds by default) by a mounted filesystem.
At mount time, we now wait for s_mmp_update_interval seconds to make sure
that the MMP sequence does not change.
In case of failure, the nodename, bdevname and the time at which the MMP
block was last updated is displayed.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Johann Lombardi <johann@whamcloud.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/Makefile')
| -rw-r--r-- | fs/ext4/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/Makefile b/fs/ext4/Makefile index c947e36eda6c..04109460ba9e 100644 --- a/fs/ext4/Makefile +++ b/fs/ext4/Makefile @@ -6,7 +6,8 @@ obj-$(CONFIG_EXT4_FS) += ext4.o ext4-y := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o page-io.o \ ioctl.o namei.o super.o symlink.o hash.o resize.o extents.o \ - ext4_jbd2.o migrate.o mballoc.o block_validity.o move_extent.o + ext4_jbd2.o migrate.o mballoc.o block_validity.o move_extent.o \ + mmp.o ext4-$(CONFIG_EXT4_FS_XATTR) += xattr.o xattr_user.o xattr_trusted.o ext4-$(CONFIG_EXT4_FS_POSIX_ACL) += acl.o |