diff options
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/Kconfig | 18 | ||||
| -rw-r--r-- | fs/btrfs/super.c | 12 |
2 files changed, 25 insertions, 5 deletions
diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig new file mode 100644 index 000000000000..f8fcf999ea1b --- /dev/null +++ b/fs/btrfs/Kconfig @@ -0,0 +1,18 @@ +config BTRFS_FS + tristate "Btrfs filesystem (EXPERIMENTAL) Unstable disk format" + depends on EXPERIMENTAL + select LIBCRC32C + select ZLIB_INFLATE + select ZLIB_DEFLATE + help + Btrfs is a new filesystem with extents, writable snapshotting, + support for multiple devices and many more features. + + Btrfs is highly experimental, and THE DISK FORMAT IS NOT YET + FINALIZED. You should say N here unless you are interested in + testing Btrfs with non-critical data. + + To compile this file system support as a module, choose M here. The + module will be called btrfs. + + If unsure, say N. diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 4c0b7569ba52..f3fd7e2cbc38 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -37,6 +37,7 @@ #include <linux/ctype.h> #include <linux/namei.h> #include <linux/miscdevice.h> +#include <linux/magic.h> #include "compat.h" #include "ctree.h" #include "disk-io.h" @@ -50,7 +51,6 @@ #include "export.h" #include "compression.h" -#define BTRFS_SUPER_MAGIC 0x9123683E static struct super_operations btrfs_super_ops; @@ -606,18 +606,20 @@ out: return ret; } -static void btrfs_write_super_lockfs(struct super_block *sb) +static int btrfs_freeze(struct super_block *sb) { struct btrfs_root *root = btrfs_sb(sb); mutex_lock(&root->fs_info->transaction_kthread_mutex); mutex_lock(&root->fs_info->cleaner_mutex); + return 0; } -static void btrfs_unlockfs(struct super_block *sb) +static int btrfs_unfreeze(struct super_block *sb) { struct btrfs_root *root = btrfs_sb(sb); mutex_unlock(&root->fs_info->cleaner_mutex); mutex_unlock(&root->fs_info->transaction_kthread_mutex); + return 0; } static struct super_operations btrfs_super_ops = { @@ -632,8 +634,8 @@ static struct super_operations btrfs_super_ops = { .destroy_inode = btrfs_destroy_inode, .statfs = btrfs_statfs, .remount_fs = btrfs_remount, - .write_super_lockfs = btrfs_write_super_lockfs, - .unlockfs = btrfs_unlockfs, + .freeze_fs = btrfs_freeze, + .unfreeze_fs = btrfs_unfreeze, }; static const struct file_operations btrfs_ctl_fops = { |