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path: root/fs/btrfs/super.c
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Diffstat (limited to 'fs/btrfs/super.c')
-rw-r--r--fs/btrfs/super.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 0a14b495532f..19a4daf03ccb 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -37,7 +37,7 @@
#include <linux/ctype.h>
#include <linux/namei.h>
#include <linux/miscdevice.h>
-#include <linux/version.h>
+#include <linux/magic.h>
#include "compat.h"
#include "ctree.h"
#include "disk-io.h"
@@ -51,7 +51,6 @@
#include "export.h"
#include "compression.h"
-#define BTRFS_SUPER_MAGIC 0x9123683E
static struct super_operations btrfs_super_ops;
@@ -380,7 +379,6 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
btrfs_start_delalloc_inodes(root);
btrfs_wait_ordered_extents(root, 0);
- btrfs_clean_old_snapshots(root);
trans = btrfs_start_transaction(root, 1);
ret = btrfs_commit_transaction(trans, root);
sb->s_dirt = 0;
@@ -512,6 +510,10 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
struct btrfs_root *root = btrfs_sb(sb);
int ret;
+ ret = btrfs_parse_options(root, data);
+ if (ret)
+ return -EINVAL;
+
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
return 0;
@@ -582,18 +584,20 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
{
struct btrfs_ioctl_vol_args *vol;
struct btrfs_fs_devices *fs_devices;
- int ret = 0;
- int len;
+ int ret = -ENOTTY;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
vol = kmalloc(sizeof(*vol), GFP_KERNEL);
+ if (!vol)
+ return -ENOMEM;
+
if (copy_from_user(vol, (void __user *)arg, sizeof(*vol))) {
ret = -EFAULT;
goto out;
}
- len = strnlen(vol->name, BTRFS_PATH_NAME_MAX);
+
switch (cmd) {
case BTRFS_IOC_SCAN_DEV:
ret = btrfs_scan_one_device(vol->name, FMODE_READ,