diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-04-22 12:44:16 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-22 12:44:20 +0200 |
| commit | 3568b71d46bea87da1936902b6fbb2a3b1154b3d (patch) | |
| tree | 621ba4ccef15b87ce16f0fc2cc1e9b2a3f565ffc /fs/btrfs/super.c | |
| parent | 2a3313f494c2f3f74a27d66f0f14b38558b7dba2 (diff) | |
| parent | 091069740304c979f957ceacec39c461d0192158 (diff) | |
Merge commit 'v2.6.30-rc3' into x86/urgent
Merge reason: hpet.c changed upstream, make sure we test against that
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 9744af9d71e..a7acfe639a4 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -635,14 +635,9 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd, 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; - } + vol = memdup_user((void __user *)arg, sizeof(*vol)); + if (IS_ERR(vol)) + return PTR_ERR(vol); switch (cmd) { case BTRFS_IOC_SCAN_DEV: @@ -650,7 +645,7 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd, &btrfs_fs_type, &fs_devices); break; } -out: + kfree(vol); return ret; } |