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Btrfs: Add locking around volume management (device add/remove/balance)

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-07-08 14:19:17 -04:00
parent a7a16fd772
commit 7d9eb12c87
6 changed files with 104 additions and 41 deletions
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6
fs/btrfs/ioctl.c
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@@ -307,8 +307,7 @@ static int btrfs_ioctl_resize(struct btrfs_root *root, void __user *arg)
goto out;
}
mutex_lock(&root->fs_info->alloc_mutex);
mutex_lock(&root->fs_info->chunk_mutex);
mutex_lock(&root->fs_info->volume_mutex);
sizestr = vol_args->name;
devstr = strchr(sizestr, ':');
if (devstr) {
@@ -378,8 +377,7 @@ static int btrfs_ioctl_resize(struct btrfs_root *root, void __user *arg)
}
out_unlock:
mutex_lock(&root->fs_info->alloc_mutex);
mutex_lock(&root->fs_info->chunk_mutex);
mutex_unlock(&root->fs_info->volume_mutex);
out:
kfree(vol_args);
return ret;