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Btrfs: don't pass a trans handle unnecessarily in volumes.c 

Some functions never use the transaction handle passed to them.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
hifive-unleashed-5.1
Li Zefan 2011-12-08 15:07:24 +08:00
parent 4da6f1a332
commit 125ccb0ae6
3 changed files with 9 additions and 14 deletions
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2
fs/btrfs/extent-tree.c
View File

@ -7084,7 +7084,7 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
* space to fit our block group in.
*/
if (device->total_bytes > device->bytes_used + min_free) {
ret = find_free_dev_extent(NULL, device, min_free,
ret = find_free_dev_extent(device, min_free,
&dev_offset, NULL);
if (!ret)
dev_nr++;

18
fs/btrfs/volumes.c
View File

@ -829,7 +829,6 @@ out:
/*
* find_free_dev_extent - find free space in the specified device
* @trans: transaction handler
* @device: the device which we search the free space in
* @num_bytes: the size of the free space that we need
* @start: store the start of the free space.
@ -848,8 +847,7 @@ out:
* But if we don't find suitable free space, it is used to store the size of
* the max free space.
*/
int find_free_dev_extent(struct btrfs_trans_handle *trans,
struct btrfs_device *device, u64 num_bytes,
int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes,
u64 *start, u64 *len)
{
struct btrfs_key key;
@ -893,7 +891,7 @@ int find_free_dev_extent(struct btrfs_trans_handle *trans,
key.offset = search_start;
key.type = BTRFS_DEV_EXTENT_KEY;
ret = btrfs_search_slot(trans, root, &key, path, 0, 0);
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
if (ret < 0)
goto out;
if (ret > 0) {
@ -1469,8 +1467,7 @@ error_undo:
/*
* does all the dirty work required for changing file system's UUID.
*/
static int btrfs_prepare_sprout(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
static int btrfs_prepare_sprout(struct btrfs_root *root)
{
struct btrfs_fs_devices *fs_devices = root->fs_info->fs_devices;
struct btrfs_fs_devices *old_devices;
@ -1695,7 +1692,7 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
if (seeding_dev) {
sb->s_flags &= ~MS_RDONLY;
ret = btrfs_prepare_sprout(trans, root);
ret = btrfs_prepare_sprout(root);
BUG_ON(ret);
}
@ -2323,8 +2320,7 @@ done:
return ret;
}
static int btrfs_add_system_chunk(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
static int btrfs_add_system_chunk(struct btrfs_root *root,
struct btrfs_key *key,
struct btrfs_chunk *chunk, int item_size)
{
@ -2496,7 +2492,7 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
if (total_avail == 0)
continue;
ret = find_free_dev_extent(trans, device,
ret = find_free_dev_extent(device,
max_stripe_size * dev_stripes,
&dev_offset, &max_avail);
if (ret && ret != -ENOSPC)
@ -2687,7 +2683,7 @@ static int __finish_chunk_alloc(struct btrfs_trans_handle *trans,
BUG_ON(ret);
if (map->type & BTRFS_BLOCK_GROUP_SYSTEM) {
ret = btrfs_add_system_chunk(trans, chunk_root, &key, chunk,
ret = btrfs_add_system_chunk(chunk_root, &key, chunk,
item_size);
BUG_ON(ret);
}

3
fs/btrfs/volumes.h
View File

@ -230,7 +230,6 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size);
int btrfs_init_new_device(struct btrfs_root *root, char *path);
int btrfs_balance(struct btrfs_root *dev_root);
int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset);
int find_free_dev_extent(struct btrfs_trans_handle *trans,
struct btrfs_device *device, u64 num_bytes,
int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes,
u64 *start, u64 *max_avail);
#endif