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OpenCloudOS-Kernel
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Btrfs: kill btrfs_truncate_reserve_metadata 

Since we've optimized the truncate path, we no longer require this function.

Signed-off-by: Josef Bacik <josef@redhat.com>
This commit is contained in:
Josef Bacik 2011-08-08 14:03:37 -04:00
parent 907cbcebd4
commit 5e962c7850
2 changed files with 0 additions and 34 deletions
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3
fs/btrfs/ctree.h
View File

@ -2240,9 +2240,6 @@ int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
void btrfs_block_rsv_release(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 num_bytes);
int btrfs_truncate_reserve_metadata(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_block_rsv *rsv);
int btrfs_set_block_group_ro(struct btrfs_root *root,
struct btrfs_block_group_cache *cache);
int btrfs_set_block_group_rw(struct btrfs_root *root,

31
fs/btrfs/extent-tree.c
View File

@ -3858,37 +3858,6 @@ static void release_global_block_rsv(struct btrfs_fs_info *fs_info)
WARN_ON(fs_info->chunk_block_rsv.reserved > 0);
}
int btrfs_truncate_reserve_metadata(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_block_rsv *rsv)
{
struct btrfs_block_rsv *trans_rsv = &root->fs_info->trans_block_rsv;
u64 num_bytes;
int ret;
/*
* Truncate should be freeing data, but give us 2 items just in case it
* needs to use some space. We may want to be smarter about this in the
* future.
*/
num_bytes = btrfs_calc_trans_metadata_size(root, 2);
/* We already have enough bytes, just return */
if (rsv->reserved >= num_bytes)
return 0;
num_bytes -= rsv->reserved;
/*
* You should have reserved enough space before hand to do this, so this
* should not fail.
*/
ret = block_rsv_migrate_bytes(trans_rsv, rsv, num_bytes);
BUG_ON(ret);
return 0;
}
void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{