xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

btrfs: qgroup: Skeleton to support separate qgroup reservation type

Browse Source 
Instead of single qgroup->reserved, use a new structure btrfs_qgroup_rsv
to store different types of reservation.

This patch only updates the header needed to compile.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo
2017-12-12 15:34:23 +08:00
committed by David Sterba
parent 0a0d4415e3
commit d4e5c92055
2 changed files with 35 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
fs/btrfs/qgroup.h
View File

@@ -61,6 +61,26 @@ struct btrfs_qgroup_extent_record {
struct ulist *old_roots;
};
enum btrfs_qgroup_rsv_type {
BTRFS_QGROUP_RSV_DATA = 0,
BTRFS_QGROUP_RSV_META,
BTRFS_QGROUP_RSV_LAST,
};
/*
* Represents how many bytes we have reserved for this qgroup.
*
* Each type should have different reservation behavior.
* E.g, data follows its io_tree flag modification, while
* *currently* meta is just reserve-and-clear during transcation.
*
* TODO: Add new type for reservation which can survive transaction commit.
* Currect metadata reservation behavior is not suitable for such case.
*/
struct btrfs_qgroup_rsv {
u64 values[BTRFS_QGROUP_RSV_LAST];
};
/*
* one struct for each qgroup, organized in fs_info->qgroup_tree.
*/
@@ -88,6 +108,7 @@ struct btrfs_qgroup {
* reservation tracking
*/
u64 reserved;
struct btrfs_qgroup_rsv rsv;
/*
* lists
@@ -227,12 +248,14 @@ int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, u64 srcid, u64 objectid,
struct btrfs_qgroup_inherit *inherit);
void btrfs_qgroup_free_refroot(struct btrfs_fs_info *fs_info,
u64 ref_root, u64 num_bytes);
u64 ref_root, u64 num_bytes,
enum btrfs_qgroup_rsv_type type);
static inline void btrfs_qgroup_free_delayed_ref(struct btrfs_fs_info *fs_info,
u64 ref_root, u64 num_bytes)
{
trace_btrfs_qgroup_free_delayed_ref(fs_info, ref_root, num_bytes);
btrfs_qgroup_free_refroot(fs_info, ref_root, num_bytes);
btrfs_qgroup_free_refroot(fs_info, ref_root, num_bytes,
BTRFS_QGROUP_RSV_DATA);
}
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS