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| author |   Qu Wenruo <quwenruo@cn.fujitsu.com> | 2015-09-08 17:08:36 +0800 |
|---|---|---|
| committer |   Chris Mason <clm@fb.com> | 2015-10-21 18:37:46 -0700 |
| commit | f64d5ca868214f9beb60108c82fcb96940132bfb (patch) | |
| tree | 21676bd140d5b755f24663839f10e2c04c878e3e /fs | |
| parent | btrfs: qgroup: Introduce functions to release/free qgroup reserve data (diff) | |
| download | linux-dev-f64d5ca868214f9beb60108c82fcb96940132bfb.tar.xz linux-dev-f64d5ca868214f9beb60108c82fcb96940132bfb.zip | |
btrfs: delayed_ref: Add new function to record reserved space into delayed ref
Add new function btrfs_add_delayed_qgroup_reserve() function to record
how much space is reserved for that extent.
As btrfs only accounts qgroup at run_delayed_refs() time, so newly
allocated extent should keep the reserved space until then.
So add needed function with related members to do it.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/delayed-ref.c | 29 | ||||
| -rw-r--r-- | fs/btrfs/delayed-ref.h | 14 |
2 files changed, 43 insertions, 0 deletions
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c index ac3e81da6d4e..bd9b63b1ddb2 100644 --- a/fs/btrfs/delayed-ref.c +++ b/fs/btrfs/delayed-ref.c @@ -476,6 +476,8 @@ add_delayed_ref_head(struct btrfs_fs_info *fs_info, INIT_LIST_HEAD(&head_ref->ref_list); head_ref->processing = 0; head_ref->total_ref_mod = count_mod; + head_ref->qgroup_reserved = 0; + head_ref->qgroup_ref_root = 0; /* Record qgroup extent info if provided */ if (qrecord) { @@ -746,6 +748,33 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info, return 0; } +int btrfs_add_delayed_qgroup_reserve(struct btrfs_fs_info *fs_info, + struct btrfs_trans_handle *trans, + u64 ref_root, u64 bytenr, u64 num_bytes) +{ + struct btrfs_delayed_ref_root *delayed_refs; + struct btrfs_delayed_ref_head *ref_head; + int ret = 0; + + if (!fs_info->quota_enabled || !is_fstree(ref_root)) + return 0; + + delayed_refs = &trans->transaction->delayed_refs; + + spin_lock(&delayed_refs->lock); + ref_head = find_ref_head(&delayed_refs->href_root, bytenr, 0); + if (!ref_head) { + ret = -ENOENT; + goto out; + } + WARN_ON(ref_head->qgroup_reserved || ref_head->qgroup_ref_root); + ref_head->qgroup_ref_root = ref_root; + ref_head->qgroup_reserved = num_bytes; +out: + spin_unlock(&delayed_refs->lock); + return ret; +} + int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h index 13fb5e6090fe..d4c41e26101c 100644 --- a/fs/btrfs/delayed-ref.h +++ b/fs/btrfs/delayed-ref.h @@ -113,6 +113,17 @@ struct btrfs_delayed_ref_head { int total_ref_mod; /* + * For qgroup reserved space freeing. + * + * ref_root and reserved will be recorded after + * BTRFS_ADD_DELAYED_EXTENT is called. + * And will be used to free reserved qgroup space at + * run_delayed_refs() time. + */ + u64 qgroup_ref_root; + u64 qgroup_reserved; + + /* * when a new extent is allocated, it is just reserved in memory * The actual extent isn't inserted into the extent allocation tree * until the delayed ref is processed. must_insert_reserved is @@ -242,6 +253,9 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info, u64 owner, u64 offset, int action, struct btrfs_delayed_extent_op *extent_op, int no_quota); +int btrfs_add_delayed_qgroup_reserve(struct btrfs_fs_info *fs_info, + struct btrfs_trans_handle *trans, + u64 ref_root, u64 bytenr, u64 num_bytes); int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, |