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authorQu Wenruo <quwenruo@cn.fujitsu.com>2015-09-28 16:57:53 +0800
committerChris Mason <clm@fb.com>2015-10-21 18:41:08 -0700
commit81fb6f77a02678ddb0755c24f83c4ed5207da046 (patch)
tree751927a8dcfbdff1aee42368b0b5fc7941446d10 /fs
parentb9d0b38928e21560550bd3c1a278d6e004d3bde6 (diff)
downloadop-kernel-dev-81fb6f77a02678ddb0755c24f83c4ed5207da046.zip
op-kernel-dev-81fb6f77a02678ddb0755c24f83c4ed5207da046.tar.gz
btrfs: qgroup: Add new trace point for qgroup data reserve
Now each qgroup reserve for data will has its ftrace event for better debugging. 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/qgroup.c11
-rw-r--r--fs/btrfs/qgroup.h8
2 files changed, 17 insertions, 2 deletions
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 7d5339d..879343c 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -2516,10 +2516,12 @@ int btrfs_qgroup_reserve_data(struct inode *inode, u64 start, u64 len)
changeset.bytes_changed = 0;
changeset.range_changed = ulist_alloc(GFP_NOFS);
-
ret = set_record_extent_bits(&BTRFS_I(inode)->io_tree, start,
start + len -1, EXTENT_QGROUP_RESERVED, GFP_NOFS,
&changeset);
+ trace_btrfs_qgroup_reserve_data(inode, start, len,
+ changeset.bytes_changed,
+ QGROUP_RESERVE);
if (ret < 0)
goto cleanup;
ret = qgroup_reserve(root, changeset.bytes_changed);
@@ -2544,6 +2546,7 @@ static int __btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len,
int free)
{
struct extent_changeset changeset;
+ int trace_op = QGROUP_RELEASE;
int ret;
changeset.bytes_changed = 0;
@@ -2557,8 +2560,12 @@ static int __btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len,
if (ret < 0)
goto out;
- if (free)
+ if (free) {
qgroup_free(BTRFS_I(inode)->root, changeset.bytes_changed);
+ trace_op = QGROUP_FREE;
+ }
+ trace_btrfs_qgroup_release_data(inode, start, len,
+ changeset.bytes_changed, trace_op);
out:
ulist_free(changeset.range_changed);
return ret;
diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h
index adb03da..686b60f 100644
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -33,6 +33,13 @@ struct btrfs_qgroup_extent_record {
struct ulist *old_roots;
};
+/*
+ * For qgroup event trace points only
+ */
+#define QGROUP_RESERVE (1<<0)
+#define QGROUP_RELEASE (1<<1)
+#define QGROUP_FREE (1<<2)
+
int btrfs_quota_enable(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int btrfs_quota_disable(struct btrfs_trans_handle *trans,
@@ -81,6 +88,7 @@ static inline void btrfs_qgroup_free_delayed_ref(struct btrfs_fs_info *fs_info,
u64 ref_root, u64 num_bytes)
{
btrfs_qgroup_free_refroot(fs_info, ref_root, num_bytes);
+ trace_btrfs_qgroup_free_delayed_ref(ref_root, num_bytes);
}
void assert_qgroups_uptodate(struct btrfs_trans_handle *trans);
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