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Message-Id: <20191126005851.11813-2-marcos.souza.org@gmail.com>
Date: Mon, 25 Nov 2019 21:58:50 -0300
From: Marcos Paulo de Souza <marcos.souza.org@...il.com>
To: linux-kernel@...r.kernel.org
Cc: dsterba@...e.com, linux-btrfs@...r.kernel.org,
anand.jain@...cle.com, Marcos Paulo de Souza <mpdesouza@...e.com>,
Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>
Subject: [PATCH 1/2] btrfs: qgroup: Cleanup quota_root checks
From: Marcos Paulo de Souza <mpdesouza@...e.com>
Remove some variables that are set only to be checked later, and never
used.
Signed-off-by: Marcos Paulo de Souza <mpdesouza@...e.com>
---
fs/btrfs/qgroup.c | 34 ++++++++++------------------------
1 file changed, 10 insertions(+), 24 deletions(-)
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index d4282e12f2a6..417fafb4b4f6 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1243,7 +1243,6 @@ int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, u64 src,
u64 dst)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
- struct btrfs_root *quota_root;
struct btrfs_qgroup *parent;
struct btrfs_qgroup *member;
struct btrfs_qgroup_list *list;
@@ -1259,8 +1258,7 @@ int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, u64 src,
return -ENOMEM;
mutex_lock(&fs_info->qgroup_ioctl_lock);
- quota_root = fs_info->quota_root;
- if (!quota_root) {
+ if (!fs_info->quota_root) {
ret = -EINVAL;
goto out;
}
@@ -1307,7 +1305,6 @@ static int __del_qgroup_relation(struct btrfs_trans_handle *trans, u64 src,
u64 dst)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
- struct btrfs_root *quota_root;
struct btrfs_qgroup *parent;
struct btrfs_qgroup *member;
struct btrfs_qgroup_list *list;
@@ -1320,8 +1317,7 @@ static int __del_qgroup_relation(struct btrfs_trans_handle *trans, u64 src,
if (!tmp)
return -ENOMEM;
- quota_root = fs_info->quota_root;
- if (!quota_root) {
+ if (!fs_info->quota_root) {
ret = -EINVAL;
goto out;
}
@@ -1387,11 +1383,11 @@ int btrfs_create_qgroup(struct btrfs_trans_handle *trans, u64 qgroupid)
int ret = 0;
mutex_lock(&fs_info->qgroup_ioctl_lock);
- quota_root = fs_info->quota_root;
- if (!quota_root) {
+ if (!fs_info->quota_root) {
ret = -EINVAL;
goto out;
}
+ quota_root = fs_info->quota_root;
qgroup = find_qgroup_rb(fs_info, qgroupid);
if (qgroup) {
ret = -EEXIST;
@@ -1416,14 +1412,12 @@ int btrfs_create_qgroup(struct btrfs_trans_handle *trans, u64 qgroupid)
int btrfs_remove_qgroup(struct btrfs_trans_handle *trans, u64 qgroupid)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
- struct btrfs_root *quota_root;
struct btrfs_qgroup *qgroup;
struct btrfs_qgroup_list *list;
int ret = 0;
mutex_lock(&fs_info->qgroup_ioctl_lock);
- quota_root = fs_info->quota_root;
- if (!quota_root) {
+ if (!fs_info->quota_root) {
ret = -EINVAL;
goto out;
}
@@ -1465,7 +1459,6 @@ int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, u64 qgroupid,
struct btrfs_qgroup_limit *limit)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
- struct btrfs_root *quota_root;
struct btrfs_qgroup *qgroup;
int ret = 0;
/* Sometimes we would want to clear the limit on this qgroup.
@@ -1475,8 +1468,7 @@ int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, u64 qgroupid,
const u64 CLEAR_VALUE = -1;
mutex_lock(&fs_info->qgroup_ioctl_lock);
- quota_root = fs_info->quota_root;
- if (!quota_root) {
+ if (!fs_info->quota_root) {
ret = -EINVAL;
goto out;
}
@@ -2578,10 +2570,9 @@ int btrfs_qgroup_account_extents(struct btrfs_trans_handle *trans)
int btrfs_run_qgroups(struct btrfs_trans_handle *trans)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
- struct btrfs_root *quota_root = fs_info->quota_root;
int ret = 0;
- if (!quota_root)
+ if (!fs_info->quota_root)
return ret;
spin_lock(&fs_info->qgroup_lock);
@@ -2875,7 +2866,6 @@ static bool qgroup_check_limits(struct btrfs_fs_info *fs_info,
static int qgroup_reserve(struct btrfs_root *root, u64 num_bytes, bool enforce,
enum btrfs_qgroup_rsv_type type)
{
- struct btrfs_root *quota_root;
struct btrfs_qgroup *qgroup;
struct btrfs_fs_info *fs_info = root->fs_info;
u64 ref_root = root->root_key.objectid;
@@ -2894,8 +2884,7 @@ static int qgroup_reserve(struct btrfs_root *root, u64 num_bytes, bool enforce,
enforce = false;
spin_lock(&fs_info->qgroup_lock);
- quota_root = fs_info->quota_root;
- if (!quota_root)
+ if (!fs_info->quota_root)
goto out;
qgroup = find_qgroup_rb(fs_info, ref_root);
@@ -2962,7 +2951,6 @@ void btrfs_qgroup_free_refroot(struct btrfs_fs_info *fs_info,
u64 ref_root, u64 num_bytes,
enum btrfs_qgroup_rsv_type type)
{
- struct btrfs_root *quota_root;
struct btrfs_qgroup *qgroup;
struct ulist_node *unode;
struct ulist_iterator uiter;
@@ -2980,8 +2968,7 @@ void btrfs_qgroup_free_refroot(struct btrfs_fs_info *fs_info,
}
spin_lock(&fs_info->qgroup_lock);
- quota_root = fs_info->quota_root;
- if (!quota_root)
+ if (!fs_info->quota_root)
goto out;
qgroup = find_qgroup_rb(fs_info, ref_root);
@@ -3681,7 +3668,6 @@ void __btrfs_qgroup_free_meta(struct btrfs_root *root, int num_bytes,
static void qgroup_convert_meta(struct btrfs_fs_info *fs_info, u64 ref_root,
int num_bytes)
{
- struct btrfs_root *quota_root = fs_info->quota_root;
struct btrfs_qgroup *qgroup;
struct ulist_node *unode;
struct ulist_iterator uiter;
@@ -3689,7 +3675,7 @@ static void qgroup_convert_meta(struct btrfs_fs_info *fs_info, u64 ref_root,
if (num_bytes == 0)
return;
- if (!quota_root)
+ if (!fs_info->quota_root)
return;
spin_lock(&fs_info->qgroup_lock);
--
2.23.0
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