From: Dongsheng Yang <yangds.fnst@cn.fujitsu.com>
To: <linux-btrfs@vger.kernel.org>
Cc: Fan Chengniang <fancn.fnst@cn.fujitsu.com>
Subject: [PATCH 9/9] btrfs: qgroup: obtain quota status
Date: Tue, 10 Feb 2015 18:23:23 +0800 [thread overview]
Message-ID: <1423563803-8996-12-git-send-email-yangds.fnst@cn.fujitsu.com> (raw)
In-Reply-To: <1423563803-8996-1-git-send-email-yangds.fnst@cn.fujitsu.com>
From: Fan Chengniang <fancn.fnst@cn.fujitsu.com>
add a function to obtain quota status. Now it can only get
whether quota is enabled. We can extend the function to get
more quota status
Signed-off-by: Fan Chengniang <fancn.fnst@cn.fujitsu.com>
---
fs/btrfs/ioctl.c | 6 ++++++
fs/btrfs/qgroup.c | 14 ++++++++++++++
fs/btrfs/qgroup.h | 3 +++
include/uapi/linux/btrfs.h | 3 +++
4 files changed, 26 insertions(+)
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 658d83d..f6e730b 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -4572,6 +4572,12 @@ static long btrfs_ioctl_quota_ctl(struct file *file, void __user *arg)
case BTRFS_QUOTA_CTL_DISABLE:
ret = btrfs_quota_disable(trans, root->fs_info);
break;
+ case BTRFS_QUOTA_CTL_STATUS:
+ ret = btrfs_quota_status(trans, root->fs_info, sa);
+ if (!ret)
+ if (copy_to_user(arg, sa, sizeof(*sa)))
+ ret = -EFAULT;
+ break;
default:
ret = -EINVAL;
break;
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 24c5bb1..b57fe45 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -993,6 +993,20 @@ out:
return ret;
}
+int btrfs_quota_status(struct btrfs_trans_handle *trans,
+ struct btrfs_fs_info *fs_info,
+ struct btrfs_ioctl_quota_ctl_args *sa)
+{
+ int ret = 0;
+
+ if (fs_info->quota_enabled)
+ sa->status |= BTRFS_QUOTA_STATUS_QUOTA_ENABLED;
+ else
+ sa->status &= ~BTRFS_QUOTA_STATUS_QUOTA_ENABLED;
+
+ return ret;
+}
+
static void qgroup_dirty(struct btrfs_fs_info *fs_info,
struct btrfs_qgroup *qgroup)
{
diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h
index c5242aa..52d8b19 100644
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -62,6 +62,9 @@ int btrfs_quota_enable(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int btrfs_quota_disable(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
+int btrfs_quota_status(struct btrfs_trans_handle *trans,
+ struct btrfs_fs_info *fs_info,
+ struct btrfs_ioctl_quota_ctl_args *sa);
int btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info);
void btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info);
int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info);
diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h
index 611e1c5..d4014e6 100644
--- a/include/uapi/linux/btrfs.h
+++ b/include/uapi/linux/btrfs.h
@@ -423,6 +423,9 @@ struct btrfs_ioctl_get_dev_stats {
#define BTRFS_QUOTA_CTL_ENABLE 1
#define BTRFS_QUOTA_CTL_DISABLE 2
#define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3
+#define BTRFS_QUOTA_CTL_STATUS 4
+
+#define BTRFS_QUOTA_STATUS_QUOTA_ENABLED 1
struct btrfs_ioctl_quota_ctl_args {
__u64 cmd;
__u64 status;
--
1.8.4.2
prev parent reply other threads:[~2015-02-10 10:26 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-10 10:23 [PATCH 0/9] Btrfs: qgroup: part-1: bug fixes for qgroup inherit Dongsheng Yang
2015-02-10 10:23 ` [PATCH 1/2] btrfs-progs:correct the return value Dongsheng Yang
2015-02-27 15:37 ` David Sterba
2015-02-10 10:23 ` [PATCH 1/9] btrfs: qgroup: move WARN_ON() to the correct location Dongsheng Yang
2015-03-02 22:05 ` Josef Bacik
2015-02-10 10:23 ` [PATCH 2/2] btrfs-progs:set max_rfer and max_excl on creating new subvolume Dongsheng Yang
2015-02-10 10:23 ` [PATCH 2/9] btrfs: qgroup: inherit limit info from srcgroup in creating snapshot Dongsheng Yang
2015-03-02 22:10 ` Josef Bacik
2015-02-10 10:23 ` [PATCH 3/9] btrfs: qgroup: update qgroup in memory at the same time when we update it in btree Dongsheng Yang
2015-02-10 10:23 ` [PATCH 4/9] btrfs: qgroup: consolidate the parameter of fucntion update_qgroup_limit_item() Dongsheng Yang
2015-02-10 10:23 ` [PATCH 5/9] btrfs: qgroup: update limit info in function btrfs_run_qgroups() Dongsheng Yang
2015-02-10 10:23 ` [PATCH 6/9] btrfs: qgroup: fix limit args override whole limit struct Dongsheng Yang
2015-02-10 10:23 ` [PATCH 7/9] Btrfs: qgroup: make the btree for qgroup increase from left to right Dongsheng Yang
2015-02-10 10:23 ` [PATCH 8/9] Btrfs: qgroup: cleanup, remove an unsued parameter in btrfs_create_qgroup() Dongsheng Yang
2015-02-10 10:23 ` Dongsheng Yang [this message]
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