GFS2: Add get_xstate quota function

This allows querying of the quota state via the XFS quota
API.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 6aaa6c5e21bc70744031849916ebf4e3b2ba7f0c..e7114be7b44901246e062db8f57887fa0f54eedd 100644 (file)
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -47,6 +47,7 @@
 #include <linux/gfs2_ondisk.h>
 #include <linux/kthread.h>
 #include <linux/freezer.h>
+#include <linux/dqblk_xfs.h>
 
 #include "gfs2.h"
 #include "incore.h"
@@ -1375,7 +1376,29 @@ int gfs2_quotad(void *data)
        return 0;
 }
 
+static int gfs2_quota_get_xstate(struct super_block *sb,
+                                struct fs_quota_stat *fqs)
+{
+       struct gfs2_sbd *sdp = sb->s_fs_info;
+
+       memset(fqs, 0, sizeof(struct fs_quota_stat));
+       fqs->qs_version = FS_QSTAT_VERSION;
+       if (sdp->sd_args.ar_quota == GFS2_QUOTA_ON)
+               fqs->qs_flags = (XFS_QUOTA_UDQ_ENFD | XFS_QUOTA_GDQ_ENFD);
+       else if (sdp->sd_args.ar_quota == GFS2_QUOTA_ACCOUNT)
+               fqs->qs_flags = (XFS_QUOTA_UDQ_ACCT | XFS_QUOTA_GDQ_ACCT);
+       if (sdp->sd_quota_inode) {
+               fqs->qs_uquota.qfs_ino = GFS2_I(sdp->sd_quota_inode)->i_no_addr;
+               fqs->qs_uquota.qfs_nblks = sdp->sd_quota_inode->i_blocks;
+       }
+       fqs->qs_uquota.qfs_nextents = 1; /* unsupported */
+       fqs->qs_gquota = fqs->qs_uquota; /* its the same inode in both cases */
+       fqs->qs_incoredqs = atomic_read(&qd_lru_count);
+       return 0;
+}
+
 const struct quotactl_ops gfs2_quotactl_ops = {
        .quota_sync     = gfs2_quota_sync,
+       .get_xstate     = gfs2_quota_get_xstate,
 };