GFS2: Allow gfs2 to update quota usage values through the quotactl interface

With this patch the gfs2_set_dqblk() function will be able to update the
quota usage block count (FS_DQ_BCOUNT) in addition to the already supported
FS_DQ_BHARD (limit) and FS_DQ_BSOFT (warn) fields of the dquot structure.

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

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index f606baf9ba7247e9a5fd9ccfb2cc9426019e589e..a689901963dea43c82b6178a4451c09560061e76 100644 (file)
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -666,6 +666,10 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc,
                        qp->qu_limit = cpu_to_be64(fdq->d_blk_hardlimit >> sdp->sd_fsb2bb_shift);
                        qd->qd_qb.qb_limit = qp->qu_limit;
                }
+               if (fdq->d_fieldmask & FS_DQ_BCOUNT) {
+                       qp->qu_value = cpu_to_be64(fdq->d_bcount >> sdp->sd_fsb2bb_shift);
+                       qd->qd_qb.qb_value = qp->qu_value;
+               }
        }
 
        /* Write the quota into the quota file on disk */
@@ -1509,7 +1513,7 @@ out:
 }
 
 /* GFS2 only supports a subset of the XFS fields */
-#define GFS2_FIELDMASK (FS_DQ_BSOFT|FS_DQ_BHARD)
+#define GFS2_FIELDMASK (FS_DQ_BSOFT|FS_DQ_BHARD|FS_DQ_BCOUNT)
 
 static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
                          struct fs_disk_quota *fdq)
@@ -1569,9 +1573,15 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
        if ((fdq->d_fieldmask & FS_DQ_BSOFT) &&
            ((fdq->d_blk_softlimit >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_warn)))
                fdq->d_fieldmask ^= FS_DQ_BSOFT;
+
        if ((fdq->d_fieldmask & FS_DQ_BHARD) &&
            ((fdq->d_blk_hardlimit >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_limit)))
                fdq->d_fieldmask ^= FS_DQ_BHARD;
+
+       if ((fdq->d_fieldmask & FS_DQ_BCOUNT) &&
+           ((fdq->d_bcount >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_value)))
+               fdq->d_fieldmask ^= FS_DQ_BCOUNT;
+
        if (fdq->d_fieldmask == 0)
                goto out_i;
 
@@ -1620,4 +1630,3 @@ const struct quotactl_ops gfs2_quotactl_ops = {
        .get_dqblk      = gfs2_get_dqblk,
        .set_dqblk      = gfs2_set_dqblk,
 };
-