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authorJan Kara <jack@suse.cz>2016-01-25 19:24:50 +0100
committerJan Kara <jack@suse.cz>2016-02-09 13:05:23 +0100
commitbe6257b251cebd2deb8c76d43e387e28e3f7412d (patch)
tree379bf76bed705eb93e7ab9902ddffd343a383fe4 /fs/quota
parent484a10f49387e4386bf2708532e75bf78ffea2cb (diff)
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quota: Add support for ->get_nextdqblk() for VFS quota
Add infrastructure for supporting get_nextdqblk() callback for VFS quotas. Translate the operation into a callback to appropriate filesystem and consequently to quota format callback. Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/quota')
-rw-r--r--fs/quota/dquot.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 3c3b81bb6dfe..7e0137bde6d6 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2031,6 +2031,21 @@ int dquot_commit_info(struct super_block *sb, int type)
}
EXPORT_SYMBOL(dquot_commit_info);
+int dquot_get_next_id(struct super_block *sb, struct kqid *qid)
+{
+ struct quota_info *dqopt = sb_dqopt(sb);
+ int err;
+
+ if (!dqopt->ops[qid->type]->get_next_id)
+ return -ENOSYS;
+ mutex_lock(&dqopt->dqio_mutex);
+ err = dqopt->ops[qid->type]->get_next_id(sb, qid);
+ mutex_unlock(&dqopt->dqio_mutex);
+
+ return err;
+}
+EXPORT_SYMBOL(dquot_get_next_id);
+
/*
* Definitions of diskquota operations.
*/
@@ -2042,6 +2057,7 @@ const struct dquot_operations dquot_operations = {
.write_info = dquot_commit_info,
.alloc_dquot = dquot_alloc,
.destroy_dquot = dquot_destroy,
+ .get_next_id = dquot_get_next_id,
};
EXPORT_SYMBOL(dquot_operations);
@@ -2565,6 +2581,27 @@ int dquot_get_dqblk(struct super_block *sb, struct kqid qid,
}
EXPORT_SYMBOL(dquot_get_dqblk);
+int dquot_get_next_dqblk(struct super_block *sb, struct kqid *qid,
+ struct qc_dqblk *di)
+{
+ struct dquot *dquot;
+ int err;
+
+ if (!sb->dq_op->get_next_id)
+ return -ENOSYS;
+ err = sb->dq_op->get_next_id(sb, qid);
+ if (err < 0)
+ return err;
+ dquot = dqget(sb, *qid);
+ if (IS_ERR(dquot))
+ return PTR_ERR(dquot);
+ do_get_dqblk(dquot, di);
+ dqput(dquot);
+
+ return 0;
+}
+EXPORT_SYMBOL(dquot_get_next_dqblk);
+
#define VFS_QC_MASK \
(QC_SPACE | QC_SPC_SOFT | QC_SPC_HARD | \
QC_INO_COUNT | QC_INO_SOFT | QC_INO_HARD | \
@@ -2765,6 +2802,7 @@ const struct quotactl_ops dquot_quotactl_ops = {
.get_state = dquot_get_state,
.set_info = dquot_set_dqinfo,
.get_dqblk = dquot_get_dqblk,
+ .get_nextdqblk = dquot_get_next_dqblk,
.set_dqblk = dquot_set_dqblk
};
EXPORT_SYMBOL(dquot_quotactl_ops);
@@ -2776,6 +2814,7 @@ const struct quotactl_ops dquot_quotactl_sysfile_ops = {
.get_state = dquot_get_state,
.set_info = dquot_set_dqinfo,
.get_dqblk = dquot_get_dqblk,
+ .get_nextdqblk = dquot_get_next_dqblk,
.set_dqblk = dquot_set_dqblk
};
EXPORT_SYMBOL(dquot_quotactl_sysfile_ops);