fs/quota/quota_v2.c

25 static void v2r0_mem2diskdqb(void *dp, struct dquot *dquot);
26 static void v2r0_disk2memdqb(struct dquot *dquot, void *dp);
27 static int v2r0_is_id(void *dp, struct dquot *dquot);
28 static void v2r1_mem2diskdqb(void *dp, struct dquot *dquot);
29 static void v2r1_disk2memdqb(struct dquot *dquot, void *dp);
30 static int v2r1_is_id(void *dp, struct dquot *dquot);
229 static void v2r0_disk2memdqb(struct dquot *dquot, void *dp)
232 	struct mem_dqblk *m = &dquot->dq_dqb;
249 static void v2r0_mem2diskdqb(void *dp, struct dquot *dquot)
252 	struct mem_dqblk *m = &dquot->dq_dqb;
254 			sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv;
264 	d->dqb_id = cpu_to_le32(from_kqid(&init_user_ns, dquot->dq_id));
269 static int v2r0_is_id(void *dp, struct dquot *dquot)
273 			sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv;
277 	return qid_eq(make_kqid(&init_user_ns, dquot->dq_id.type,
279 		      dquot->dq_id);
282 static void v2r1_disk2memdqb(struct dquot *dquot, void *dp)
285 	struct mem_dqblk *m = &dquot->dq_dqb;
302 static void v2r1_mem2diskdqb(void *dp, struct dquot *dquot)
305 	struct mem_dqblk *m = &dquot->dq_dqb;
307 			sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv;
317 	d->dqb_id = cpu_to_le32(from_kqid(&init_user_ns, dquot->dq_id));
323 static int v2r1_is_id(void *dp, struct dquot *dquot)
327 			sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv;
331 	return qid_eq(make_kqid(&init_user_ns, dquot->dq_id.type,
333 		      dquot->dq_id);
336 static int v2_read_dquot(struct dquot *dquot)
338 	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
345 			sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv,
346 			dquot);
352 static int v2_write_dquot(struct dquot *dquot)
354 	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
360 	 * If space for dquot is already allocated, we don't need any
361 	 * protection as we'll only overwrite the place of dquot. We are
362 	 * still protected by concurrent writes of the same dquot by
363 	 * dquot->dq_lock.
365 	if (!dquot->dq_off) {
373 			sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv,
374 			dquot);
383 static int v2_release_dquot(struct dquot *dquot)
385 	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
391 	ret = qtree_release_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot);