Commit de69e5f4 authored by Nathan Scott's avatar Nathan Scott
Browse files

[XFS] Add a mechanism for XFS to use the generic quota sync method. 


This is now used to issue a delayed allocation flush before reporting
quota, which allows the used space quota report to match reality.

Signed-off-by: default avatarNathan Scott <nathans@sgi.com>
parent a2f8e178

fs/quota.c

+7 −1
Original line number Diff line number Diff line
@@ -118,6 +118,10 @@ static int xqm_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t i 
			if (!sb->s_qcop->get_xquota)

				return -ENOSYS;

			break;

		case Q_XQUOTASYNC:

			if (!sb->s_qcop->quota_sync)

				return -ENOSYS;

			break;

		default:

			return -EINVAL;

	}
@@ -128,7 +132,7 @@ static int xqm_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t i 
		     (type == XQM_GRPQUOTA && !in_egroup_p(id))) &&

		     !capable(CAP_SYS_ADMIN))

			return -EPERM;

	} else if (cmd != Q_XGETQSTAT) {

	} else if (cmd != Q_XGETQSTAT && cmd != Q_XQUOTASYNC) {

		if (!capable(CAP_SYS_ADMIN))

			return -EPERM;

	}
@@ -322,6 +326,8 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, void 
				return -EFAULT;

			return 0;

		}

		case Q_XQUOTASYNC:

			return sb->s_qcop->quota_sync(sb, type);

		/* We never reach here unless validity check is broken */

		default:

			BUG();

include/linux/dqblk_xfs.h

+1 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#define Q_XSETQLIM	XQM_CMD(4)	/* set disk limits */

#define Q_XGETQSTAT	XQM_CMD(5)	/* get quota subsystem status */

#define Q_XQUOTARM	XQM_CMD(6)	/* free disk space used by dquots */

#define Q_XQUOTASYNC	XQM_CMD(7)	/* delalloc flush, updates dquots */



/*

 * fs_disk_quota structure: