[XFS] Provide a mechiansm for flushing delalloc before quota reporting.

SGI-PV: 942815
SGI-Modid: xfs-linux:xfs-kern:23829a
Signed-off-by: Nathan Scott <nathans@sgi.com>

fs/xfs/linux-2.6/xfs_fs_subr.c

@@ -117,6 +117,8 @@ fs_flush_pages(
 
 	if (VN_CACHED(vp)) {
 		filemap_fdatawrite(ip->i_mapping);
+		if (flags & XFS_B_ASYNC)
+			return 0;
 		filemap_fdatawait(ip->i_mapping);
 	}
 

fs/xfs/linux-2.6/xfs_super.c

@@ -766,6 +766,18 @@ linvfs_show_options(
 	return error;
 }
 
+STATIC int
+linvfs_quotasync(
+	struct super_block	*sb,
+	int			type)
+{
+	struct vfs		*vfsp = LINVFS_GET_VFS(sb);
+	int			error;
+
+	VFS_QUOTACTL(vfsp, Q_XQUOTASYNC, 0, (caddr_t)NULL, error);
+	return -error;
+}
+
 STATIC int
 linvfs_getxstate(
 	struct super_block	*sb,
@@ -934,6 +946,7 @@ STATIC struct super_operations linvfs_sops = {
 };
 
 STATIC struct quotactl_ops linvfs_qops = {
+	.quota_sync		= linvfs_quotasync,
 	.get_xstate		= linvfs_getxstate,
 	.set_xstate		= linvfs_setxstate,
 	.get_xquota		= linvfs_getxquota,

fs/xfs/quota/xfs_qm_syscalls.c

 /*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.  All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License as
@@ -109,7 +109,7 @@ xfs_qm_quotactl(
 	vfsp = bhvtovfs(bdp);
 	mp = XFS_VFSTOM(vfsp);
 
-	ASSERT(addr != NULL);
+	ASSERT(addr != NULL || cmd == Q_XQUOTASYNC);
 
 	/*
 	 * The following commands are valid even when quotaoff.
@@ -147,6 +147,9 @@ xfs_qm_quotactl(
 			return XFS_ERROR(EROFS);
 		break;
 
+	case Q_XQUOTASYNC:
+		return (xfs_sync_inodes(mp, SYNC_DELWRI, 0, NULL));
+
 	default:
 		break;
 	}

fs/xfs/xfs_mount.h

@@ -556,6 +556,7 @@ extern int	xfs_readsb(xfs_mount_t *mp);
 extern void	xfs_freesb(xfs_mount_t *);
 extern void	xfs_do_force_shutdown(bhv_desc_t *, int, char *, int);
 extern int	xfs_syncsub(xfs_mount_t *, int, int, int *);
+extern int	xfs_sync_inodes(xfs_mount_t *, int, int, int *);
 extern xfs_agnumber_t	xfs_initialize_perag(xfs_mount_t *, xfs_agnumber_t);
 extern void	xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t);
 

fs/xfs/xfs_vfsops.c

@@ -903,7 +903,7 @@ xfs_sync(
  * only available by calling this routine.
  *
  */
-STATIC int
+int
 xfs_sync_inodes(
 	xfs_mount_t	*mp,
 	int		flags,
@@ -987,7 +987,7 @@ xfs_sync_inodes(
 	ipointer = (xfs_iptr_t *)kmem_zalloc(sizeof(xfs_iptr_t), KM_SLEEP);
 
 	fflag = XFS_B_ASYNC;		/* default is don't wait */
-	if (flags & SYNC_BDFLUSH)
+	if (flags & (SYNC_BDFLUSH | SYNC_DELWRI))
 		fflag = XFS_B_DELWRI;
 	if (flags & SYNC_WAIT)
 		fflag = 0;		/* synchronous overrides all */