1 files changed, 48 insertions, 12 deletions

diff --git a/fs/xfs/xfs_pnfs.c b/fs/xfs/xfs_pnfs.c
index bb3008d390aa..37a24f0f7cd4 100644
--- a/fs/xfs/xfs_pnfs.c
+++ b/fs/xfs/xfs_pnfs.c
@@ -58,9 +58,8 @@ xfs_fs_get_uuid(
 {
 	struct xfs_mount	*mp = XFS_M(sb);
 
-	printk_once(KERN_NOTICE
-"XFS (%s): using experimental pNFS feature, use at your own risk!\n",
-		mp->m_super->s_id);
+	xfs_notice_once(mp,
+"Using experimental pNFS feature, use at your own risk!");
 
 	if (*len < sizeof(uuid_t))
 		return -EINVAL;
@@ -72,6 +71,40 @@ xfs_fs_get_uuid(
 }
 
 /*
+ * We cannot use file based VFS helpers such as file_modified() to update
+ * inode state as we modify the data/metadata in the inode here. Hence we have
+ * to open code the timestamp updates and SUID/SGID stripping. We also need
+ * to set the inode prealloc flag to ensure that the extents we allocate are not
+ * removed if the inode is reclaimed from memory before xfs_fs_block_commit()
+ * is from the client to indicate that data has been written and the file size
+ * can be extended.
+ */
+static int
+xfs_fs_map_update_inode(
+	struct xfs_inode	*ip)
+{
+	struct xfs_trans	*tp;
+	int			error;
+
+	error = xfs_trans_alloc(ip->i_mount, &M_RES(ip->i_mount)->tr_writeid,
+			0, 0, 0, &tp);
+	if (error)
+		return error;
+
+	xfs_ilock(ip, XFS_ILOCK_EXCL);
+	xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+
+	VFS_I(ip)->i_mode &= ~S_ISUID;
+	if (VFS_I(ip)->i_mode & S_IXGRP)
+		VFS_I(ip)->i_mode &= ~S_ISGID;
+	xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
+	ip->i_diflags |= XFS_DIFLAG_PREALLOC;
+
+	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+	return xfs_trans_commit(tp);
+}
+
+/*
  * Get a layout for the pNFS client.
  */
 int
@@ -93,7 +126,7 @@ xfs_fs_map_blocks(
 	uint			lock_flags;
 	int			error = 0;
 
-	if (XFS_FORCED_SHUTDOWN(mp))
+	if (xfs_is_shutdown(mp))
 		return -EIO;
 
 	/*
@@ -135,7 +168,7 @@ xfs_fs_map_blocks(
 		goto out_unlock;
 	error = invalidate_inode_pages2(inode->i_mapping);
 	if (WARN_ON_ONCE(error))
-		return error;
+		goto out_unlock;
 
 	end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + length);
 	offset_fsb = XFS_B_TO_FSBT(mp, offset);
@@ -156,7 +189,7 @@ xfs_fs_map_blocks(
 		xfs_iunlock(ip, lock_flags);
 
 		error = xfs_iomap_write_direct(ip, offset_fsb,
-				end_fsb - offset_fsb, &imap);
+				end_fsb - offset_fsb, 0, &imap);
 		if (error)
 			goto out_unlock;
 
@@ -165,16 +198,18 @@ xfs_fs_map_blocks(
 		 * that the blocks allocated and handed out to the client are
 		 * guaranteed to be present even after a server crash.
 		 */
-		error = xfs_update_prealloc_flags(ip,
-				XFS_PREALLOC_SET | XFS_PREALLOC_SYNC);
+		error = xfs_fs_map_update_inode(ip);
+		if (!error)
+			error = xfs_log_force_inode(ip);
 		if (error)
 			goto out_unlock;
+
 	} else {
 		xfs_iunlock(ip, lock_flags);
 	}
 	xfs_iunlock(ip, XFS_IOLOCK_EXCL);
 
-	error = xfs_bmbt_to_iomap(ip, iomap, &imap, 0);
+	error = xfs_bmbt_to_iomap(ip, iomap, &imap, 0, 0);
 	*device_generation = mp->m_generation;
 	return error;
 out_unlock:
@@ -256,7 +291,7 @@ xfs_fs_commit_blocks(
 		length = end - start;
 		if (!length)
 			continue;
-	
+
 		/*
 		 * Make sure reads through the pagecache see the new data.
 		 */
@@ -284,10 +319,11 @@ xfs_fs_commit_blocks(
 	xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
 
-	xfs_setattr_time(ip, iattr);
+	ASSERT(!(iattr->ia_valid & (ATTR_UID | ATTR_GID)));
+	setattr_copy(&init_user_ns, inode, iattr);
 	if (update_isize) {
 		i_size_write(inode, iattr->ia_size);
-		ip->i_d.di_size = iattr->ia_size;
+		ip->i_disk_size = iattr->ia_size;
 	}
 
 	xfs_trans_set_sync(tp);