xfs: open code updating i_mode in xfs_set_acl

Rather than going through the big and hairy xfs_setattr_nonsize function,
just open code a transactional i_mode and i_ctime update.  This allows
to mark xfs_setattr_nonsize and remove the flags argument to it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Gao Xiang <hsiangkao@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

fs/xfs/xfs_acl.c

@@ -16,6 +16,7 @@
 #include "xfs_acl.h"
 #include "xfs_da_format.h"
 #include "xfs_da_btree.h"
+#include "xfs_trans.h"
 
 #include <linux/posix_acl_xattr.h>
 
@@ -212,21 +213,28 @@ __xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
 }
 
 static int
-xfs_set_mode(struct inode *inode, umode_t mode)
+xfs_acl_set_mode(
+	struct inode		*inode,
+	umode_t			mode)
 {
-	int error = 0;
-
-	if (mode != inode->i_mode) {
-		struct iattr iattr;
+	struct xfs_inode	*ip = XFS_I(inode);
+	struct xfs_mount	*mp = ip->i_mount;
+	struct xfs_trans	*tp;
+	int			error;
 
-		iattr.ia_valid = ATTR_MODE | ATTR_CTIME;
-		iattr.ia_mode = mode;
-		iattr.ia_ctime = current_time(inode);
+	error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
+	if (error)
+		return error;
 
-		error = xfs_setattr_nonsize(XFS_I(inode), &iattr, XFS_ATTR_NOACL);
-	}
+	xfs_ilock(ip, XFS_ILOCK_EXCL);
+	xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+	inode->i_mode = mode;
+	inode->i_ctime = current_time(inode);
+	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
 
-	return error;
+	if (mp->m_flags & XFS_MOUNT_WSYNC)
+		xfs_trans_set_sync(tp);
+	return xfs_trans_commit(tp);
 }
 
 int
@@ -251,18 +259,14 @@ xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
 	}
 
  set_acl:
-	error =  __xfs_set_acl(inode, acl, type);
-	if (error)
-		return error;
-
 	/*
 	 * We set the mode after successfully updating the ACL xattr because the
 	 * xattr update can fail at ENOSPC and we don't want to change the mode
 	 * if the ACL update hasn't been applied.
 	 */
-	if (set_mode)
-		error = xfs_set_mode(inode, mode);
-
+	error =  __xfs_set_acl(inode, acl, type);
+	if (!error && set_mode && mode != inode->i_mode)
+		error = xfs_acl_set_mode(inode, mode);
 	return error;
 }
 

fs/xfs/xfs_iops.c

@@ -646,11 +646,10 @@ xfs_vn_change_ok(
  * Caution: The caller of this function is responsible for calling
  * setattr_prepare() or otherwise verifying the change is fine.
  */
-int
+static int
 xfs_setattr_nonsize(
 	struct xfs_inode	*ip,
-	struct iattr		*iattr,
-	int			flags)
+	struct iattr		*iattr)
 {
 	xfs_mount_t		*mp = ip->i_mount;
 	struct inode		*inode = VFS_I(ip);
@@ -807,7 +806,7 @@ xfs_setattr_nonsize(
 	 *	     to attr_set.  No previous user of the generic
 	 * 	     Posix ACL code seems to care about this issue either.
 	 */
-	if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) {
+	if (mask & ATTR_MODE) {
 		error = posix_acl_chmod(inode, inode->i_mode);
 		if (error)
 			return error;
@@ -863,7 +862,7 @@ xfs_setattr_size(
 		 * Use the regular setattr path to update the timestamps.
 		 */
 		iattr->ia_valid &= ~ATTR_SIZE;
-		return xfs_setattr_nonsize(ip, iattr, 0);
+		return xfs_setattr_nonsize(ip, iattr);
 	}
 
 	/*
@@ -1074,7 +1073,7 @@ xfs_vn_setattr(
 
 		error = xfs_vn_change_ok(dentry, iattr);
 		if (!error)
-			error = xfs_setattr_nonsize(ip, iattr, 0);
+			error = xfs_setattr_nonsize(ip, iattr);
 	}
 
 	return error;

fs/xfs/xfs_iops.h

@@ -13,14 +13,7 @@ extern const struct file_operations xfs_dir_file_operations;
 
 extern ssize_t xfs_vn_listxattr(struct dentry *, char *data, size_t size);
 
-/*
- * Internal setattr interfaces.
- */
-#define XFS_ATTR_NOACL		0x01	/* Don't call posix_acl_chmod */
-
 extern void xfs_setattr_time(struct xfs_inode *ip, struct iattr *iattr);
-extern int xfs_setattr_nonsize(struct xfs_inode *ip, struct iattr *vap,
-			       int flags);
 extern int xfs_vn_setattr_size(struct dentry *dentry, struct iattr *vap);
 
 #endif /* __XFS_IOPS_H__ */