0021-ext4-Enable-ext4-inline-support.patch

From db2a21d036834c326a901b88c5b223854022c621 Mon Sep 17 00:00:00 2001
From: Tao Ma <boyu.mt@taobao.com>
Date: Mon, 12 Dec 2011 17:24:57 +0800
Subject: [PATCH 21/22] ext4: Enable ext4 inline support.
Patch-mainline: in house

This patch enables ext4 inline support.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
---
Index: linux-2.6.32-279.2.1.el5/fs/ext4/ext4.h
===================================================================
--- linux-2.6.32-279.2.1.el5.orig/fs/ext4/ext4.h
+++ linux-2.6.32-279.2.1.el5/fs/ext4/ext4.h
@@ -1349,6 +1349,9 @@ EXT4_INODE_BIT_FNS(state, state_flags)
 #define EXT4_FEATURE_INCOMPAT_64BIT		0x0080
 #define EXT4_FEATURE_INCOMPAT_MMP               0x0100
 #define EXT4_FEATURE_INCOMPAT_FLEX_BG		0x0200
+#define EXT4_FEATURE_INCOMPAT_EA_INODE		0x0400 /* EA in inode */
+#define EXT4_FEATURE_INCOMPAT_DIRDATA		0x1000 /* data in dirent */
+#define EXT4_FEATURE_INCOMPAT_INLINEDATA	0x2000 /* data in inode */
 
 #define EXT4_FEATURE_COMPAT_SUPP	EXT2_FEATURE_COMPAT_EXT_ATTR
 #define EXT4_FEATURE_INCOMPAT_SUPP	(EXT4_FEATURE_INCOMPAT_FILETYPE| \
@@ -1356,7 +1359,9 @@ EXT4_INODE_BIT_FNS(state, state_flags)
 					 EXT4_FEATURE_INCOMPAT_META_BG| \
 					 EXT4_FEATURE_INCOMPAT_EXTENTS| \
 					 EXT4_FEATURE_INCOMPAT_64BIT| \
-					 EXT4_FEATURE_INCOMPAT_FLEX_BG)
+					 EXT4_FEATURE_INCOMPAT_FLEX_BG| \
+					 EXT4_FEATURE_INCOMPAT_MMP |	\
+					 EXT4_FEATURE_INCOMPAT_INLINEDATA)
 #define EXT4_FEATURE_RO_COMPAT_SUPP	(EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| \
 					 EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
 					 EXT4_FEATURE_RO_COMPAT_GDT_CSUM| \
Index: linux-2.6.32-279.2.1.el5/fs/ext4/ialloc.c
===================================================================
--- linux-2.6.32-279.2.1.el5.orig/fs/ext4/ialloc.c
+++ linux-2.6.32-279.2.1.el5/fs/ext4/ialloc.c
@@ -1040,6 +1040,10 @@ got:
 
 	ei->i_extra_isize = EXT4_SB(sb)->s_want_extra_isize;
 
+	ei->i_inline_off = 0;
+	if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_INLINEDATA))
+		ext4_set_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA);
+
 	ret = inode;
 	if (vfs_dq_alloc_inode(inode)) {
 		err = -EDQUOT;