shithub: lwext4

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EA: ea entries with name "system.data" should be
    preferentially stored in inode body.

--- a/lwext4/ext4_types.h

+++ b/lwext4/ext4_types.h

@@ -823,6 +823,9 @@

 } __attribute__((packed));

 struct ext4_xattr_item {

+	/* This attribute should be stored in inode body */

+	bool in_inode;

+

 	uint8_t name_index;

 	char  *name;

 	size_t name_len;

--- a/lwext4/ext4_xattr.c

+++ b/lwext4/ext4_xattr.c

@@ -163,6 +163,12 @@

 			       struct ext4_xattr_item *b)

 {

 	int result;

+	if (a->in_inode && !b->in_inode)

+		return -1;

+	

+	if (!a->in_inode && b->in_inode)

+		return 1;

+

 	result = a->name_index - b->name_index;

 	if (result)

 		return result;

@@ -194,6 +200,11 @@

 	memset(&item->node, 0, sizeof(item->node));

 	memcpy(item->name, name, name_len);

+	if (name_index == EXT4_XATTR_INDEX_SYSTEM &&

+	    name_len == 4 &&

+	    !memcmp(name, "data", 4))

+		item->in_inode = true;

+

 	return item;

 }

@@ -404,6 +415,10 @@

 		.name = (char *)name, /*RB_FIND - won't touch this string*/

 		.name_len = name_len,

 	};

+	if (name_index == EXT4_XATTR_INDEX_SYSTEM &&

+	    name_len == 4 &&

+	    !memcmp(name, "data", 4))

+		tmp.in_inode = true;

 	return RB_FIND(ext4_xattr_tree, &xattr_ref->root, &tmp);

 }