f2fs: introduce f2fs_has_inline_xattr for better readability

This patch introduces a help function f2fs_has_inline_xattr for better
readability.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index f845e92..1f87a04 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -991,9 +991,14 @@
 		ri->i_inline |= F2FS_INLINE_DATA;
 }
 
+static inline int f2fs_has_inline_xattr(struct inode *inode)
+{
+	return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
+}
+
 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
 {
-	if (is_inode_flag_set(fi, FI_INLINE_XATTR))
+	if (f2fs_has_inline_xattr(&fi->vfs_inode))
 		return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
 	return DEF_ADDRS_PER_INODE;
 }
@@ -1007,7 +1012,7 @@
 
 static inline int inline_xattr_size(struct inode *inode)
 {
-	if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR))
+	if (f2fs_has_inline_xattr(inode))
 		return F2FS_INLINE_XATTR_ADDRS << 2;
 	else
 		return 0;
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index e72b258..c618fad 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1501,7 +1501,7 @@
 	struct page *ipage;
 	struct f2fs_inode *ri;
 
-	if (!is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR))
+	if (!f2fs_has_inline_xattr(inode))
 		return;
 
 	if (!IS_INODE(page))