linux-kernel - [f2fs-dev] [PATCH 1/2] f2fs: introduce f2fs_has_xattr

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Message-id: <000001cf41bb$f0754220$d15fc660$@samsung.com>
Date:	Mon, 17 Mar 2014 16:35:06 +0800
From:	Chao Yu <chao2.yu@...sung.com>
To:	??? <jaegeuk.kim@...sung.com>
Cc:	linux-f2fs-devel@...ts.sourceforge.net,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [f2fs-dev] [PATCH 1/2] f2fs: introduce f2fs_has_xattr_block for better
 readability

This patch introduces a help function f2fs_has_xattr_block for better
readability.

Signed-off-by: Chao Yu <chao2.yu@...sung.com>
---
 fs/f2fs/f2fs.h |    5 +++++
 fs/f2fs/node.c |    4 ++--
 fs/f2fs/node.h |    2 +-
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 1f87a04..292cc3c 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -637,6 +637,11 @@ static inline int F2FS_HAS_BLOCKS(struct inode *inode)
 		return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
 }
 
+static inline bool f2fs_has_xattr_block(unsigned int ofs)
+{
+	return ofs == XATTR_NODE_OFFSET;
+}
+
 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
 				 struct inode *inode, blkcnt_t count)
 {
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index c618fad..3e36240 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -836,7 +836,7 @@ struct page *new_node_page(struct dnode_of_data *dn,
 	SetPageUptodate(page);
 	set_page_dirty(page);
 
-	if (ofs == XATTR_NODE_OFFSET)
+	if (f2fs_has_xattr_block(ofs))
 		F2FS_I(dn->inode)->i_xattr_nid = dn->nid;
 
 	dn->node_page = page;
@@ -1533,7 +1533,7 @@ bool recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr)
 
 	recover_inline_xattr(inode, page);
 
-	if (ofs_of_node(page) != XATTR_NODE_OFFSET)
+	if (!f2fs_has_xattr_block(ofs_of_node(page)))
 		return false;
 
 	/* 1: invalidate the previous xattr nid */
diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
index 4dea719..ee6d286 100644
--- a/fs/f2fs/node.h
+++ b/fs/f2fs/node.h
@@ -242,7 +242,7 @@ static inline bool IS_DNODE(struct page *node_page)
 {
 	unsigned int ofs = ofs_of_node(node_page);
 
-	if (ofs == XATTR_NODE_OFFSET)
+	if (f2fs_has_xattr_block(ofs))
 		return false;
 
 	if (ofs == 3 || ofs == 4 + NIDS_PER_BLOCK ||
-- 
1.7.9.5


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