[PATCH] f2fs: introduce help function F2FS_NODE()
From: Gu Zheng
Date: Mon Jul 15 2013 - 06:01:15 EST
Introduce help function F2FS_NODE() to simplify the conversion of node_page to
f2fs_node.
Signed-off-by: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
---
fs/f2fs/data.c | 2 +-
fs/f2fs/dir.c | 2 +-
fs/f2fs/f2fs.h | 9 +++++++--
fs/f2fs/file.c | 2 +-
fs/f2fs/inode.c | 4 ++--
fs/f2fs/node.c | 10 +++++-----
fs/f2fs/node.h | 40 ++++++++++++++++------------------------
fs/f2fs/recovery.c | 6 ++----
8 files changed, 35 insertions(+), 40 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 035f9a3..c73c394 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -39,7 +39,7 @@ static void __set_data_blkaddr(struct dnode_of_data *dn,
block_t new_addr)
wait_on_page_writeback(node_page);
- rn = (struct f2fs_node *)page_address(node_page);
+ rn = F2FS_NODE(node_page);
/* Get physical address of data block */
addr_array = blkaddr_in_node(rn);
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 62f0d59..89ecb37 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -270,7 +270,7 @@ static void init_dent_inode(const struct qstr *name, struct
page *ipage)
struct f2fs_node *rn;
/* copy name info. to this inode page */
- rn = (struct f2fs_node *)page_address(ipage);
+ rn = F2FS_NODE(ipage);
rn->i.i_namelen = cpu_to_le32(name->len);
memcpy(rn->i.i_name, name->name, name->len);
set_page_dirty(ipage);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index c7620b9..ffa34f4 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -455,6 +455,11 @@ static inline struct f2fs_checkpoint *F2FS_CKPT(struct
f2fs_sb_info *sbi)
return (struct f2fs_checkpoint *)(sbi->ckpt);
}
+static inline struct f2fs_node *F2FS_NODE(struct page *page)
+{
+ return (struct f2fs_node *)page_address(page);
+}
+
static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
{
return (struct f2fs_nm_info *)(sbi->nm_info);
@@ -813,7 +818,7 @@ static inline struct kmem_cache
*f2fs_kmem_cache_create(const char *name,
static inline bool IS_INODE(struct page *page)
{
- struct f2fs_node *p = (struct f2fs_node *)page_address(page);
+ struct f2fs_node *p = F2FS_NODE(page);
return RAW_IS_INODE(p);
}
@@ -827,7 +832,7 @@ static inline block_t datablock_addr(struct page *node_page,
{
struct f2fs_node *raw_node;
__le32 *addr_array;
- raw_node = (struct f2fs_node *)page_address(node_page);
+ raw_node = F2FS_NODE(node_page);
addr_array = blkaddr_in_node(raw_node);
return le32_to_cpu(addr_array[offset]);
}
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 157a635..65ca3b3 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -206,7 +206,7 @@ int truncate_data_blocks_range(struct dnode_of_data *dn, int
count)
struct f2fs_node *raw_node;
__le32 *addr;
- raw_node = page_address(dn->node_page);
+ raw_node = F2FS_NODE(dn->node_page);
addr = blkaddr_in_node(raw_node) + ofs;
for ( ; count > 0; count--, addr++, dn->ofs_in_node++) {
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 2b2d45d1..debf743 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -56,7 +56,7 @@ static int do_read_inode(struct inode *inode)
if (IS_ERR(node_page))
return PTR_ERR(node_page);
- rn = page_address(node_page);
+ rn = F2FS_NODE(node_page);
ri = &(rn->i);
inode->i_mode = le16_to_cpu(ri->i_mode);
@@ -153,7 +153,7 @@ void update_inode(struct inode *inode, struct page *node_page)
wait_on_page_writeback(node_page);
- rn = page_address(node_page);
+ rn = F2FS_NODE(node_page);
ri = &(rn->i);
ri->i_mode = cpu_to_le16(inode->i_mode);
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index b418aee..f5172e2 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -565,7 +565,7 @@ static int truncate_nodes(struct dnode_of_data *dn, unsigned
int nofs,
return PTR_ERR(page);
}
- rn = (struct f2fs_node *)page_address(page);
+ rn = F2FS_NODE(page);
if (depth < 3) {
for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) {
child_nid = le32_to_cpu(rn->in.nid[i]);
@@ -698,7 +698,7 @@ restart:
set_new_dnode(&dn, inode, page, NULL, 0);
unlock_page(page);
- rn = page_address(page);
+ rn = F2FS_NODE(page);
switch (level) {
case 0:
case 1:
@@ -1484,8 +1484,8 @@ int recover_inode_page(struct f2fs_sb_info *sbi, struct
page *page)
SetPageUptodate(ipage);
fill_node_footer(ipage, ino, ino, 0, true);
- src = (struct f2fs_node *)page_address(page);
- dst = (struct f2fs_node *)page_address(ipage);
+ src = F2FS_NODE(page);
+ dst = F2FS_NODE(ipage);
memcpy(dst, src, (unsigned long)&src->i.i_ext - (unsigned long)&src->i);
dst->i.i_size = 0;
@@ -1535,7 +1535,7 @@ int restore_node_summary(struct f2fs_sb_info *sbi,
goto out;
lock_page(page);
- rn = (struct f2fs_node *)page_address(page);
+ rn = F2FS_NODE(page);
sum_entry->nid = rn->footer.nid;
sum_entry->version = 0;
sum_entry->ofs_in_node = 0;
diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
index c65fb4f..87349c4 100644
--- a/fs/f2fs/node.h
+++ b/fs/f2fs/node.h
@@ -155,8 +155,7 @@ static inline void set_to_next_nat(struct f2fs_nm_info
*nm_i, nid_t start_nid)
static inline void fill_node_footer(struct page *page, nid_t nid,
nid_t ino, unsigned int ofs, bool reset)
{
- void *kaddr = page_address(page);
- struct f2fs_node *rn = (struct f2fs_node *)kaddr;
+ struct f2fs_node *rn = F2FS_NODE(page);
if (reset)
memset(rn, 0, sizeof(*rn));
rn->footer.nid = cpu_to_le32(nid);
@@ -166,10 +165,8 @@ static inline void fill_node_footer(struct page *page,
nid_t nid,
static inline void copy_node_footer(struct page *dst, struct page *src)
{
- void *src_addr = page_address(src);
- void *dst_addr = page_address(dst);
- struct f2fs_node *src_rn = (struct f2fs_node *)src_addr;
- struct f2fs_node *dst_rn = (struct f2fs_node *)dst_addr;
+ struct f2fs_node *src_rn = F2FS_NODE(src);
+ struct f2fs_node *dst_rn = F2FS_NODE(dst);
memcpy(&dst_rn->footer, &src_rn->footer, sizeof(struct node_footer));
}
@@ -177,45 +174,40 @@ static inline void fill_node_footer_blkaddr(struct page
*page, block_t blkaddr)
{
struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb);
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
- void *kaddr = page_address(page);
- struct f2fs_node *rn = (struct f2fs_node *)kaddr;
+ struct f2fs_node *rn = F2FS_NODE(page);
+
rn->footer.cp_ver = ckpt->checkpoint_ver;
rn->footer.next_blkaddr = cpu_to_le32(blkaddr);
}
static inline nid_t ino_of_node(struct page *node_page)
{
- void *kaddr = page_address(node_page);
- struct f2fs_node *rn = (struct f2fs_node *)kaddr;
+ struct f2fs_node *rn = F2FS_NODE(node_page);
return le32_to_cpu(rn->footer.ino);
}
static inline nid_t nid_of_node(struct page *node_page)
{
- void *kaddr = page_address(node_page);
- struct f2fs_node *rn = (struct f2fs_node *)kaddr;
+ struct f2fs_node *rn = F2FS_NODE(node_page);
return le32_to_cpu(rn->footer.nid);
}
static inline unsigned int ofs_of_node(struct page *node_page)
{
- void *kaddr = page_address(node_page);
- struct f2fs_node *rn = (struct f2fs_node *)kaddr;
+ struct f2fs_node *rn = F2FS_NODE(node_page);
unsigned flag = le32_to_cpu(rn->footer.flag);
return flag >> OFFSET_BIT_SHIFT;
}
static inline unsigned long long cpver_of_node(struct page *node_page)
{
- void *kaddr = page_address(node_page);
- struct f2fs_node *rn = (struct f2fs_node *)kaddr;
+ struct f2fs_node *rn = F2FS_NODE(node_page);
return le64_to_cpu(rn->footer.cp_ver);
}
static inline block_t next_blkaddr_of_node(struct page *node_page)
{
- void *kaddr = page_address(node_page);
- struct f2fs_node *rn = (struct f2fs_node *)kaddr;
+ struct f2fs_node *rn = F2FS_NODE(node_page);
return le32_to_cpu(rn->footer.next_blkaddr);
}
@@ -250,7 +242,7 @@ static inline bool IS_DNODE(struct page *node_page)
static inline void set_nid(struct page *p, int off, nid_t nid, bool i)
{
- struct f2fs_node *rn = (struct f2fs_node *)page_address(p);
+ struct f2fs_node *rn = F2FS_NODE(p);
wait_on_page_writeback(p);
@@ -263,7 +255,8 @@ static inline void set_nid(struct page *p, int off, nid_t
nid, bool i)
static inline nid_t get_nid(struct page *p, int off, bool i)
{
- struct f2fs_node *rn = (struct f2fs_node *)page_address(p);
+ struct f2fs_node *rn = F2FS_NODE(p);
+
if (i)
return le32_to_cpu(rn->i.i_nid[off - NODE_DIR1_BLOCK]);
return le32_to_cpu(rn->in.nid[off]);
@@ -314,8 +307,7 @@ static inline void clear_cold_data(struct page *page)
static inline int is_node(struct page *page, int type)
{
- void *kaddr = page_address(page);
- struct f2fs_node *rn = (struct f2fs_node *)kaddr;
+ struct f2fs_node *rn = F2FS_NODE(page);
return le32_to_cpu(rn->footer.flag) & (1 << type);
}
@@ -325,7 +317,7 @@ static inline int is_node(struct page *page, int type)
static inline void set_cold_node(struct inode *inode, struct page *page)
{
- struct f2fs_node *rn = (struct f2fs_node *)page_address(page);
+ struct f2fs_node *rn = F2FS_NODE(page);
unsigned int flag = le32_to_cpu(rn->footer.flag);
if (S_ISDIR(inode->i_mode))
@@ -337,7 +329,7 @@ static inline void set_cold_node(struct inode *inode, struct
page *page)
static inline void set_mark(struct page *page, int mark, int type)
{
- struct f2fs_node *rn = (struct f2fs_node *)page_address(page);
+ struct f2fs_node *rn = F2FS_NODE(page);
unsigned int flag = le32_to_cpu(rn->footer.flag);
if (mark)
flag |= (0x1 << type);
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index d56d951..639eb34 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -40,8 +40,7 @@ static struct fsync_inode_entry *get_fsync_inode(struct
list_head *head,
static int recover_dentry(struct page *ipage, struct inode *inode)
{
- void *kaddr = page_address(ipage);
- struct f2fs_node *raw_node = (struct f2fs_node *)kaddr;
+ struct f2fs_node *raw_node = F2FS_NODE(ipage);
struct f2fs_inode *raw_inode = &(raw_node->i);
nid_t pino = le32_to_cpu(raw_inode->i_pino);
struct f2fs_dir_entry *de;
@@ -93,8 +92,7 @@ out:
static int recover_inode(struct inode *inode, struct page *node_page)
{
- void *kaddr = page_address(node_page);
- struct f2fs_node *raw_node = (struct f2fs_node *)kaddr;
+ struct f2fs_node *raw_node = F2FS_NODE(node_page);
struct f2fs_inode *raw_inode = &(raw_node->i);
if (!IS_INODE(node_page))
--
1.7.7
--
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