From 58bfaf44df58082c72882b235cae611c975537d4 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Thu, 26 Dec 2013 16:30:41 +0900 Subject: [PATCH] f2fs: introduce F2FS_INODE macro to get f2fs_inode This patch introduces F2FS_INODE that returns struct f2fs_inode * from the inode page. By using this macro, we can remove unnecessary casting codes like below. struct f2fs_inode *ri = &F2FS_NODE(inode_page)->i; -> struct f2fs_inode *ri = F2FS_INODE(inode_page); Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/dir.c | 8 ++++---- fs/f2fs/f2fs.h | 5 +++++ fs/f2fs/inode.c | 8 ++------ fs/f2fs/node.c | 30 +++++++++++++++--------------- fs/f2fs/recovery.c | 6 ++---- 5 files changed, 28 insertions(+), 29 deletions(-) diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index f0b4630..6da77e5 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -261,12 +261,12 @@ void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de, static void init_dent_inode(const struct qstr *name, struct page *ipage) { - struct f2fs_node *rn; + struct f2fs_inode *ri; /* copy name info. to this inode page */ - rn = F2FS_NODE(ipage); - rn->i.i_namelen = cpu_to_le32(name->len); - memcpy(rn->i.i_name, name->name, name->len); + ri = F2FS_INODE(ipage); + ri->i_namelen = cpu_to_le32(name->len); + memcpy(ri->i_name, name->name, name->len); set_page_dirty(ipage); } diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index ba91186..1a06f0a 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -498,6 +498,11 @@ static inline struct f2fs_node *F2FS_NODE(struct page *page) return (struct f2fs_node *)page_address(page); } +static inline struct f2fs_inode *F2FS_INODE(struct page *page) +{ + return &((struct f2fs_node *)page_address(page))->i; +} + static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) { return (struct f2fs_nm_info *)(sbi->nm_info); diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index d0eaa9f..a91f451 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -67,7 +67,6 @@ static int do_read_inode(struct inode *inode) struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct f2fs_inode_info *fi = F2FS_I(inode); struct page *node_page; - struct f2fs_node *rn; struct f2fs_inode *ri; /* Check if ino is within scope */ @@ -81,8 +80,7 @@ static int do_read_inode(struct inode *inode) if (IS_ERR(node_page)) return PTR_ERR(node_page); - rn = F2FS_NODE(node_page); - ri = &(rn->i); + ri = F2FS_INODE(node_page); inode->i_mode = le16_to_cpu(ri->i_mode); i_uid_write(inode, le32_to_cpu(ri->i_uid)); @@ -175,13 +173,11 @@ bad_inode: void update_inode(struct inode *inode, struct page *node_page) { - struct f2fs_node *rn; struct f2fs_inode *ri; f2fs_wait_on_page_writeback(node_page, NODE, false); - rn = F2FS_NODE(node_page); - ri = &(rn->i); + ri = F2FS_INODE(node_page); ri->i_mode = cpu_to_le16(inode->i_mode); ri->i_advise = F2FS_I(inode)->i_advise; diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index e8fe52d6..9405a17 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -684,7 +684,7 @@ int truncate_inode_blocks(struct inode *inode, pgoff_t from) int err = 0, cont = 1; int level, offset[4], noffset[4]; unsigned int nofs = 0; - struct f2fs_node *rn; + struct f2fs_inode *ri; struct dnode_of_data dn; struct page *page; @@ -701,7 +701,7 @@ restart: set_new_dnode(&dn, inode, page, NULL, 0); unlock_page(page); - rn = F2FS_NODE(page); + ri = F2FS_INODE(page); switch (level) { case 0: case 1: @@ -711,7 +711,7 @@ restart: nofs = noffset[1]; if (!offset[level - 1]) goto skip_partial; - err = truncate_partial_nodes(&dn, &rn->i, offset, level); + err = truncate_partial_nodes(&dn, ri, offset, level); if (err < 0 && err != -ENOENT) goto fail; nofs += 1 + NIDS_PER_BLOCK; @@ -720,7 +720,7 @@ restart: nofs = 5 + 2 * NIDS_PER_BLOCK; if (!offset[level - 1]) goto skip_partial; - err = truncate_partial_nodes(&dn, &rn->i, offset, level); + err = truncate_partial_nodes(&dn, ri, offset, level); if (err < 0 && err != -ENOENT) goto fail; break; @@ -730,7 +730,7 @@ restart: skip_partial: while (cont) { - dn.nid = le32_to_cpu(rn->i.i_nid[offset[0] - NODE_DIR1_BLOCK]); + dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); switch (offset[0]) { case NODE_DIR1_BLOCK: case NODE_DIR2_BLOCK: @@ -753,14 +753,14 @@ skip_partial: if (err < 0 && err != -ENOENT) goto fail; if (offset[1] == 0 && - rn->i.i_nid[offset[0] - NODE_DIR1_BLOCK]) { + ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { lock_page(page); if (unlikely(page->mapping != node_mapping)) { f2fs_put_page(page, 1); goto restart; } wait_on_page_writeback(page); - rn->i.i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; + ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; set_page_dirty(page); unlock_page(page); } @@ -1533,7 +1533,7 @@ void recover_node_page(struct f2fs_sb_info *sbi, struct page *page, int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) { struct address_space *mapping = sbi->node_inode->i_mapping; - struct f2fs_node *src, *dst; + struct f2fs_inode *src, *dst; nid_t ino = ino_of_node(page); struct node_info old_ni, new_ni; struct page *ipage; @@ -1549,14 +1549,14 @@ int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) SetPageUptodate(ipage); fill_node_footer(ipage, ino, ino, 0, true); - src = F2FS_NODE(page); - dst = F2FS_NODE(ipage); + src = F2FS_INODE(page); + dst = F2FS_INODE(ipage); - memcpy(dst, src, (unsigned long)&src->i.i_ext - (unsigned long)&src->i); - dst->i.i_size = 0; - dst->i.i_blocks = cpu_to_le64(1); - dst->i.i_links = cpu_to_le32(1); - dst->i.i_xattr_nid = 0; + memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); + dst->i_size = 0; + dst->i_blocks = cpu_to_le64(1); + dst->i_links = cpu_to_le32(1); + dst->i_xattr_nid = 0; new_ni = old_ni; new_ni.ino = ino; diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index 4d411a2..96e690b6 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) { - struct f2fs_node *raw_node = F2FS_NODE(ipage); - struct f2fs_inode *raw_inode = &(raw_node->i); + struct f2fs_inode *raw_inode = F2FS_INODE(ipage); nid_t pino = le32_to_cpu(raw_inode->i_pino); struct f2fs_dir_entry *de; struct qstr name; @@ -105,8 +104,7 @@ out: static int recover_inode(struct inode *inode, struct page *node_page) { - struct f2fs_node *raw_node = F2FS_NODE(node_page); - struct f2fs_inode *raw_inode = &(raw_node->i); + struct f2fs_inode *raw_inode = F2FS_INODE(node_page); if (!IS_INODE(node_page)) return 0; -- 2.7.4