nilfs2: expand inode_inc_link_count and inode_dec_link_count

This is an intermidiate patch to reduce redandunt mark_inode_dirty() calls
by calling inode_inc_link_count() and inode_dec_link_count() functions.

Signed-off-by: Jiro SEKIBA <jir@unicus.jp>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
index 4616f96..f952439 100644 (file)
--- a/fs/nilfs2/namei.c
+++ b/fs/nilfs2/namei.c
@@ -200,7 +200,8 @@ out:
        return err;
 
 out_fail:
-       inode_dec_link_count(inode);
+       drop_nlink(inode);
+       mark_inode_dirty(inode);
        iput(inode);
        goto out;
 }
@@ -245,7 +246,8 @@ static int nilfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
        if (err)
                return err;
 
-       inode_inc_link_count(dir);
+       inc_nlink(dir);
+       mark_inode_dirty(dir);
 
        inode = nilfs_new_inode(dir, S_IFDIR | mode);
        err = PTR_ERR(inode);
@@ -256,7 +258,8 @@ static int nilfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
        inode->i_fop = &nilfs_dir_operations;
        inode->i_mapping->a_ops = &nilfs_aops;
 
-       inode_inc_link_count(inode);
+       inc_nlink(inode);
+       mark_inode_dirty(inode);
 
        err = nilfs_make_empty(inode, dir);
        if (err)
@@ -276,11 +279,14 @@ out:
        return err;
 
 out_fail:
-       inode_dec_link_count(inode);
-       inode_dec_link_count(inode);
+       drop_nlink(inode);
+       mark_inode_dirty(inode);
+       drop_nlink(inode);
+       mark_inode_dirty(inode);
        iput(inode);
 out_dir:
-       inode_dec_link_count(dir);
+       drop_nlink(dir);
+       mark_inode_dirty(dir);
        goto out;
 }
 
@@ -317,7 +323,8 @@ static int nilfs_unlink(struct inode *dir, struct dentry *dentry)
                goto out;
 
        inode->i_ctime = dir->i_ctime;
-       inode_dec_link_count(inode);
+       drop_nlink(inode);
+       mark_inode_dirty(inode);
        err = 0;
 out:
        if (!err)
@@ -343,8 +350,10 @@ static int nilfs_rmdir(struct inode *dir, struct dentry *dentry)
                err = nilfs_unlink(dir, dentry);
                if (!err) {
                        inode->i_size = 0;
-                       inode_dec_link_count(inode);
-                       inode_dec_link_count(dir);
+                       drop_nlink(inode);
+                       mark_inode_dirty(inode);
+                       drop_nlink(dir);
+                       mark_inode_dirty(dir);
                }
        }
        if (!err)
@@ -395,33 +404,38 @@ static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry,
                new_de = nilfs_find_entry(new_dir, new_dentry, &new_page);
                if (!new_de)
                        goto out_dir;
-               inode_inc_link_count(old_inode);
+               inc_nlink(old_inode);
+               mark_inode_dirty(old_inode);
                nilfs_set_link(new_dir, new_de, new_page, old_inode);
                mark_inode_dirty(new_dir);
                new_inode->i_ctime = CURRENT_TIME;
                if (dir_de)
                        drop_nlink(new_inode);
-               inode_dec_link_count(new_inode);
+               drop_nlink(new_inode);
+               mark_inode_dirty(new_inode);
        } else {
                if (dir_de) {
                        err = -EMLINK;
                        if (new_dir->i_nlink >= NILFS_LINK_MAX)
                                goto out_dir;
                }
-               inode_inc_link_count(old_inode);
+               inc_nlink(old_inode);
+               mark_inode_dirty(old_inode);
                err = nilfs_add_link(new_dentry, old_inode);
                if (err) {
-                       inode_dec_link_count(old_inode);
+                       drop_nlink(old_inode);
+                       mark_inode_dirty(old_inode);
                        goto out_dir;
                }
-               if (dir_de)
-                       inode_inc_link_count(new_dir);
+               if (dir_de) {
+                       inc_nlink(new_dir);
+                       mark_inode_dirty(new_dir);
+               }
        }
 
        /*
         * Like most other Unix systems, set the ctime for inodes on a
         * rename.
-        * inode_dec_link_count() will mark the inode dirty.
         */
        old_inode->i_ctime = CURRENT_TIME;
 
@@ -430,7 +444,8 @@ static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 
        if (dir_de) {
                nilfs_set_link(old_inode, dir_de, dir_page, new_dir);
-               inode_dec_link_count(old_dir);
+               drop_nlink(old_dir);
+               mark_inode_dirty(old_dir);
        }
        mark_inode_dirty(old_inode);