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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>
This commit is contained in:
Jiro SEKIBA 2009-11-27 19:41:08 +09:00 committed by Ryusuke Konishi
parent 43f8bc262f
commit 565de406e7
1 changed files with 32 additions and 17 deletions
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49
fs/nilfs2/namei.c
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@ -200,7 +200,8 @@ static int nilfs_symlink(struct inode *dir, struct dentry *dentry,
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 @@ static int nilfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
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);