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sysfs: Move all of inode initialization into sysfs_init_inode 

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Eric W. Biederman 2007-08-20 21:36:29 +09:00 committed by Greg Kroah-Hartman
parent 253280267a
commit 372e88bd19
3 changed files with 45 additions and 45 deletions
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37
fs/sysfs/dir.c
View File

@ -748,24 +748,12 @@ int sysfs_create_dir(struct kobject * kobj)
return error;
}
static int sysfs_count_nlink(struct sysfs_dirent *sd)
{
struct sysfs_dirent *child;
int nr = 0;
for (child = sd->s_children; child; child = child->s_sibling)
if (sysfs_type(child) == SYSFS_DIR)
nr++;
return nr + 2;
}
static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
struct nameidata *nd)
{
struct dentry *ret = NULL;
struct sysfs_dirent *parent_sd = dentry->d_parent->d_fsdata;
struct sysfs_dirent *sd;
struct bin_attribute *bin_attr;
struct inode *inode;
mutex_lock(&sysfs_mutex);
@ -785,31 +773,6 @@ static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
goto out_unlock;
}
if (inode->i_state & I_NEW) {
/* initialize inode according to type */
switch (sysfs_type(sd)) {
case SYSFS_DIR:
inode->i_op = &sysfs_dir_inode_operations;
inode->i_fop = &sysfs_dir_operations;
inode->i_nlink = sysfs_count_nlink(sd);
break;
case SYSFS_KOBJ_ATTR:
inode->i_size = PAGE_SIZE;
inode->i_fop = &sysfs_file_operations;
break;
case SYSFS_KOBJ_BIN_ATTR:
bin_attr = sd->s_elem.bin_attr.bin_attr;
inode->i_size = bin_attr->size;
inode->i_fop = &bin_fops;
break;
case SYSFS_KOBJ_LINK:
inode->i_op = &sysfs_symlink_inode_operations;
break;
default:
BUG();
}
}
sysfs_instantiate(dentry, inode);
sysfs_attach_dentry(sd, dentry);

48
fs/sysfs/inode.c
View File

@ -122,8 +122,22 @@ static inline void set_inode_attr(struct inode * inode, struct iattr * iattr)
*/
static struct lock_class_key sysfs_inode_imutex_key;
static int sysfs_count_nlink(struct sysfs_dirent *sd)
{
struct sysfs_dirent *child;
int nr = 0;
for (child = sd->s_children; child; child = child->s_sibling)
if (sysfs_type(child) == SYSFS_DIR)
nr++;
return nr + 2;
}
static void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode)
{
struct bin_attribute *bin_attr;
inode->i_blocks = 0;
inode->i_mapping->a_ops = &sysfs_aops;
inode->i_mapping->backing_dev_info = &sysfs_backing_dev_info;
@ -139,6 +153,37 @@ static void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode)
set_inode_attr(inode, sd->s_iattr);
} else
set_default_inode_attr(inode, sd->s_mode);
/* initialize inode according to type */
switch (sysfs_type(sd)) {
case SYSFS_ROOT:
inode->i_op = &sysfs_dir_inode_operations;
inode->i_fop = &sysfs_dir_operations;
inc_nlink(inode); /* directory, account for "." */
break;
case SYSFS_DIR:
inode->i_op = &sysfs_dir_inode_operations;
inode->i_fop = &sysfs_dir_operations;
inode->i_nlink = sysfs_count_nlink(sd);
break;
case SYSFS_KOBJ_ATTR:
inode->i_size = PAGE_SIZE;
inode->i_fop = &sysfs_file_operations;
break;
case SYSFS_KOBJ_BIN_ATTR:
bin_attr = sd->s_elem.bin_attr.bin_attr;
inode->i_size = bin_attr->size;
inode->i_fop = &bin_fops;
break;
case SYSFS_KOBJ_LINK:
inode->i_op = &sysfs_symlink_inode_operations;
break;
default:
BUG();
}
unlock_new_inode(inode);
}
/**
@ -180,9 +225,6 @@ void sysfs_instantiate(struct dentry *dentry, struct inode *inode)
{
BUG_ON(!dentry || dentry->d_inode);
if (inode->i_state & I_NEW)
unlock_new_inode(inode);
d_instantiate(dentry, inode);
}

5
fs/sysfs/mount.c
View File

@ -49,11 +49,6 @@ static int sysfs_fill_super(struct super_block *sb, void *data, int silent)
return -ENOMEM;
}
inode->i_op = &sysfs_dir_inode_operations;
inode->i_fop = &sysfs_dir_operations;
inc_nlink(inode); /* directory, account for "." */
unlock_new_inode(inode);
/* instantiate and link root dentry */
root = d_alloc_root(inode);
if (!root) {