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Diffstat (limited to 'fs/sysfs/inode.c')
-rw-r--r--fs/sysfs/inode.c48
1 files changed, 45 insertions, 3 deletions
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index e22db6cd4df..200e1bf6f93 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -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);
}