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-rw-r--r--fs/sysfs/inode.c24
1 files changed, 15 insertions, 9 deletions
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 26d8503c8997..3eab9c46a71b 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -153,10 +153,12 @@ void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode)
}
/**
- * sysfs_new_inode - allocate new inode for sysfs_dirent
+ * sysfs_get_inode - get inode for sysfs_dirent
* @sd: sysfs_dirent to allocate inode for
*
- * Allocate inode for @sd and initialize basics.
+ * Get inode for @sd. If such inode doesn't exist, a new inode
+ * is allocated and basics are initialized. New inode is
+ * returned locked.
*
* LOCKING:
* Kernel thread context (may sleep).
@@ -164,12 +166,12 @@ void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode)
* RETURNS:
* Pointer to allocated inode on success, NULL on failure.
*/
-struct inode * sysfs_new_inode(struct sysfs_dirent *sd)
+struct inode * sysfs_get_inode(struct sysfs_dirent *sd)
{
struct inode *inode;
- inode = new_inode(sysfs_sb);
- if (inode)
+ inode = iget_locked(sysfs_sb, sd->s_ino);
+ if (inode && (inode->i_state & I_NEW))
sysfs_init_inode(sd, inode);
return inode;
@@ -180,7 +182,7 @@ struct inode * sysfs_new_inode(struct sysfs_dirent *sd)
* @dentry: dentry to be instantiated
* @inode: inode associated with @sd
*
- * Instantiate @dentry with @inode.
+ * Unlock @inode if locked and instantiate @dentry with @inode.
*
* LOCKING:
* None.
@@ -189,9 +191,13 @@ void sysfs_instantiate(struct dentry *dentry, struct inode *inode)
{
BUG_ON(!dentry || dentry->d_inode);
- if (dentry->d_parent && dentry->d_parent->d_inode) {
- struct inode *p_inode = dentry->d_parent->d_inode;
- p_inode->i_mtime = p_inode->i_ctime = CURRENT_TIME;
+ if (inode->i_state & I_NEW) {
+ unlock_new_inode(inode);
+
+ if (dentry->d_parent && dentry->d_parent->d_inode) {
+ struct inode *p_inode = dentry->d_parent->d_inode;
+ p_inode->i_mtime = p_inode->i_ctime = CURRENT_TIME;
+ }
}
d_instantiate(dentry, inode);