From 608e266a2d4e62c1b98c1c573064b6afe8c06a58 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 14 Jun 2007 04:27:22 +0900 Subject: sysfs: make kobj point to sysfs_dirent instead of dentry As kobj sysfs dentries and inodes are gonna be made reclaimable, dentry can't be used as naming token for sysfs file/directory, replace kobj->dentry with kobj->sd. The only external interface change is shadow directory handling. All other changes are contained in kobj and sysfs. Signed-off-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman --- fs/sysfs/file.c | 47 ++++++++++++++++++++++++----------------------- 1 file changed, 24 insertions(+), 23 deletions(-) (limited to 'fs/sysfs/file.c') diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index e448b88e313..20703b9ee06 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -385,7 +385,7 @@ static struct dentry *step_down(struct dentry *dir, const char * name) void sysfs_notify(struct kobject * k, char *dir, char *attr) { - struct dentry *de = k->dentry; + struct dentry *de = k->sd->s_dentry; if (de) dget(de); if (de && dir) @@ -412,16 +412,17 @@ const struct file_operations sysfs_file_operations = { }; -int sysfs_add_file(struct dentry * dir, const struct attribute * attr, int type) +int sysfs_add_file(struct sysfs_dirent *dir_sd, const struct attribute *attr, + int type) { - struct sysfs_dirent * parent_sd = dir->d_fsdata; + struct dentry *dir = dir_sd->s_dentry; umode_t mode = (attr->mode & S_IALLUGO) | S_IFREG; struct sysfs_dirent *sd; int error = 0; mutex_lock(&dir->d_inode->i_mutex); - if (sysfs_find_dirent(parent_sd, attr->name)) { + if (sysfs_find_dirent(dir_sd, attr->name)) { error = -EEXIST; goto out_unlock; } @@ -432,7 +433,7 @@ int sysfs_add_file(struct dentry * dir, const struct attribute * attr, int type) goto out_unlock; } sd->s_elem.attr.attr = (void *)attr; - sysfs_attach_dirent(sd, parent_sd, NULL); + sysfs_attach_dirent(sd, dir_sd, NULL); out_unlock: mutex_unlock(&dir->d_inode->i_mutex); @@ -448,9 +449,9 @@ int sysfs_add_file(struct dentry * dir, const struct attribute * attr, int type) int sysfs_create_file(struct kobject * kobj, const struct attribute * attr) { - BUG_ON(!kobj || !kobj->dentry || !attr); + BUG_ON(!kobj || !kobj->sd || !attr); - return sysfs_add_file(kobj->dentry, attr, SYSFS_KOBJ_ATTR); + return sysfs_add_file(kobj->sd, attr, SYSFS_KOBJ_ATTR); } @@ -464,16 +465,16 @@ int sysfs_create_file(struct kobject * kobj, const struct attribute * attr) int sysfs_add_file_to_group(struct kobject *kobj, const struct attribute *attr, const char *group) { - struct dentry *dir; + struct sysfs_dirent *dir_sd; int error; - dir = lookup_one_len(group, kobj->dentry, strlen(group)); - if (IS_ERR(dir)) - error = PTR_ERR(dir); - else { - error = sysfs_add_file(dir, attr, SYSFS_KOBJ_ATTR); - dput(dir); - } + dir_sd = sysfs_get_dirent(kobj->sd, group); + if (!dir_sd) + return -ENOENT; + + error = sysfs_add_file(dir_sd, attr, SYSFS_KOBJ_ATTR); + sysfs_put(dir_sd); + return error; } EXPORT_SYMBOL_GPL(sysfs_add_file_to_group); @@ -486,7 +487,7 @@ EXPORT_SYMBOL_GPL(sysfs_add_file_to_group); */ int sysfs_update_file(struct kobject * kobj, const struct attribute * attr) { - struct dentry * dir = kobj->dentry; + struct dentry *dir = kobj->sd->s_dentry; struct dentry * victim; int res = -ENOENT; @@ -522,7 +523,7 @@ int sysfs_update_file(struct kobject * kobj, const struct attribute * attr) */ int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode) { - struct dentry *dir = kobj->dentry; + struct dentry *dir = kobj->sd->s_dentry; struct dentry *victim; struct inode * inode; struct iattr newattrs; @@ -560,7 +561,7 @@ EXPORT_SYMBOL_GPL(sysfs_chmod_file); void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr) { - sysfs_hash_and_remove(kobj->dentry, attr->name); + sysfs_hash_and_remove(kobj->sd, attr->name); } @@ -573,12 +574,12 @@ void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr) void sysfs_remove_file_from_group(struct kobject *kobj, const struct attribute *attr, const char *group) { - struct dentry *dir; + struct sysfs_dirent *dir_sd; - dir = lookup_one_len(group, kobj->dentry, strlen(group)); - if (!IS_ERR(dir)) { - sysfs_hash_and_remove(dir, attr->name); - dput(dir); + dir_sd = sysfs_get_dirent(kobj->sd, group); + if (dir_sd) { + sysfs_hash_and_remove(dir_sd, attr->name); + sysfs_put(dir_sd); } } EXPORT_SYMBOL_GPL(sysfs_remove_file_from_group); -- cgit v1.2.3