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authorTejun Heo <htejun@gmail.com>2007-06-14 03:45:15 +0900
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-11 16:09:04 -0700
commit3e5190380ebef77f2b015c9e7a4ca225a3d75021 (patch)
tree08d17cd0562acf5101063e93c649f5f71f80b3b9 /fs/sysfs/symlink.c
parent0c096b507f15397da890051ee73de4266d3941fb (diff)
sysfs: make sysfs_dirent->s_element a union
Make sd->s_element a union of sysfs_elem_{dir|symlink|attr|bin_attr} and rename it to s_elem. This is to achieve... * some level of type checking : changing symlink to point to sysfs_dirent instead of kobject is much safer and less painful now. * easier / standardized dereferencing * allow sysfs_elem_* to contain more than one entry Where possible, pointer is obtained by directly deferencing from sd instead of going through other entities. This reduces dependencies to dentry, inode and kobject. to_attr() and to_bin_attr() are unused now and removed. This is in preparation of object reference simplification. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/sysfs/symlink.c')
-rw-r--r--fs/sysfs/symlink.c23
1 files changed, 4 insertions, 19 deletions
diff --git a/fs/sysfs/symlink.c b/fs/sysfs/symlink.c
index c72820450e7..27df635b786 100644
--- a/fs/sysfs/symlink.c
+++ b/fs/sysfs/symlink.c
@@ -48,30 +48,15 @@ static void fill_object_path(struct kobject * kobj, char * buffer, int length)
static int sysfs_add_link(struct dentry * parent, const char * name, struct kobject * target)
{
struct sysfs_dirent * parent_sd = parent->d_fsdata;
- struct sysfs_symlink * sl;
struct sysfs_dirent * sd;
- int error;
- error = -ENOMEM;
- sl = kzalloc(sizeof(*sl), GFP_KERNEL);
- if (!sl)
- goto err_out;
-
- sl->target_kobj = kobject_get(target);
-
- sd = sysfs_new_dirent(name, sl, S_IFLNK|S_IRWXUGO, SYSFS_KOBJ_LINK);
+ sd = sysfs_new_dirent(name, S_IFLNK|S_IRWXUGO, SYSFS_KOBJ_LINK);
if (!sd)
- goto err_out;
- sysfs_attach_dirent(sd, parent_sd, NULL);
+ return -ENOMEM;
+ sd->s_elem.symlink.target_kobj = kobject_get(target);
+ sysfs_attach_dirent(sd, parent_sd, NULL);
return 0;
-
- err_out:
- if (sl) {
- kobject_put(sl->target_kobj);
- kfree(sl);
- }
- return error;
}
/**