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authorTejun Heo <htejun@gmail.com>2007-08-02 21:38:03 +0900
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 14:51:03 -0700
commit41fc1c27452e041a18e5141b8203ee0ea72bc483 (patch)
treefc81138ca37182c25931818681630c90b018b127 /fs/sysfs/inode.c
parentff869de7bf5e76adffebd3a176c1c73bca7eddb7 (diff)
sysfs: make sysfs_add/remove_one() call link/unlink_sibling() implictly
When adding or removing a sysfs_dirent, the user used to be required to call link/unlink separately. It was for two reasons - code looked like that before sysfs_addrm_cxt conversion and to avoid looping through parent_sd->children list twice during removal. Performance optimization during removal just isn't worth it. Make sysfs_add/remove_one() call sysfs_link/unlink_sibing() implicitly. This makes code simpler albeit slightly less efficient. This change doesn't introduce any noticeable behavior change. Signed-off-by: Tejun Heo <htejun@gmail.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/sysfs/inode.c')
-rw-r--r--fs/sysfs/inode.c17
1 files changed, 4 insertions, 13 deletions
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 45128b79bc6..efb4062fe09 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -189,25 +189,16 @@ void sysfs_instantiate(struct dentry *dentry, struct inode *inode)
int sysfs_hash_and_remove(struct sysfs_dirent *dir_sd, const char *name)
{
struct sysfs_addrm_cxt acxt;
- struct sysfs_dirent **pos, *sd;
+ struct sysfs_dirent *sd;
if (!dir_sd)
return -ENOENT;
sysfs_addrm_start(&acxt, dir_sd);
- for (pos = &dir_sd->s_children; *pos; pos = &(*pos)->s_sibling) {
- sd = *pos;
-
- if (!sysfs_type(sd))
- continue;
- if (!strcmp(sd->s_name, name)) {
- *pos = sd->s_sibling;
- sd->s_sibling = NULL;
- sysfs_remove_one(&acxt, sd);
- break;
- }
- }
+ sd = sysfs_find_dirent(dir_sd, name);
+ if (sd)
+ sysfs_remove_one(&acxt, sd);
if (sysfs_addrm_finish(&acxt))
return 0;