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| author | Tejun Heo <htejun@gmail.com> | 2007-08-02 21:38:03 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-10-12 14:51:03 -0700 |
| commit | 41fc1c27452e041a18e5141b8203ee0ea72bc483 (patch) | |
| tree | fc81138ca37182c25931818681630c90b018b127 /fs/sysfs/inode.c | |
| parent | ff869de7bf5e76adffebd3a176c1c73bca7eddb7 (diff) | |
| download | blackbird-op-linux-41fc1c27452e041a18e5141b8203ee0ea72bc483.tar.gz blackbird-op-linux-41fc1c27452e041a18e5141b8203ee0ea72bc483.zip | |
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.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c index 45128b79bc68..efb4062fe099 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; |
