diff options
| author | Christoph Hellwig <hch@lst.de> | 2016-02-26 11:02:14 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2016-03-06 16:11:24 +0100 |
| commit | 1ae1602de028acaa42a0f6ff18d19756f8e825c6 (patch) | |
| tree | 3370e5c29945370f62b9c72adeec587ed102d048 /fs/configfs/dir.c | |
| parent | configfs: Replace CURRENT_TIME by current_fs_time() (diff) | |
| download | linux-1ae1602de028acaa42a0f6ff18d19756f8e825c6.tar.xz linux-1ae1602de028acaa42a0f6ff18d19756f8e825c6.zip | |
configfs: switch ->default groups to a linked list
Replace the current NULL-terminated array of default groups with a linked
list. This gets rid of lots of nasty code to size and/or dynamically
allocate the array.
While we're at it also provide a conveniant helper to remove the default
groups.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Felipe Balbi <balbi@kernel.org> [drivers/usb/gadget]
Acked-by: Joel Becker <jlbec@evilplan.org>
Acked-by: Nicholas Bellinger <nab@linux-iscsi.org>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Diffstat (limited to 'fs/configfs/dir.c')
| -rw-r--r-- | fs/configfs/dir.c | 44 |
1 files changed, 20 insertions, 24 deletions
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c index f419519ec41f..b51ce6778145 100644 --- a/fs/configfs/dir.c +++ b/fs/configfs/dir.c @@ -701,23 +701,29 @@ static int populate_groups(struct config_group *group) { struct config_group *new_group; int ret = 0; - int i; - - if (group->default_groups) { - for (i = 0; group->default_groups[i]; i++) { - new_group = group->default_groups[i]; - ret = create_default_group(group, new_group); - if (ret) { - detach_groups(group); - break; - } + list_for_each_entry(new_group, &group->default_groups, group_entry) { + ret = create_default_group(group, new_group); + if (ret) { + detach_groups(group); + break; } } return ret; } +void configfs_remove_default_groups(struct config_group *group) +{ + struct config_group *g, *n; + + list_for_each_entry_safe(g, n, &group->default_groups, group_entry) { + list_del(&g->group_entry); + config_item_put(&g->cg_item); + } +} +EXPORT_SYMBOL(configfs_remove_default_groups); + /* * All of link_obj/unlink_obj/link_group/unlink_group require that * subsys->su_mutex is held. @@ -766,15 +772,10 @@ static void link_obj(struct config_item *parent_item, struct config_item *item) static void unlink_group(struct config_group *group) { - int i; struct config_group *new_group; - if (group->default_groups) { - for (i = 0; group->default_groups[i]; i++) { - new_group = group->default_groups[i]; - unlink_group(new_group); - } - } + list_for_each_entry(new_group, &group->default_groups, group_entry) + unlink_group(new_group); group->cg_subsys = NULL; unlink_obj(&group->cg_item); @@ -782,7 +783,6 @@ static void unlink_group(struct config_group *group) static void link_group(struct config_group *parent_group, struct config_group *group) { - int i; struct config_group *new_group; struct configfs_subsystem *subsys = NULL; /* gcc is a turd */ @@ -796,12 +796,8 @@ static void link_group(struct config_group *parent_group, struct config_group *g BUG(); group->cg_subsys = subsys; - if (group->default_groups) { - for (i = 0; group->default_groups[i]; i++) { - new_group = group->default_groups[i]; - link_group(group, new_group); - } - } + list_for_each_entry(new_group, &group->default_groups, group_entry) + link_group(group, new_group); } /* |