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ipc: simplify ipc initialization

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Now that we know that rhashtable_init() will not fail, we can get rid of a
lot of the unnecessary cleanup paths when the call errored out.

[[email protected]: variable name added to util.h to resolve checkpatch warning]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Davidlohr Bueso <[email protected]>
Signed-off-by: Manfred Spraul <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Herbert Xu <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Michael Kerrisk <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Davidlohr Bueso 2018-08-21 22:01:56 -07:00 • committed by Linus Torvalds
commit eae04d25a7
6 changed files with 30 additions and 54 deletions
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18
ipc/util.c
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@ -88,16 +88,12 @@ struct ipc_proc_iface {
*/
static int __init ipc_init(void)
{
int err_sem, err_msg;
proc_mkdir("sysvipc", NULL);
err_sem = sem_init();
WARN(err_sem, "ipc: sysv sem_init failed: %d\n", err_sem);
err_msg = msg_init();
WARN(err_msg, "ipc: sysv msg_init failed: %d\n", err_msg);
sem_init();
msg_init();
shm_init();
return err_msg ? err_msg : err_sem;
return 0;
}
device_initcall(ipc_init);
@ -116,21 +112,17 @@ static const struct rhashtable_params ipc_kht_params = {
* Set up the sequence range to use for the ipc identifier range (limited
* below IPCMNI) then initialise the keys hashtable and ids idr.
*/
int ipc_init_ids(struct ipc_ids *ids)
void ipc_init_ids(struct ipc_ids *ids)
{
int err;
ids->in_use = 0;
ids->seq = 0;
init_rwsem(&ids->rwsem);
err = rhashtable_init(&ids->key_ht, &ipc_kht_params);
if (err)
return err;
rhashtable_init(&ids->key_ht, &ipc_kht_params);
idr_init(&ids->ipcs_idr);
ids->max_id = -1;
#ifdef CONFIG_CHECKPOINT_RESTORE
ids->next_id = -1;
#endif
return 0;
}
#ifdef CONFIG_PROC_FS