Commit 3594eb28 authored by Tejun Heo's avatar Tejun Heo Committed by Linus Torvalds

idr: refactor idr_get_new_above()

Move slot filling to idr_fill_slot() from idr_get_new_above_int() and
make idr_get_new_above() directly call it.  idr_get_new_above_int() is
no longer needed and removed.

This will be used to implement a new ID allocation interface.
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 12d1b439
......@@ -278,24 +278,15 @@ static int idr_get_empty_slot(struct idr *idp, int starting_id,
return(v);
}
static int idr_get_new_above_int(struct idr *idp, void *ptr, int starting_id)
{
struct idr_layer *pa[MAX_IDR_LEVEL];
int id;
id = idr_get_empty_slot(idp, starting_id, pa);
if (id >= 0) {
/*
* Successfully found an empty slot. Install the user
* pointer and mark the slot full.
/*
* @id and @pa are from a successful allocation from idr_get_empty_slot().
* Install the user pointer @ptr and mark the slot full.
*/
rcu_assign_pointer(pa[0]->ary[id & IDR_MASK],
(struct idr_layer *)ptr);
static void idr_fill_slot(void *ptr, int id, struct idr_layer **pa)
{
rcu_assign_pointer(pa[0]->ary[id & IDR_MASK], (struct idr_layer *)ptr);
pa[0]->count++;
idr_mark_full(pa, id);
}
return id;
}
/**
......@@ -318,11 +309,14 @@ static int idr_get_new_above_int(struct idr *idp, void *ptr, int starting_id)
*/
int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id)
{
struct idr_layer *pa[MAX_IDR_LEVEL];
int rv;
rv = idr_get_new_above_int(idp, ptr, starting_id);
rv = idr_get_empty_slot(idp, starting_id, pa);
if (rv < 0)
return rv == -ENOMEM ? -EAGAIN : rv;
idr_fill_slot(ptr, rv, pa);
*id = rv;
return 0;
}
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment