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UBI: factorize destroy_av() and ubi_remove_av() code 

Those functions are pretty much doing the same thing, except
ubi_remove_av() is putting the aeb elements attached to the volume into
the ai->erase list and the destroy_av() is freeing them.

Rework destroy_av() to handle both cases.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Boris Brezillon 2016-09-16 16:59:15 +02:00 committed by Richard Weinberger
parent de4c455b3e
commit f9efe8d8a5
1 changed files with 12 additions and 13 deletions
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25
drivers/mtd/ubi/attach.c
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@ -722,6 +722,9 @@ struct ubi_ainf_volume *ubi_find_av(const struct ubi_attach_info *ai,
&created);
}
static void destroy_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av,
struct list_head *list);
/**
* ubi_remove_av - delete attaching information about a volume.
* @ai: attaching information
@ -729,19 +732,10 @@ struct ubi_ainf_volume *ubi_find_av(const struct ubi_attach_info *ai,
*/
void ubi_remove_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av)
{
struct rb_node *rb;
struct ubi_ainf_peb *aeb;
dbg_bld("remove attaching information about volume %d", av->vol_id);
while ((rb = rb_first(&av->root))) {
aeb = rb_entry(rb, struct ubi_ainf_peb, u.rb);
rb_erase(&aeb->u.rb, &av->root);
list_add_tail(&aeb->u.list, &ai->erase);
}
rb_erase(&av->rb, &ai->volumes);
kfree(av);
destroy_av(ai, av, &ai->erase);
ai->vols_found -= 1;
}
@ -1256,10 +1250,12 @@ static int late_analysis(struct ubi_device *ubi, struct ubi_attach_info *ai)
* destroy_av - free volume attaching information.
* @av: volume attaching information
* @ai: attaching information
* @list: put the aeb elements in there if !NULL, otherwise free them
*
* This function destroys the volume attaching information.
*/
static void destroy_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av)
static void destroy_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av,
struct list_head *list)
{
struct ubi_ainf_peb *aeb;
struct rb_node *this = av->root.rb_node;
@ -1279,7 +1275,10 @@ static void destroy_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av)
this->rb_right = NULL;
}
kmem_cache_free(ai->aeb_slab_cache, aeb);
if (list)
list_add_tail(&aeb->u.list, list);
else
kmem_cache_free(ai->aeb_slab_cache, aeb);
}
}
kfree(av);
@ -1334,7 +1333,7 @@ static void destroy_ai(struct ubi_attach_info *ai)
rb->rb_right = NULL;
}
destroy_av(ai, av);
destroy_av(ai, av, NULL);
}
}