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UBI: factorize code used to manipulate volumes at attach time

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Volume creation/search code is duplicated in a few places (fastmap and
non fastmap code). Create some helpers to factorize the code.

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 16:59:14 +02:00
committed by Richard Weinberger
parent 5f09aaa9b3
commit de4c455b3e
3 changed files with 112 additions and 67 deletions
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27
drivers/mtd/ubi/fastmap.c
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@@ -186,40 +186,19 @@ static struct ubi_ainf_volume *add_vol(struct ubi_attach_info *ai, int vol_id,
int last_eb_bytes)
{
struct ubi_ainf_volume *av;
struct rb_node **p = &ai->volumes.rb_node, *parent = NULL;
while (*p) {
parent = *p;
av = rb_entry(parent, struct ubi_ainf_volume, rb);
av = ubi_add_av(ai, vol_id);
if (IS_ERR(av))
return av;
if (vol_id > av->vol_id)
p = &(*p)->rb_left;
else if (vol_id < av->vol_id)
p = &(*p)->rb_right;
else
return ERR_PTR(-EINVAL);
}
av = kmalloc(sizeof(struct ubi_ainf_volume), GFP_KERNEL);
if (!av)
goto out;
av->highest_lnum = av->leb_count = av->used_ebs = 0;
av->vol_id = vol_id;
av->data_pad = data_pad;
av->last_data_size = last_eb_bytes;
av->compat = 0;
av->vol_type = vol_type;
av->root = RB_ROOT;
if (av->vol_type == UBI_STATIC_VOLUME)
av->used_ebs = used_ebs;
dbg_bld("found volume (ID %i)", vol_id);
rb_link_node(&av->rb, parent, p);
rb_insert_color(&av->rb, &ai->volumes);
out:
return av;
}