static int lock_all_bitmaps(struct mddev *mddev)
{
int slot, my_slot, ret, held = 1, i = 0;
char str[64];
struct md_cluster_info *cinfo = mddev->cluster_info;
cinfo->other_bitmap_lockres = kzalloc((mddev->bitmap_info.nodes - 1) *
sizeof(struct dlm_lock_resource *),
GFP_KERNEL);
if (!cinfo->other_bitmap_lockres) {
pr_err("md: can't alloc mem for other bitmap locks\n");
return 0;
}
my_slot = slot_number(mddev);
for (slot = 0; slot < mddev->bitmap_info.nodes; slot++) {
if (slot == my_slot)
continue;
memset(str, '\0', 64);
snprintf(str, 64, "bitmap%04d", slot);
cinfo->other_bitmap_lockres[i] = lockres_init(mddev, str, NULL, 1);
if (!cinfo->other_bitmap_lockres[i])
return -ENOMEM;
cinfo->other_bitmap_lockres[i]->flags |= DLM_LKF_NOQUEUE;
ret = dlm_lock_sync(cinfo->other_bitmap_lockres[i], DLM_LOCK_PW);
if (ret)
held = -1;
i++;
}
return held;
}
inline constexpr slot_number to_slot_number(h_subframe_tuple )
{
return slot_number(0);
}
