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label: use dev iterator directly

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Avoid preparing 'extra' dm_list with devices, and just
use the iterator result directly.
This commit is contained in:
Zdenek Kabelac 2024-06-19 14:19:52 +02:00
parent cc344c3e69
commit 88fb07b669
1 changed files with 7 additions and 20 deletions
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27
lib/label/label.c
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@ -875,7 +875,6 @@ int label_scan_for_pvid(struct cmd_context *cmd, char *pvid, struct device **dev
char buf[LABEL_SIZE] __attribute__((aligned(8)));
struct dm_list devs;
struct dev_iter *iter;
struct device_list *devl, *devl2;
struct device *dev;
struct pv_header *pvh;
int ret = 0;
@ -891,6 +890,9 @@ int label_scan_for_pvid(struct cmd_context *cmd, char *pvid, struct device **dev
return 0;
}
if (!label_scan_setup_bcache())
return_0;
/*
* Iterating over all available devices with cmd->filter filters
* devices; those returned from dev_iter_get are the devs that
@ -902,23 +904,10 @@ int label_scan_for_pvid(struct cmd_context *cmd, char *pvid, struct device **dev
return 0;
}
log_debug_devs("Filtering devices to scan");
while ((dev = dev_iter_get(cmd, iter))) {
if (!(devl = zalloc(sizeof(*devl))))
continue;
devl->dev = dev;
dm_list_add(&devs, &devl->list);
};
dev_iter_destroy(iter);
if (!label_scan_setup_bcache())
goto_out;
log_debug_devs("Reading labels for pvid");
dm_list_iterate_items(devl, &devs) {
dev = devl->dev;
while ((dev = dev_iter_get(cmd, iter))) {
memset(buf, 0, sizeof(buf));
@ -933,7 +922,7 @@ int label_scan_for_pvid(struct cmd_context *cmd, char *pvid, struct device **dev
pvh = (struct pv_header *)(buf + 32);
if (!memcmp(pvh->pv_uuid, pvid, ID_LEN)) {
*dev_out = devl->dev;
*dev_out = dev;
_scan_dev_close(dev);
break;
}
@ -942,10 +931,8 @@ int label_scan_for_pvid(struct cmd_context *cmd, char *pvid, struct device **dev
}
ret = 1;
out:
dm_list_iterate_items_safe(devl, devl2, &devs) {
dm_list_del(&devl->list);
free(devl);
}
dev_iter_destroy(iter);
return ret;
}