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comments: misc updates
Miscellaneous clarifications to comments.
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@ -86,9 +86,9 @@ devices {
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# It is safe to delete the contents: the tools regenerate it.
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# (The old setting 'cache' is still respected if neither of
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# these new ones is present.)
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# N.B. This type of caching is obsolete and existing .cache
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# file is removed if the list of devices is obtained from
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# udev by setting the obtain_device_list_from_udev to 1.
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# N.B. If obtain_device_list_from_udev is set to 1 the list of
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# devices is instead obtained from udev and any existing .cache
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# file is removed.
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cache_dir = "@DEFAULT_SYS_DIR@/@DEFAULT_CACHE_SUBDIR@"
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cache_file_prefix = ""
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@ -131,6 +131,7 @@ static void _allocate_memory(void)
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((_size_stack * 2) < limit.rlim_cur) &&
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((stack_mem = alloca(_size_stack))))
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_touch_memory(stack_mem, _size_stack);
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/* FIXME else warn user setting got ignored */
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if ((temp_malloc_mem = malloc(_size_malloc_tmp)))
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_touch_memory(temp_malloc_mem, _size_malloc_tmp);
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@ -650,8 +650,8 @@ typedef enum {
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DM_THIN_MESSAGE_CREATE_THIN, /* device_id */
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DM_THIN_MESSAGE_DELETE, /* device_id */
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DM_THIN_MESSAGE_SET_TRANSACTION_ID, /* current_id, new_id */
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DM_THIN_MESSAGE_RESERVE_METADATA_SNAP, /* 1.1 */
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DM_THIN_MESSAGE_RELEASE_METADATA_SNAP, /* 1.1 */
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DM_THIN_MESSAGE_RESERVE_METADATA_SNAP, /* target version >= 1.1 */
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DM_THIN_MESSAGE_RELEASE_METADATA_SNAP, /* target version >= 1.1 */
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} dm_thin_message_t;
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int dm_tree_node_add_thin_pool_message(struct dm_tree_node *node,
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@ -663,7 +663,7 @@ int dm_tree_node_add_thin_pool_message(struct dm_tree_node *node,
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* ignore - Disable discard support
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* no_passdown - Don't pass discard down to underlaying data device,
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* just remove the mapping
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* Feature is available for 1.1
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* Feature is available since version 1.1 of the thin target.
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*/
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int dm_tree_node_set_thin_pool_discard(struct dm_tree_node *node,
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unsigned ignore,
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@ -192,8 +192,8 @@ struct load_segment {
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uint64_t low_water_mark; /* Thin_pool */
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uint32_t data_block_size; /* Thin_pool */
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unsigned skip_block_zeroing; /* Thin_pool */
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unsigned ignore_discard; /* Thin_pool 1.1 */
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unsigned no_discard_passdown; /* Thin_pool 1.1 */
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unsigned ignore_discard; /* Thin_pool target vsn 1.1 */
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unsigned no_discard_passdown; /* Thin_pool target vsn 1.1 */
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uint32_t device_id; /* Thin */
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};
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@ -1411,10 +1411,10 @@ static int _thin_pool_node_message(struct dm_tree_node *dnode, struct thin_messa
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m->u.m_set_transaction_id.current_id,
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m->u.m_set_transaction_id.new_id);
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break;
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case DM_THIN_MESSAGE_RESERVE_METADATA_SNAP: /* 1.1 */
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case DM_THIN_MESSAGE_RESERVE_METADATA_SNAP: /* target vsn 1.1 */
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r = dm_snprintf(buf, sizeof(buf), "reserve_metadata_snap");
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break;
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case DM_THIN_MESSAGE_RELEASE_METADATA_SNAP: /* 1.1 */
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case DM_THIN_MESSAGE_RELEASE_METADATA_SNAP: /* target vsn 1.1 */
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r = dm_snprintf(buf, sizeof(buf), "release_metadata_snap");
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break;
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default:
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