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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-22 17:01:14 +00:00
dm table: replace while loops with for loops
Also remove some unnecessary use of uninitialized_var(). Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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parent
cc7e394024
commit
3c12016910
1 changed files with 32 additions and 31 deletions
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@ -373,7 +373,7 @@ static int upgrade_mode(struct dm_dev_internal *dd, fmode_t new_mode,
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*/
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dev_t dm_get_dev_t(const char *path)
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{
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dev_t uninitialized_var(dev);
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dev_t dev;
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struct block_device *bdev;
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bdev = lookup_bdev(path);
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@ -627,13 +627,13 @@ static int validate_hardware_logical_block_alignment(struct dm_table *table,
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struct dm_target *uninitialized_var(ti);
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struct queue_limits ti_limits;
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unsigned i = 0;
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unsigned i;
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/*
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* Check each entry in the table in turn.
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*/
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while (i < dm_table_get_num_targets(table)) {
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ti = dm_table_get_target(table, i++);
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for (i = 0; i < dm_table_get_num_targets(table); i++) {
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ti = dm_table_get_target(table, i);
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blk_set_stacking_limits(&ti_limits);
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@ -854,11 +854,11 @@ static int device_supports_dax(struct dm_target *ti, struct dm_dev *dev,
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static bool dm_table_supports_dax(struct dm_table *t)
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{
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struct dm_target *ti;
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unsigned i = 0;
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unsigned i;
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/* Ensure that all targets support DAX. */
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while (i < dm_table_get_num_targets(t)) {
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ti = dm_table_get_target(t, i++);
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for (i = 0; i < dm_table_get_num_targets(t); i++) {
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ti = dm_table_get_target(t, i);
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if (!ti->type->direct_access)
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return false;
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@ -1010,11 +1010,11 @@ struct dm_target *dm_table_get_immutable_target(struct dm_table *t)
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struct dm_target *dm_table_get_wildcard_target(struct dm_table *t)
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{
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struct dm_target *uninitialized_var(ti);
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unsigned i = 0;
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struct dm_target *ti;
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unsigned i;
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while (i < dm_table_get_num_targets(t)) {
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ti = dm_table_get_target(t, i++);
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for (i = 0; i < dm_table_get_num_targets(t); i++) {
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ti = dm_table_get_target(t, i);
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if (dm_target_is_wildcard(ti->type))
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return ti;
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}
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@ -1321,15 +1321,16 @@ static int count_device(struct dm_target *ti, struct dm_dev *dev,
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*/
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bool dm_table_has_no_data_devices(struct dm_table *table)
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{
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struct dm_target *uninitialized_var(ti);
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unsigned i = 0, num_devices = 0;
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struct dm_target *ti;
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unsigned i, num_devices;
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while (i < dm_table_get_num_targets(table)) {
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ti = dm_table_get_target(table, i++);
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for (i = 0; i < dm_table_get_num_targets(table); i++) {
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ti = dm_table_get_target(table, i);
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if (!ti->type->iterate_devices)
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return false;
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num_devices = 0;
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ti->type->iterate_devices(ti, count_device, &num_devices);
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if (num_devices)
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return false;
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@ -1344,16 +1345,16 @@ bool dm_table_has_no_data_devices(struct dm_table *table)
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int dm_calculate_queue_limits(struct dm_table *table,
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struct queue_limits *limits)
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{
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struct dm_target *uninitialized_var(ti);
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struct dm_target *ti;
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struct queue_limits ti_limits;
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unsigned i = 0;
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unsigned i;
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blk_set_stacking_limits(limits);
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while (i < dm_table_get_num_targets(table)) {
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for (i = 0; i < dm_table_get_num_targets(table); i++) {
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blk_set_stacking_limits(&ti_limits);
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ti = dm_table_get_target(table, i++);
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ti = dm_table_get_target(table, i);
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if (!ti->type->iterate_devices)
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goto combine_limits;
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@ -1435,7 +1436,7 @@ static int device_flush_capable(struct dm_target *ti, struct dm_dev *dev,
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static bool dm_table_supports_flush(struct dm_table *t, unsigned long flush)
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{
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struct dm_target *ti;
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unsigned i = 0;
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unsigned i;
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/*
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* Require at least one underlying device to support flushes.
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@ -1443,8 +1444,8 @@ static bool dm_table_supports_flush(struct dm_table *t, unsigned long flush)
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* so we need to use iterate_devices here, which targets
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* supporting flushes must provide.
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*/
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while (i < dm_table_get_num_targets(t)) {
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ti = dm_table_get_target(t, i++);
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for (i = 0; i < dm_table_get_num_targets(t); i++) {
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ti = dm_table_get_target(t, i);
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if (!ti->num_flush_bios)
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continue;
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@ -1504,10 +1505,10 @@ static bool dm_table_all_devices_attribute(struct dm_table *t,
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iterate_devices_callout_fn func)
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{
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struct dm_target *ti;
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unsigned i = 0;
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unsigned i;
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while (i < dm_table_get_num_targets(t)) {
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ti = dm_table_get_target(t, i++);
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for (i = 0; i < dm_table_get_num_targets(t); i++) {
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ti = dm_table_get_target(t, i);
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if (!ti->type->iterate_devices ||
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!ti->type->iterate_devices(ti, func, NULL))
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@ -1528,10 +1529,10 @@ static int device_not_write_same_capable(struct dm_target *ti, struct dm_dev *de
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static bool dm_table_supports_write_same(struct dm_table *t)
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{
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struct dm_target *ti;
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unsigned i = 0;
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unsigned i;
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while (i < dm_table_get_num_targets(t)) {
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ti = dm_table_get_target(t, i++);
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for (i = 0; i < dm_table_get_num_targets(t); i++) {
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ti = dm_table_get_target(t, i);
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if (!ti->num_write_same_bios)
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return false;
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@ -1555,7 +1556,7 @@ static int device_discard_capable(struct dm_target *ti, struct dm_dev *dev,
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static bool dm_table_supports_discards(struct dm_table *t)
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{
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struct dm_target *ti;
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unsigned i = 0;
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unsigned i;
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/*
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* Unless any target used by the table set discards_supported,
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@ -1564,8 +1565,8 @@ static bool dm_table_supports_discards(struct dm_table *t)
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* so we need to use iterate_devices here, which targets
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* supporting discard selectively must provide.
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*/
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while (i < dm_table_get_num_targets(t)) {
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ti = dm_table_get_target(t, i++);
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for (i = 0; i < dm_table_get_num_targets(t); i++) {
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ti = dm_table_get_target(t, i);
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if (!ti->num_discard_bios)
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continue;
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