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Commit efa4b77b authored by Shaohua Li's avatar Shaohua Li
Browse files

md: use lockdep_assert_held 



lockdep_assert_held is a better way to assert lock held, and it works
for UP.

Signed-off-by: default avatarShaohua Li <shli@fb.com>
parent f6eca2d4

drivers/md/md.c

+2 −2
Original line number Diff line number Diff line
@@ -2335,7 +2335,7 @@ static void export_array(struct mddev *mddev) 


static bool set_in_sync(struct mddev *mddev)

{

	WARN_ON_ONCE(NR_CPUS != 1 && !spin_is_locked(&mddev->lock));

	lockdep_assert_held(&mddev->lock);

	if (!mddev->in_sync) {

		mddev->sync_checkers++;

		spin_unlock(&mddev->lock);
@@ -6749,7 +6749,7 @@ static int set_array_info(struct mddev *mddev, mdu_array_info_t *info) 


void md_set_array_sectors(struct mddev *mddev, sector_t array_sectors)

{

	WARN(!mddev_is_locked(mddev), "%s: unlocked mddev!\n", __func__);

	lockdep_assert_held(&mddev->reconfig_mutex);



	if (mddev->external_size)

		return;

drivers/md/md.h

+0 −5
Original line number Diff line number Diff line
@@ -500,11 +500,6 @@ static inline void mddev_lock_nointr(struct mddev *mddev) 
	mutex_lock(&mddev->reconfig_mutex);

}



static inline int mddev_is_locked(struct mddev *mddev)

{

	return mutex_is_locked(&mddev->reconfig_mutex);

}



static inline int mddev_trylock(struct mddev *mddev)

{

	return mutex_trylock(&mddev->reconfig_mutex);

drivers/md/raid5-cache.c

+6 −6
Original line number Diff line number Diff line
@@ -539,7 +539,7 @@ static void r5l_log_run_stripes(struct r5l_log *log) 
{

	struct r5l_io_unit *io, *next;



	assert_spin_locked(&log->io_list_lock);

	lockdep_assert_held(&log->io_list_lock);



	list_for_each_entry_safe(io, next, &log->running_ios, log_sibling) {

		/* don't change list order */
@@ -555,7 +555,7 @@ static void r5l_move_to_end_ios(struct r5l_log *log) 
{

	struct r5l_io_unit *io, *next;



	assert_spin_locked(&log->io_list_lock);

	lockdep_assert_held(&log->io_list_lock);



	list_for_each_entry_safe(io, next, &log->running_ios, log_sibling) {

		/* don't change list order */
@@ -1200,7 +1200,7 @@ static void r5l_run_no_mem_stripe(struct r5l_log *log) 
{

	struct stripe_head *sh;



	assert_spin_locked(&log->io_list_lock);

	lockdep_assert_held(&log->io_list_lock);



	if (!list_empty(&log->no_mem_stripes)) {

		sh = list_first_entry(&log->no_mem_stripes,
@@ -1216,7 +1216,7 @@ static bool r5l_complete_finished_ios(struct r5l_log *log) 
	struct r5l_io_unit *io, *next;

	bool found = false;



	assert_spin_locked(&log->io_list_lock);

	lockdep_assert_held(&log->io_list_lock);



	list_for_each_entry_safe(io, next, &log->finished_ios, log_sibling) {

		/* don't change list order */
@@ -1388,7 +1388,7 @@ static void r5c_flush_stripe(struct r5conf *conf, struct stripe_head *sh) 
	 * raid5_release_stripe() while holding conf->device_lock

	 */

	BUG_ON(test_bit(STRIPE_ON_RELEASE_LIST, &sh->state));

	assert_spin_locked(&conf->device_lock);

	lockdep_assert_held(&conf->device_lock);



	list_del_init(&sh->lru);

	atomic_inc(&sh->count);
@@ -1415,7 +1415,7 @@ void r5c_flush_cache(struct r5conf *conf, int num) 
	int count;

	struct stripe_head *sh, *next;



	assert_spin_locked(&conf->device_lock);

	lockdep_assert_held(&conf->device_lock);

	if (!conf->log)

		return;