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dm: convert wait loops to use autoremove_wake_function()

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Use autoremove_wake_function() instead of default_wake_function()
to make the dm wait loops more similar to other wait loops in the
kernel.  This patch does not change any functionality.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Bart Van Assche 2016-08-31 15:16:43 -07:00 committed by Mike Snitzer
parent e3fabdfdf7
commit 9f4c3f874a
2 changed files with 6 additions and 14 deletions
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10
drivers/md/dm-mpath.c
View File

@ -1193,21 +1193,17 @@ static int multipath_ctr(struct dm_target *ti, unsigned argc, char **argv)
static void multipath_wait_for_pg_init_completion(struct multipath *m)
{
DECLARE_WAITQUEUE(wait, current);
add_wait_queue(&m->pg_init_wait, &wait);
DEFINE_WAIT(wait);
while (1) {
set_current_state(TASK_UNINTERRUPTIBLE);
prepare_to_wait(&m->pg_init_wait, &wait, TASK_UNINTERRUPTIBLE);
if (!atomic_read(&m->pg_init_in_progress))
break;
io_schedule();
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&m->pg_init_wait, &wait);
finish_wait(&m->pg_init_wait, &wait);
}
static void flush_multipath_work(struct multipath *m)

10
drivers/md/dm.c
View File

@ -1944,12 +1944,10 @@ EXPORT_SYMBOL_GPL(dm_put);
static int dm_wait_for_completion(struct mapped_device *md, long task_state)
{
int r = 0;
DECLARE_WAITQUEUE(wait, current);
add_wait_queue(&md->wait, &wait);
DEFINE_WAIT(wait);
while (1) {
set_current_state(task_state);
prepare_to_wait(&md->wait, &wait, task_state);
if (!md_in_flight(md))
break;
@ -1961,9 +1959,7 @@ static int dm_wait_for_completion(struct mapped_device *md, long task_state)
io_schedule();
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&md->wait, &wait);
finish_wait(&md->wait, &wait);
return r;
}