Add a list to the struct dm_dev structure to store the associated
targets.
Signed-off-by: Yang Yang <yang.yang@xxxxxxxx>
---
drivers/md/dm-table.c | 16 ++++++++++++++++
include/linux/device-mapper.h | 1 +
2 files changed, 17 insertions(+)
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index bd68af10afed..4817ddb660c4 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -2134,6 +2134,13 @@ void dm_table_postsuspend_targets(struct dm_table *t)
suspend_targets(t, POSTSUSPEND);
}
+static int dm_link_dev_to_target(struct dm_target *ti, struct dm_dev *dev,
+ sector_t start, sector_t len, void *data)
+{
+ dev->ti = ti;
+ return 0;
+}
+
int dm_table_resume_targets(struct dm_table *t)
{
unsigned int i;
@@ -2162,6 +2169,15 @@ int dm_table_resume_targets(struct dm_table *t)
ti->type->resume(ti);
}
+ if (t->flush_pass_around) {
+ for (i = 0; i < t->num_targets; i++) {
+ struct dm_target *ti = dm_table_get_target(t, i);
+
+ if (ti->type->iterate_devices)
+ ti->type->iterate_devices(ti, dm_link_dev_to_target, NULL);
+ }
+ }
+
return 0;
}
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 0893ff8c01b6..c6696f88bf66 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -169,6 +169,7 @@ struct dm_dev {
struct dax_device *dax_dev;
blk_mode_t mode;
char name[16];
+ struct dm_target *ti;
};
/*
--
2.34.1
