init_tracked_chunk(bio);
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
bio->bi_bdev = s->cow->bdev;
return DM_MAPIO_REMAPPED;
}
* to copy an exception */
down_write(&s->lock);
- if (!s->valid || (unlikely(s->snapshot_overflowed) && bio_rw(bio) == WRITE)) {
+ if (!s->valid || (unlikely(s->snapshot_overflowed) &&
+ bio_data_dir(bio) == WRITE)) {
r = -EIO;
goto out_unlock;
}
* flags so we should only get this if we are
* writeable.
*/
- if (bio_rw(bio) == WRITE) {
+ if (bio_data_dir(bio) == WRITE) {
pe = __lookup_pending_exception(s, chunk);
if (!pe) {
up_write(&s->lock);
init_tracked_chunk(bio);
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
if (!dm_bio_get_target_bio_nr(bio))
bio->bi_bdev = s->origin->bdev;
else
e = dm_lookup_exception(&s->complete, chunk);
if (e) {
/* Queue writes overlapping with chunks being merged */
- if (bio_rw(bio) == WRITE &&
+ if (bio_data_dir(bio) == WRITE &&
chunk >= s->first_merging_chunk &&
chunk < (s->first_merging_chunk +
s->num_merging_chunks)) {
remap_exception(s, e, bio, chunk);
- if (bio_rw(bio) == WRITE)
+ if (bio_data_dir(bio) == WRITE)
track_chunk(s, bio, chunk);
goto out_unlock;
}
redirect_to_origin:
bio->bi_bdev = s->origin->bdev;
- if (bio_rw(bio) == WRITE) {
+ if (bio_data_dir(bio) == WRITE) {
up_write(&s->lock);
return do_origin(s->origin, bio);
}
bio->bi_bdev = o->dev->bdev;
- if (unlikely(bio->bi_rw & REQ_FLUSH))
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH))
return DM_MAPIO_REMAPPED;
- if (bio_rw(bio) != WRITE)
+ if (bio_data_dir(bio) != WRITE)
return DM_MAPIO_REMAPPED;
available_sectors = o->split_boundary -
return do_origin(o->dev, bio);
}
+static long origin_direct_access(struct dm_target *ti, sector_t sector,
+ void **kaddr, pfn_t *pfn, long size)
+{
+ DMWARN("device does not support dax.");
+ return -EIO;
+}
+
/*
* Set the target "max_io_len" field to the minimum of all the snapshots'
* chunk sizes.
.postsuspend = origin_postsuspend,
.status = origin_status,
.iterate_devices = origin_iterate_devices,
+ .direct_access = origin_direct_access,
};
static struct target_type snapshot_target = {