X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=drivers%2Fmd%2Fdm-bufio.h;h=b142946a9e32ea23dcc241b5120ba00fe09e5287;hb=3badbdac6c1294adc782c47d533254d014adca56;hp=5c4c3a04e3810d76fc9b65277a99a3479cd3e23a;hpb=c126dea771be1b3c370c0ffc4a09e6a82d492a49;p=cascardo%2Flinux.git

diff --git a/drivers/md/dm-bufio.h b/drivers/md/dm-bufio.h
index 5c4c3a04e381..b142946a9e32 100644
--- a/drivers/md/dm-bufio.h
+++ b/drivers/md/dm-bufio.h
@@ -62,6 +62,14 @@ void *dm_bufio_get(struct dm_bufio_client *c, sector_t block,
 void *dm_bufio_new(struct dm_bufio_client *c, sector_t block,
 		   struct dm_buffer **bp);
 
+/*
+ * Prefetch the specified blocks to the cache.
+ * The function starts to read the blocks and returns without waiting for
+ * I/O to finish.
+ */
+void dm_bufio_prefetch(struct dm_bufio_client *c,
+		       sector_t block, unsigned n_blocks);
+
 /*
  * Release a reference obtained with dm_bufio_{read,get,new}. The data
  * pointer and dm_buffer pointer is no longer valid after this call.