dm verity: avoid deadlock

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / md / dm-bufio.c

diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index 93205e3..c608313 100644 (file)
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -1025,6 +1025,8 @@ void dm_bufio_prefetch(struct dm_bufio_client *c,
 {
        struct blk_plug plug;
 
+       BUG_ON(dm_bufio_in_request());
+
        blk_start_plug(&plug);
        dm_bufio_lock(c);
 
@@ -1192,7 +1194,7 @@ EXPORT_SYMBOL_GPL(dm_bufio_write_dirty_buffers);
 int dm_bufio_issue_flush(struct dm_bufio_client *c)
 {
        struct dm_io_request io_req = {
-               .bi_rw = REQ_FLUSH,
+               .bi_rw = WRITE_FLUSH,
                .mem.type = DM_IO_KMEM,
                .mem.ptr.addr = NULL,
                .client = c->dm_io,