HAMMER VFS - Add debugging for write I/O

* vfs.hammer.debug_io=2 will kprintf() each write I/O

diff --git a/sys/vfs/hammer/hammer_io.c b/sys/vfs/hammer/hammer_io.c
index f7dd622..ad18127 100644 (file)
--- a/sys/vfs/hammer/hammer_io.c
+++ b/sys/vfs/hammer/hammer_io.c
@@ -552,6 +552,9 @@ hammer_io_flush(struct hammer_io *io, int reclaim)
        hammer_io_clear_modify(io, 0);
        hammer_unref(&io->lock);
 
+       if (hammer_debug_io & 0x0002)
+               kprintf("hammer io_write %016jx\n", bp->b_bio1.bio_offset);
+
        /*
         * Transfer ownership to the kernel and initiate I/O.
         */