bwrite

1 files changed, 13 insertions, 0 deletions

diff --git a/bio.c b/bio.c
index 36b258e..f847c2e 100644
--- a/bio.c
+++ b/bio.c
@@ -51,6 +51,19 @@ bread(uint dev, uint sector)
 }
 
 void
+bwrite(uint dev, struct buf *b, uint sector)
+{
+  void *c;
+  extern struct spinlock ide_lock;
+
+  acquire(&ide_lock);
+  c = ide_start_rw(dev & 0xff, sector, b->data, 1, 0);
+  sleep (c, &ide_lock);
+  ide_finish(c);
+  release(&ide_lock);
+}
+
+void
 brelse(struct buf *b)
 {
   if((b->flags & B_BUSY) == 0)