Changeset 35162 in vbox for trunk/include/VBox

Timestamp:

Dec 15, 2010 7:39:54 PM (14 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

68999

Message:

BlkCache: Fix possible crash during suspend of the VM. The cache must be suspended before making the disk readonly to make sure all I/O completed

File:

• trunk/include/VBox/pdmblkcache.h (modified) (1 diff)

trunk/include/VBox/pdmblkcache.h

@@ -310 +310 @@
  */
 VMMR3DECL(void) PDMR3BlkCacheIoXferComplete(PPDMBLKCACHE pBlkCache, PPDMBLKCACHEIOXFER hIoXfer, int rcIoXfer);
+
+/**
+ * Suspends the block cache. The cache waits until all I/O transfers completed
+ * and stops to enqueue new requests after the call returned but will not accept
+ * reads, write or flushes either.
+ *
+ * @returns VBox status code.
+ * @param   pBlkCache       The cache instance.
+ */
+VMMR3DECL(int) PDMR3BlkCacheSuspend(PPDMBLKCACHE pBlkCache);
+
+/**
+ * Resumes operation of the block cache.
+ *
+ * @returns VBox status code.
+ * @param   pBlkCache       The cache instance.
+ */
+VMMR3DECL(int) PDMR3BlkCacheResume(PPDMBLKCACHE pBlkCache);
+
 /** @} */