lkml.org 
[lkml]   [2003]   [Jan]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
Subject[PATCH 1/10] dm: Don't let the ioctl interface drop a suspended device
From
Don't let the ioctl interface drop a suspended device.
--- diff/drivers/md/dm-ioctl.c 2002-12-30 10:17:13.000000000 +0000
+++ source/drivers/md/dm-ioctl.c 2003-01-02 11:10:14.000000000 +0000
@@ -812,6 +812,24 @@
return -EINVAL;
}

+ /*
+ * You may ask the interface to drop its reference to an
+ * in use device. This is no different to unlinking a
+ * file that someone still has open. The device will not
+ * actually be destroyed until the last opener closes it.
+ * The name and uuid of the device (both are interface
+ * properties) will be available for reuse immediately.
+ *
+ * You don't want to drop a _suspended_ device from the
+ * interface, since that will leave you with no way of
+ * resuming it.
+ */
+ if (dm_suspended(hc->md)) {
+ DMWARN("refusing to remove a suspended device.");
+ up_write(&_hash_lock);
+ return -EPERM;
+ }
+
__hash_remove(hc);
up_write(&_hash_lock);
return 0;
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2005-03-22 13:32    [W:0.047 / U:2.756 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site