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nexedi
linux
Commits
d7002d66
Commit
d7002d66
authored
Jan 07, 2003
by
Joe Thornber
Committed by
Trond Myklebust
Jan 07, 2003
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[PATCH] dm: Don't let the ioctl interface drop a suspended device
Don't let the ioctl interface drop a suspended device.
parent
a10edc31
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+18
-0
drivers/md/dm-ioctl.c
drivers/md/dm-ioctl.c
+18
-0
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drivers/md/dm-ioctl.c
View file @
d7002d66
...
...
@@ -812,6 +812,24 @@ static int remove(struct dm_ioctl *param, struct dm_ioctl *user)
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
;
...
...
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