Messages in this thread Patch in this message | | | Date | Wed, 8 Jan 2003 09:54:10 +0000 | Subject | [PATCH 1/10] dm: Don't let the ioctl interface drop a suspended device | From | Joe Thornber <> |
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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/
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