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/openbmc/linux/drivers/s390/block/ |
H A D | dasd_eckd.c | 7e64db15 Fri Apr 27 09:57:44 CDT 2018 Jan Höppner <hoeppner@linux.ibm.com> s390/dasd: Add discard support for ESE volumes
ESE (Extent Space Efficient) volumes are thin-provisioned and therefore space is only occupied with real data. In order to make previously used space available for re-allocation again, discard support is enabled for ESE volumes allowing the DASD driver to release said space.
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 7e64db15 Fri Apr 27 09:57:44 CDT 2018 Jan Höppner <hoeppner@linux.ibm.com> s390/dasd: Add discard support for ESE volumes ESE (Extent Space Efficient) volumes are thin-provisioned and therefore space is only occupied with real data. In order to make previously used space available for re-allocation again, discard support is enabled for ESE volumes allowing the DASD driver to release said space. Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
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