mmc: card: Adding support for sanitize in eMMC 4.5
The sanitize support is added as a user-app ioctl call, and
was removed from the block-device request, since its purpose is
to be invoked not via File-System but by a user.
This feature deletes the unmap memory region of the eMMC card,
by writing to a specific register in the EXT_CSD.
unmap region is the memory region that was previously deleted
(by erase, trim or discard operation).
In order to avoid timeout when sanitizing large-scale cards,
the timeout for sanitize operation is 240 seconds.
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 39613b9..bd06ff5 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -96,6 +96,8 @@
*/
unsigned int cmd_timeout_ms; /* in milliseconds */
+ /* Set this flag only for blocking sanitize request */
+ bool sanitize_busy;
struct mmc_data *data; /* data segment associated with cmd */
struct mmc_request *mrq; /* associated request */