[PATCH v5 5/6] nvdimm: Increase max envelope size for IOCTL

[Jerry Hoemann]

In __nd_ioctl must first read in the fixed sized portion of an ioctl
so that it can then determine the size of the variable part.

Prepare for ND_CMD_CALL_DSM calls which have larger fixed portion
wrapper.

Signed-off-by: Jerry Hoemann <jerry.hoemann@xxxxxxx>
---
 include/linux/libnvdimm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index 3f021dc..b0a2f60 100644
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -27,7 +27,7 @@ enum {
 	/* need to set a limit somewhere, but yes, this is likely overkill */
 	ND_IOCTL_MAX_BUFLEN = SZ_4M,
 	ND_CMD_MAX_ELEM = 4,
-	ND_CMD_MAX_ENVELOPE = 16,
+	ND_CMD_MAX_ENVELOPE = 256,
 	ND_CMD_ARS_STATUS_MAX = SZ_4K,
 	ND_MAX_MAPPINGS = 32,
 
-- 
1.7.11.3

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