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libnvdimm: increase max envelope size for ioctl

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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 calls which have larger fixed portion
envelope.

Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Jerry Hoemann 2016-04-11 15:02:28 -07:00 committed by Dan Williams
parent c7e16e5257
commit 40abf9be8f
1 changed files with 1 additions and 1 deletions
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2
include/linux/libnvdimm.h
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@ -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 = 5,
ND_CMD_MAX_ENVELOPE = 16,
ND_CMD_MAX_ENVELOPE = 256,
ND_MAX_MAPPINGS = 32,
/* region flag indicating to direct-map persistent memory by default */