xprtrdma: Stack relief in fmr_op_map()

fmr_op_map() declares a 64 element array of u64 in automatic
storage. This is 512 bytes (8 * 64) on the stack.

Instead, when FMR memory registration is in use, pre-allocate a
physaddr array for each rpcrdma_mw.

This is a pre-requisite for increasing the r/wsize maximum for
FMR on platforms with 4KB pages.

Signed-off-by: Chuck Lever <[email protected]>
Reviewed-by: Steve Wise <[email protected]>
Reviewed-by: Sagi Grimberg <[email protected]>
Reviewed-by: Devesh Sharma <[email protected]>
Tested-By: Devesh Sharma <[email protected]>
Reviewed-by: Doug Ledford <[email protected]>
Signed-off-by: Anna Schumaker <[email protected]>

0 files changed, 0 insertions, 0 deletions