mm: Handle 0 flags in _calc_vm_trans() macro

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_calc_vm_trans() does not handle the situation when some of the passed
flags are 0 (which can happen if these VM flags do not make sense for
the architecture). Improve the _calc_vm_trans() macro to return 0 in
such situation. Since all passed flags are constant, this does not add
any runtime overhead.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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Jan Kara 2017-11-03 12:21:21 +01:00 • committed by Dan Williams

parent 8a5776a5f4

commit 592e254502

1 changed files with 2 additions and 1 deletions

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include/linux/mman.h

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