mm: add account_locked_vm utility function

locked_vm accounting is done roughly the same way in five places, so
unify them in a helper.

Include the helper's caller in the debug print to distinguish between
callsites.

Error codes stay the same, so user-visible behavior does too.  The one
exception is that the -EPERM case in tce_account_locked_vm is removed
because Alexey has never seen it triggered.

[[email protected]: v3]
  Link: http://lkml.kernel.org/r/[email protected]
[[email protected]: fix mm/util.c]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Daniel Jordan <[email protected]>
Signed-off-by: Stephen Rothwell <[email protected]>
Tested-by: Alexey Kardashevskiy <[email protected]>
Acked-by: Alex Williamson <[email protected]>
Cc: Alan Tull <[email protected]>
Cc: Alex Williamson <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Christophe Leroy <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Moritz Fischer <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Steve Sistare <[email protected]>
Cc: Wu Hao <[email protected]>
Cc: Ira Weiny <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions