lib/scatterlist: mark input buffer parameters as 'const'
authorDave Gordon <david.s.gordon@intel.com>
Tue, 30 Jun 2015 21:58:54 +0000 (14:58 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 1 Jul 2015 02:44:59 +0000 (19:44 -0700)
commit2a1bf8f93b33992bb0457512b28d046e279bbd7e
tree48db340683a7c617dd70c66a282f43d85c2714ad
parent4dc7daf843f3914c9c0c7efb71b8f251c9c4636f
lib/scatterlist: mark input buffer parameters as 'const'

The 'buf' parameter of sg(p)copy_from_buffer() can and should be
const-qualified, although because of the shared implementation of
_to_buffer() and _from_buffer(), we have to cast this away internally.

This means that callers who have a 'const' buffer containing the data to
be copied to the sg-list no longer have to cast away the const-ness
themselves.  It also enables improved coverage by code analysis tools.

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/scatterlist.h
lib/scatterlist.c