tree 4d7800effffe61bd3eaeae8f13e44466e4818b36
parent 87ae9afdcada236d0a1b38ce2c465a65916961dc
author Jens Axboe <jens.axboe@oracle.com> 1193828797 +0100
committer Jens Axboe <axboe@carl.home.kernel.dk> 1193989626 +0100

[SG] Get rid of __sg_mark_end()

sg_mark_end() overwrites the page_link information, but all users want
__sg_mark_end() behaviour where we just set the end bit. That is the most
natural way to use the sg list, since you'll fill it in and then mark the
end point.

So change sg_mark_end() to only set the termination bit. Add a sg_magic
debug check as well, and clear a chain pointer if it is set.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>