tree 614f6d8df9613905ab8625c0985d0c0c96cfb39c
parent 0191f8697bbdfefcd36e7b8dc3eeddfe82893e4b
author Jens Axboe <jens.axboe@oracle.com> 1274722483 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1274722483 +0200

pipe: make F_{GET,SET}PIPE_SZ deal with byte sizes

Instead of requiring an exact number of pages as the argument and
return value, change the API to deal with number of bytes instead.

This also relaxes the requirement that the passed in size must
result in a power-of-2 page array size. Round up to the nearest
power-of-2 automatically and return the resulting size of the pipe
on success.

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