tree 6f940ba17f38b693e495ad5267b1988dd66c9c0f
parent dde0c2e79848298cc25621ad080d47f94dbd7cce
author Christoph Hellwig <hch@lst.de> 1460044321 -0700
committer Al Viro <viro@zeniv.linux.org.uk> 1462147119 -0400

fs: simplify the generic_write_sync prototype

The kiocb already has the new position, so use that.  The only interesting
case is AIO, where we currently don't bother updating ki_pos.  We're about
to free the kiocb after we're done, so we might as well update it to make
everyone's life simpler.

While we're at it also return the bytes written argument passed in if
we were successful so that the boilerplate error switch code in the
callers can go away.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>