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Commit 4e4eef64 authored by Milan Broz's avatar Milan Broz Committed by Alasdair G Kergon
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dm crypt: adjust io processing functions



Rename functions to follow calling convention.
Prepare write io error processing function skeleton.

Signed-off-by: default avatarMilan Broz <mbroz@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent ee7a491e
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+25 −15
Original line number Diff line number Diff line
/*
 * Copyright (C) 2003 Christophe Saout <christophe@saout.de>
 * Copyright (C) 2004 Clemens Fruhwirth <clemens@endorphin.org>
 * Copyright (C) 2006 Red Hat, Inc. All rights reserved.
 * Copyright (C) 2006-2007 Red Hat, Inc. All rights reserved.
 *
 * This file is released under the GPL.
 */
@@ -481,14 +481,14 @@ static void crypt_dec_pending(struct dm_crypt_io *io)
 * starved by new requests which can block in the first stages due
 * to memory allocation.
 */
static void kcryptd_do_work(struct work_struct *work);
static void kcryptd_do_crypt(struct work_struct *work);
static void kcryptd_io(struct work_struct *work);
static void kcryptd_crypt(struct work_struct *work);

static void kcryptd_queue_io(struct dm_crypt_io *io)
{
	struct crypt_config *cc = io->target->private;

	INIT_WORK(&io->work, kcryptd_do_work);
	INIT_WORK(&io->work, kcryptd_io);
	queue_work(cc->io_queue, &io->work);
}

@@ -496,7 +496,7 @@ static void kcryptd_queue_crypt(struct dm_crypt_io *io)
{
	struct crypt_config *cc = io->target->private;

	INIT_WORK(&io->work, kcryptd_do_crypt);
	INIT_WORK(&io->work, kcryptd_crypt);
	queue_work(cc->crypt_queue, &io->work);
}

@@ -539,7 +539,7 @@ static void clone_init(struct dm_crypt_io *io, struct bio *clone)
	clone->bi_destructor = dm_crypt_bio_destructor;
}

static void process_read(struct dm_crypt_io *io)
static void kcryptd_io_read(struct dm_crypt_io *io)
{
	struct crypt_config *cc = io->target->private;
	struct bio *base_bio = io->base_bio;
@@ -571,7 +571,15 @@ static void process_read(struct dm_crypt_io *io)
	generic_make_request(clone);
}

static void process_write(struct dm_crypt_io *io)
static void kcryptd_io_write(struct dm_crypt_io *io)
{
}

static void kcryptd_crypt_write_io_submit(struct dm_crypt_io *io, int error)
{
}

static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
{
	struct crypt_config *cc = io->target->private;
	struct bio *base_bio = io->base_bio;
@@ -629,7 +637,7 @@ static void process_write(struct dm_crypt_io *io)
	}
}

static void crypt_read_done(struct dm_crypt_io *io, int error)
static void kcryptd_crypt_read_done(struct dm_crypt_io *io, int error)
{
	if (unlikely(error < 0))
		io->error = -EIO;
@@ -637,7 +645,7 @@ static void crypt_read_done(struct dm_crypt_io *io, int error)
	crypt_dec_pending(io);
}

static void process_read_endio(struct dm_crypt_io *io)
static void kcryptd_crypt_read_convert(struct dm_crypt_io *io)
{
	struct crypt_config *cc = io->target->private;
	int r = 0;
@@ -647,25 +655,27 @@ static void process_read_endio(struct dm_crypt_io *io)

	r = crypt_convert(cc, &io->ctx);

	crypt_read_done(io, r);
	kcryptd_crypt_read_done(io, r);
}

static void kcryptd_do_work(struct work_struct *work)
static void kcryptd_io(struct work_struct *work)
{
	struct dm_crypt_io *io = container_of(work, struct dm_crypt_io, work);

	if (bio_data_dir(io->base_bio) == READ)
		process_read(io);
		kcryptd_io_read(io);
	else
		kcryptd_io_write(io);
}

static void kcryptd_do_crypt(struct work_struct *work)
static void kcryptd_crypt(struct work_struct *work)
{
	struct dm_crypt_io *io = container_of(work, struct dm_crypt_io, work);

	if (bio_data_dir(io->base_bio) == READ)
		process_read_endio(io);
		kcryptd_crypt_read_convert(io);
	else
		process_write(io);
		kcryptd_crypt_write_convert(io);
}

/*