/* * Copyright (c) 2015 Grzegorz Kostka (kostka.grzegorz@gmail.com) * Copyright (c) 2015 Kaho Ng (ngkaho1234@gmail.com) * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright *   notice, this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright *   notice, this list of conditions and the following disclaimer in the *   documentation and/or other materials provided with the distribution. * - The name of the author may not be used to endorse or promote products *   derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @addtogroup lwext4 * @{ *//** * @file  ext4_trans.c * @brief Ext4 transaction buffer operations. */ #include <ext4.h>#include <ext4_fs.h>#include <ext4_journal.h> int ext4_trans_set_block_dirty(struct ext4_buf *buf){	int r = EOK;#if CONFIG_JOURNALING_ENABLE	struct ext4_fs *fs = buf->bc->bdev->fs;	struct ext4_block block = {		.lb_id = buf->lba,		.data = buf->data,		.buf = buf	}; 	if (fs->jbd_journal && fs->curr_trans) {		struct jbd_trans *trans = fs->curr_trans;		return jbd_trans_set_block_dirty(trans, &block);	}#endif	ext4_bcache_set_dirty(buf);	return r;} int ext4_trans_block_get_noread(struct ext4_blockdev *bdev,			  struct ext4_block *b,			  uint64_t lba){	int r = ext4_block_get_noread(bdev, b, lba);	if (r != EOK)		return r; 	return r;} int ext4_trans_block_get(struct ext4_blockdev *bdev,		   struct ext4_block *b,		   uint64_t lba){	int r = ext4_block_get(bdev, b, lba);	if (r != EOK)		return r; 	return r;} int ext4_trans_try_revoke_block(struct ext4_blockdev *bdev __unused,			        uint64_t lba __unused){	int r = EOK;#if CONFIG_JOURNALING_ENABLE	struct ext4_fs *fs = bdev->fs;	if (fs->jbd_journal && fs->curr_trans) {		struct jbd_trans *trans = fs->curr_trans;		r = jbd_trans_try_revoke_block(trans, lba);	} else if (fs->jbd_journal) {		r = ext4_block_flush_lba(fs->bdev, lba);	}#endif	return r;} /** * @} */