Esempi in C++ (Cpp) per gfs2_log_reserve

Esempio n. 1

File: glops.c Progetto: Seagate/SMR_FS-EXT4

static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
{
	struct gfs2_sbd *sdp = gl->gl_sbd;
	struct gfs2_trans tr;

	memset(&tr, 0, sizeof(tr));
	INIT_LIST_HEAD(&tr.tr_buf);
	INIT_LIST_HEAD(&tr.tr_databuf);
	tr.tr_revokes = atomic_read(&gl->gl_ail_count);

	if (!tr.tr_revokes)
		return;

	/* A shortened, inline version of gfs2_trans_begin()
         * tr->alloced is not set since the transaction structure is
         * on the stack */
	tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
	tr.tr_ip = _RET_IP_;
	if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0)
		return;
	WARN_ON_ONCE(current->journal_info);
	current->journal_info = &tr;

	__gfs2_ail_flush(gl, 0, tr.tr_revokes);

	gfs2_trans_end(sdp);
	gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
}

Esempio n. 2

int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks,
		     unsigned int revokes)
{
	struct gfs2_trans *tr;
	int error;

	BUG_ON(current->journal_info);
	BUG_ON(blocks == 0 && revokes == 0);

	if (!test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags))
		return -EROFS;

	tr = kzalloc(sizeof(struct gfs2_trans), GFP_NOFS);
	if (!tr)
		return -ENOMEM;

	tr->tr_ip = (unsigned long)__builtin_return_address(0);
	tr->tr_blocks = blocks;
	tr->tr_revokes = revokes;
	tr->tr_reserved = 1;
	if (blocks)
		tr->tr_reserved += 6 + blocks;
	if (revokes)
		tr->tr_reserved += gfs2_struct2blk(sdp, revokes,
						   sizeof(u64));
	INIT_LIST_HEAD(&tr->tr_list_buf);

	gfs2_holder_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &tr->tr_t_gh);

	error = gfs2_glock_nq(&tr->tr_t_gh);
	if (error)
		goto fail_holder_uninit;

	error = gfs2_log_reserve(sdp, tr->tr_reserved);
	if (error)
		goto fail_gunlock;

	current->journal_info = tr;

	return 0;

fail_gunlock:
	gfs2_glock_dq(&tr->tr_t_gh);

fail_holder_uninit:
	gfs2_holder_uninit(&tr->tr_t_gh);
	kfree(tr);

	return error;
}

Esempio n. 3

File: glops.c Progetto: AbheekG/XIA-for-Linux

static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
{
	struct gfs2_sbd *sdp = gl->gl_sbd;
	struct list_head *head = &gl->gl_ail_list;
	struct gfs2_bufdata *bd;
	struct buffer_head *bh;
	struct gfs2_trans tr;

	memset(&tr, 0, sizeof(tr));
	tr.tr_revokes = atomic_read(&gl->gl_ail_count);

	if (!tr.tr_revokes)
		return;

	/* A shortened, inline version of gfs2_trans_begin() */
	tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
	tr.tr_ip = (unsigned long)__builtin_return_address(0);
	INIT_LIST_HEAD(&tr.tr_list_buf);
	gfs2_log_reserve(sdp, tr.tr_reserved);
	BUG_ON(current->journal_info);
	current->journal_info = &tr;

	spin_lock(&sdp->sd_ail_lock);
	while (!list_empty(head)) {
		bd = list_entry(head->next, struct gfs2_bufdata,
				bd_ail_gl_list);
		bh = bd->bd_bh;
		gfs2_remove_from_ail(bd);
		spin_unlock(&sdp->sd_ail_lock);

		bd->bd_bh = NULL;
		bh->b_private = NULL;
		bd->bd_blkno = bh->b_blocknr;
		gfs2_log_lock(sdp);
		gfs2_assert_withdraw(sdp, !buffer_busy(bh));
		gfs2_trans_add_revoke(sdp, bd);
		gfs2_log_unlock(sdp);

		spin_lock(&sdp->sd_ail_lock);
	}
	gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
	spin_unlock(&sdp->sd_ail_lock);

	gfs2_trans_end(sdp);
	gfs2_log_flush(sdp, NULL);
}

Esempio n. 4

File: glops.c Progetto: spacex/kernel-centos7

static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
{
	struct gfs2_sbd *sdp = gl->gl_sbd;
	struct gfs2_trans tr;

	memset(&tr, 0, sizeof(tr));
	tr.tr_revokes = atomic_read(&gl->gl_ail_count);

	if (!tr.tr_revokes)
		return;

	/* A shortened, inline version of gfs2_trans_begin() */
	tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
	tr.tr_ip = (unsigned long)__builtin_return_address(0);
	sb_start_intwrite(sdp->sd_vfs);
	gfs2_log_reserve(sdp, tr.tr_reserved);
	WARN_ON_ONCE(current->journal_info);
	current->journal_info = &tr;

	__gfs2_ail_flush(gl, 0, tr.tr_revokes);

	gfs2_trans_end(sdp);
	gfs2_log_flush(sdp, NULL);
}