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Commit adadfe48 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.infradead.org/ubifs-2.6 

* 'for-linus' of git://git.infradead.org/ubifs-2.6:
  UBIFS: seek journal heads to the latest bud in replay
  UBIFS: do not free write-buffers when in R/O mode
parents 625a3b60 52c6e6f9

fs/ubifs/log.c

+0 −20
Original line number Diff line number Diff line
@@ -174,26 +174,6 @@ void ubifs_add_bud(struct ubifs_info *c, struct ubifs_bud *bud) 
	spin_unlock(&c->buds_lock);

}



/**

 * ubifs_create_buds_lists - create journal head buds lists for remount rw.

 * @c: UBIFS file-system description object

 */

void ubifs_create_buds_lists(struct ubifs_info *c)

{

	struct rb_node *p;



	spin_lock(&c->buds_lock);

	p = rb_first(&c->buds);

	while (p) {

		struct ubifs_bud *bud = rb_entry(p, struct ubifs_bud, rb);

		struct ubifs_jhead *jhead = &c->jheads[bud->jhead];



		list_add_tail(&bud->list, &jhead->buds_list);

		p = rb_next(p);

	}

	spin_unlock(&c->buds_lock);

}



/**

 * ubifs_add_bud_to_log - add a new bud to the log.

 * @c: UBIFS file-system description object

fs/ubifs/replay.c

+12 −6
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ enum { 
 * @new_size: truncation new size

 * @free: amount of free space in a bud

 * @dirty: amount of dirty space in a bud from padding and deletion nodes

 * @jhead: journal head number of the bud

 *

 * UBIFS journal replay must compare node sequence numbers, which means it must

 * build a tree of node information to insert into the TNC.
@@ -80,6 +81,7 @@ struct replay_entry { 
		struct {

			int free;

			int dirty;

			int jhead;

		};

	};

};
@@ -159,6 +161,11 @@ static int set_bud_lprops(struct ubifs_info *c, struct replay_entry *r) 
		err = PTR_ERR(lp);

		goto out;

	}



	/* Make sure the journal head points to the latest bud */

	err = ubifs_wbuf_seek_nolock(&c->jheads[r->jhead].wbuf, r->lnum,

				     c->leb_size - r->free, UBI_SHORTTERM);



out:

	ubifs_release_lprops(c);

	return err;
@@ -627,10 +634,6 @@ static int replay_bud(struct ubifs_info *c, int lnum, int offs, int jhead, 
	ubifs_assert(sleb->endpt - offs >= used);

	ubifs_assert(sleb->endpt % c->min_io_size == 0);



	if (sleb->endpt + c->min_io_size <= c->leb_size && !c->ro_mount)

		err = ubifs_wbuf_seek_nolock(&c->jheads[jhead].wbuf, lnum,

					     sleb->endpt, UBI_SHORTTERM);



	*dirty = sleb->endpt - offs - used;

	*free = c->leb_size - sleb->endpt;
@@ -653,12 +656,14 @@ out_dump: 
 * @sqnum: sequence number

 * @free: amount of free space in bud

 * @dirty: amount of dirty space from padding and deletion nodes

 * @jhead: journal head number for the bud

 *

 * This function inserts a reference node to the replay tree and returns zero

 * in case of success or a negative error code in case of failure.

 */

static int insert_ref_node(struct ubifs_info *c, int lnum, int offs,

			   unsigned long long sqnum, int free, int dirty)

			   unsigned long long sqnum, int free, int dirty,

			   int jhead)

{

	struct rb_node **p = &c->replay_tree.rb_node, *parent = NULL;

	struct replay_entry *r;
@@ -688,6 +693,7 @@ static int insert_ref_node(struct ubifs_info *c, int lnum, int offs, 
	r->flags = REPLAY_REF;

	r->free = free;

	r->dirty = dirty;

	r->jhead = jhead;



	rb_link_node(&r->rb, parent, p);

	rb_insert_color(&r->rb, &c->replay_tree);
@@ -712,7 +718,7 @@ static int replay_buds(struct ubifs_info *c) 
		if (err)

			return err;

		err = insert_ref_node(c, b->bud->lnum, b->bud->start, b->sqnum,

				      free, dirty);

				      free, dirty, b->bud->jhead);

		if (err)

			return err;

	}

fs/ubifs/super.c

+4 −11
Original line number Diff line number Diff line
@@ -1257,12 +1257,12 @@ static int mount_ubifs(struct ubifs_info *c) 
		goto out_free;

	}



	sprintf(c->bgt_name, BGT_NAME_PATTERN, c->vi.ubi_num, c->vi.vol_id);

	if (!c->ro_mount) {

	err = alloc_wbufs(c);

	if (err)

		goto out_cbuf;



	sprintf(c->bgt_name, BGT_NAME_PATTERN, c->vi.ubi_num, c->vi.vol_id);

	if (!c->ro_mount) {

		/* Create background thread */

		c->bgt = kthread_create(ubifs_bg_thread, c, "%s", c->bgt_name);

		if (IS_ERR(c->bgt)) {
@@ -1631,12 +1631,6 @@ static int ubifs_remount_rw(struct ubifs_info *c) 
	if (err)

		goto out;



	err = alloc_wbufs(c);

	if (err)

		goto out;



	ubifs_create_buds_lists(c);



	/* Create background thread */

	c->bgt = kthread_create(ubifs_bg_thread, c, "%s", c->bgt_name);

	if (IS_ERR(c->bgt)) {
@@ -1744,7 +1738,6 @@ static void ubifs_remount_ro(struct ubifs_info *c) 
	if (err)

		ubifs_ro_mode(c, err);



	free_wbufs(c);

	vfree(c->orph_buf);

	c->orph_buf = NULL;

	kfree(c->write_reserve_buf);