/*
 * Copyright (C) 2016 Oracle.  All Rights Reserved.
 *
 * Author: Darrick J. Wong <darrick.wong@oracle.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA.
 */
#ifndef	__XFS_RMAP_ITEM_H__
#define	__XFS_RMAP_ITEM_H__

/*
 * There are (currently) three pairs of rmap btree redo item types: map, unmap,
 * and convert.  The common abbreviations for these are RUI (rmap update
 * intent) and RUD (rmap update done).  The redo item type is encoded in the
 * flags field of each xfs_map_extent.
 *
 * *I items should be recorded in the *first* of a series of rolled
 * transactions, and the *D items should be recorded in the same transaction
 * that records the associated rmapbt updates.  Typically, the first
 * transaction will record a bmbt update, followed by some number of
 * transactions containing rmapbt updates, and finally transactions with any
 * bnobt/cntbt updates.
 *
 * Should the system crash after the commit of the first transaction but
 * before the commit of the final transaction in a series, log recovery will
 * use the redo information recorded by the intent items to replay the
 * (rmapbt/bnobt/cntbt) metadata updates in the non-first transaction.
 */

/* kernel only RUI/RUD definitions */

struct xfs_mount;
struct kmem_zone;

/*
 * Max number of extents in fast allocation path.
 */
#define	XFS_RUI_MAX_FAST_EXTENTS	16

/*
 * Define RUI flag bits. Manipulated by set/clear/test_bit operators.
 */
#define	XFS_RUI_RECOVERED		1

/*
 * This is the "rmap update intent" log item.  It is used to log the fact that
 * some reverse mappings need to change.  It is used in conjunction with the
 * "rmap update done" log item described below.
 *
 * These log items follow the same rules as struct xfs_efi_log_item; see the
 * comments about that structure (in xfs_extfree_item.h) for more details.
 */
struct xfs_rui_log_item {
	struct xfs_log_item		rui_item;
	atomic_t			rui_refcount;
	atomic_t			rui_next_extent;
	unsigned long			rui_flags;	/* misc flags */
	struct xfs_rui_log_format	rui_format;
};

static inline size_t
xfs_rui_log_item_sizeof(
	unsigned int		nr)
{
	return offsetof(struct xfs_rui_log_item, rui_format) +
			xfs_rui_log_format_sizeof(nr);
}

/*
 * This is the "rmap update done" log item.  It is used to log the fact that
 * some rmapbt updates mentioned in an earlier rui item have been performed.
 */
struct xfs_rud_log_item {
	struct xfs_log_item		rud_item;
	struct xfs_rui_log_item		*rud_ruip;
	struct xfs_rud_log_format	rud_format;
};

extern struct kmem_zone	*xfs_rui_zone;
extern struct kmem_zone	*xfs_rud_zone;

struct xfs_rui_log_item *xfs_rui_init(struct xfs_mount *, uint);
struct xfs_rud_log_item *xfs_rud_init(struct xfs_mount *,
		struct xfs_rui_log_item *);
int xfs_rui_copy_format(struct xfs_log_iovec *buf,
		struct xfs_rui_log_format *dst_rui_fmt);
void xfs_rui_item_free(struct xfs_rui_log_item *);
void xfs_rui_release(struct xfs_rui_log_item *);
int xfs_rui_recover(struct xfs_mount *mp, struct xfs_rui_log_item *ruip);

#endif	/* __XFS_RMAP_ITEM_H__ */
ue='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-08 11:42:04 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-08 11:42:04 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/caiaq?id=83280e90ef001f77a64e2ce59c25ab66e47ab1f0'>83280e90ef001f77a64e2ce59c25ab66e47ab1f0</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/usb/caiaq?id=83280e90ef001f77a64e2ce59c25ab66e47ab1f0'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=83280e90ef001f77a64e2ce59c25ab66e47ab1f0'>ec0a5842e2fbc0f4abaff55299acac397b8da5c3</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/usb/caiaq?id=83280e90ef001f77a64e2ce59c25ab66e47ab1f0'>sound/usb/caiaq</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/caiaq?id=cc250e267bd56c531b0bee455fc724d50af83fac'>cc250e267bd56c531b0bee455fc724d50af83fac</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/usb/caiaq?id=83280e90ef001f77a64e2ce59c25ab66e47ab1f0&amp;id2=cc250e267bd56c531b0bee455fc724d50af83fac'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/caiaq?id=0a8fd1346254974c3a852338508e4a4cddbb35f1'>0a8fd1346254974c3a852338508e4a4cddbb35f1</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/usb/caiaq?id=83280e90ef001f77a64e2ce59c25ab66e47ab1f0&amp;id2=0a8fd1346254974c3a852338508e4a4cddbb35f1'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'usb-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb</div><div class='commit-msg'>Pull USB fixes from Greg KH:
 "Here are a bunch of USB fixes for 4.10-rc3. Yeah, it's a lot, an
  artifact of the holiday break I think.

  Lots of gadget and the usual XHCI fixups for reported issues (one day
  that driver will calm down...) Also included are a bunch of usb-serial
  driver fixes, and for good measure, a number of much-reported MUSB
  driver issues have finally been resolved.

  All of these have been in linux-next with no reported issues"

* tag 'usb-4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (72 commits)
  USB: fix problems with duplicate endpoint addresses
  usb: ohci-at91: use descriptor-based gpio APIs correctly
  usb: storage: unusual_uas: Add JMicron JMS56x to unusual device
  usb: hub: Move hub_port_disable() to fix warning if PM is disabled
  usb: musb: blackfin: add bfin_fifo_offset in bfin_ops
  usb: musb: fix compilation warning on unused function
  usb: musb: Fix trying to free already-free IRQ 4
  usb: musb: dsps: implement clear_ep_rxintr() callback
  usb: musb: core: add clear_ep_rxintr() to musb_platform_ops
  USB: serial: ti_usb_3410_5052: fix NULL-deref at open
  USB: serial: spcp8x5: fix NULL-deref at open
  USB: serial: quatech2: fix sleep-while-atomic in close
  USB: serial: pl2303: fix NULL-deref at open
  USB: serial: oti6858: fix NULL-deref at open
  USB: serial: omninet: fix NULL-derefs at open and disconnect
  USB: serial: mos7840: fix misleading interrupt-URB comment
  USB: serial: mos7840: remove unused write URB
  USB: serial: mos7840: fix NULL-deref at open
  USB: serial: mos7720: remove obsolete port initialisation
  USB: serial: mos7720: fix parallel probe
  ...
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=83280e90ef001f77a64e2ce59c25ab66e47ab1f0'>Diffstat</a> (limited to 'sound/usb/caiaq')</div><table summary='diffstat' class='diffstat'>