/*
 * 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_BMAP_ITEM_H__
#define	__XFS_BMAP_ITEM_H__

/*
 * There are (currently) two pairs of bmap btree redo item types: map & unmap.
 * The common abbreviations for these are BUI (bmap update intent) and BUD
 * (bmap 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 bmbt 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
 * bmbt metadata updates in the non-first transaction.
 */

/* kernel only BUI/BUD definitions */

struct xfs_mount;
struct kmem_zone;

/*
 * Max number of extents in fast allocation path.
 */
#define	XFS_BUI_MAX_FAST_EXTENTS	1

/*
 * Define BUI flag bits. Manipulated by set/clear/test_bit operators.
 */
#define	XFS_BUI_RECOVERED		1

/*
 * This is the "bmap 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
 * "bmap 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_bui_log_item {
	struct xfs_log_item		bui_item;
	atomic_t			bui_refcount;
	atomic_t			bui_next_extent;
	unsigned long			bui_flags;	/* misc flags */
	struct xfs_bui_log_format	bui_format;
};

static inline size_t
xfs_bui_log_item_sizeof(
	unsigned int		nr)
{
	return offsetof(struct xfs_bui_log_item, bui_format) +
			xfs_bui_log_format_sizeof(nr);
}

/*
 * This is the "bmap update done" log item.  It is used to log the fact that
 * some bmbt updates mentioned in an earlier bui item have been performed.
 */
struct xfs_bud_log_item {
	struct xfs_log_item		bud_item;
	struct xfs_bui_log_item		*bud_buip;
	struct xfs_bud_log_format	bud_format;
};

extern struct kmem_zone	*xfs_bui_zone;
extern struct kmem_zone	*xfs_bud_zone;

struct xfs_bui_log_item *xfs_bui_init(struct xfs_mount *);
struct xfs_bud_log_item *xfs_bud_init(struct xfs_mount *,
		struct xfs_bui_log_item *);
void xfs_bui_item_free(struct xfs_bui_log_item *);
void xfs_bui_release(struct xfs_bui_log_item *);
int xfs_bui_recover(struct xfs_mount *mp, struct xfs_bui_log_item *buip);

#endif	/* __XFS_BMAP_ITEM_H__ */
55.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='161e6d44a5e2d3f85365cb717d60e363171b39e6'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='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>Gabriel Krisman Bertazi &lt;krisman@collabora.co.uk&gt;</td><td class='right'>2017-01-16 12:23:42 -0200</td></tr>
<tr><th>committer</th><td>Ulf Hansson &lt;ulf.hansson@linaro.org&gt;</td><td class='right'>2017-01-31 11:26:49 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/storage/unusual_sddr55.h?id=161e6d44a5e2d3f85365cb717d60e363171b39e6'>161e6d44a5e2d3f85365cb717d60e363171b39e6</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/storage/unusual_sddr55.h?id=161e6d44a5e2d3f85365cb717d60e363171b39e6'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=161e6d44a5e2d3f85365cb717d60e363171b39e6'>5c8b730a137696ef979f05ceae869b6e0348794c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/storage/unusual_sddr55.h?id=161e6d44a5e2d3f85365cb717d60e363171b39e6'>drivers/usb/storage/unusual_sddr55.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/storage/unusual_sddr55.h?id=566cf877a1fcb6d6dc0126b076aad062054c2637'>566cf877a1fcb6d6dc0126b076aad062054c2637</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/storage/unusual_sddr55.h?id=161e6d44a5e2d3f85365cb717d60e363171b39e6&amp;id2=566cf877a1fcb6d6dc0126b076aad062054c2637'>diff</a>)</td></tr></table>
<div class='commit-subject'>mmc: sdhci: Ignore unexpected CARD_INT interrupts</div><div class='commit-msg'>One of our kernelCI boxes hanged at boot because a faulty eSDHC device
was triggering spurious CARD_INT interrupts for SD cards, causing CMD52
reads, which are not allowed for SD devices.  This adds a sanity check
to the interruption path, preventing that illegal command from getting
sent if the CARD_INT interruption should be disabled.

This quirk allows that particular machine to resume boot despite the
faulty hardware, instead of getting hung dealing with thousands of
mishandled interrupts.

Suggested-by: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Signed-off-by: Gabriel Krisman Bertazi &lt;krisman@collabora.co.uk&gt;
Acked-by: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Cc: &lt;stable@vger.kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=161e6d44a5e2d3f85365cb717d60e363171b39e6'>Diffstat</a> (limited to 'drivers/usb/storage/unusual_sddr55.h')</div><table summary='diffstat' class='diffstat'>