/* * Copyright (C) 2016 Oracle. All Rights Reserved. * * Author: Darrick J. Wong * * 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_REFCOUNT_ITEM_H__ #define __XFS_REFCOUNT_ITEM_H__ /* * There are (currently) two pairs of refcount btree redo item types: * increase and decrease. The log items for these are CUI (refcount * update intent) and CUD (refcount 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 refcountbt 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 refcountbt metadata updates. */ /* kernel only CUI/CUD definitions */ struct xfs_mount; struct kmem_zone; /* * Max number of extents in fast allocation path. */ #define XFS_CUI_MAX_FAST_EXTENTS 16 /* * Define CUI flag bits. Manipulated by set/clear/test_bit operators. */ #define XFS_CUI_RECOVERED 1 /* * This is the "refcount 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 "refcount 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_cui_log_item { struct xfs_log_item cui_item; atomic_t cui_refcount; atomic_t cui_next_extent; unsigned long cui_flags; /* misc flags */ struct xfs_cui_log_format cui_format; }; static inline size_t xfs_cui_log_item_sizeof( unsigned int nr) { return offsetof(struct xfs_cui_log_item, cui_format) + xfs_cui_log_format_sizeof(nr); } /* * This is the "refcount update done" log item. It is used to log the * fact that some refcountbt updates mentioned in an earlier cui item * have been performed. */ struct xfs_cud_log_item { struct xfs_log_item cud_item; struct xfs_cui_log_item *cud_cuip; struct xfs_cud_log_format cud_format; }; extern struct kmem_zone *xfs_cui_zone; extern struct kmem_zone *xfs_cud_zone; struct xfs_cui_log_item *xfs_cui_init(struct xfs_mount *, uint); struct xfs_cud_log_item *xfs_cud_init(struct xfs_mount *, struct xfs_cui_log_item *); void xfs_cui_item_free(struct xfs_cui_log_item *); void xfs_cui_release(struct xfs_cui_log_item *); int xfs_cui_recover(struct xfs_mount *mp, struct xfs_cui_log_item *cuip); #endif /* __XFS_REFCOUNT_ITEM_H__ */ de'>-rw-r--r--ac97_codec.h29072log plain -rw-r--r--aci.h2419log plain -rw-r--r--ad1816a.h5514log plain -rw-r--r--ad1843.h1516log plain -rw-r--r--adau1373.h699log plain -rw-r--r--aess.h1668log plain -rw-r--r--ak4113.h11112log plain -rw-r--r--ak4114.h10424log plain -rw-r--r--ak4117.h9193log plain -rw-r--r--ak4531_codec.h3173log plain -rw-r--r--ak4641.h622log plain -rw-r--r--ak4xxx-adda.h3416log plain -rw-r--r--alc5623.h497log plain -rw-r--r--asequencer.h3670log plain -rw-r--r--asound.h1285log plain -rw-r--r--asoundef.h17098log plain -rw-r--r--atmel-abdac.h639log plain -rw-r--r--atmel-ac97c.h1342log plain -rw-r--r--compress_driver.h6772log plain -rw-r--r--control.h8704log plain -rw-r--r--core.h14380log plain -rw-r--r--cs35l33.h1034log plain -rw-r--r--cs35l34.h887log plain -rw-r--r--cs4231-regs.h8480log plain -rw-r--r--cs4271.h1417log plain -rw-r--r--cs42l52.h738log plain -rw-r--r--cs42l56.h1192log plain -rw-r--r--cs42l73.h507log plain -rw-r--r--cs8403.h8833log plain -rw-r--r--cs8427.h10649log plain -rw-r--r--da7213.h1178log plain -rw-r--r--da7218.h2681log plain -rw-r--r--da7219-aad.h2476log plain -rw-r--r--da7219.h1064log plain -rw-r--r--da9055.h914log plain -rw-r--r--designware_i2s.h2249log plain -rw-r--r--dmaengine_pcm.h6157log plain -rw-r--r--emu10k1.h91396log plain -rw-r--r--emu10k1_synth.h1382log plain -rw-r--r--emu8000.h4109log plain -rw-r--r--emu8000_reg.h10459log plain -rw-r--r--emux_legacy.h5503log plain -rw-r--r--emux_synth.h7649log plain -rw-r--r--es1688.h3618log plain -rw-r--r--gus.h20691log plain -rw-r--r--hda_chmap.h2621log plain -rw-r--r--hda_hwdep.h1412log plain -rw-r--r--hda_i915.h1645log plain -rw-r--r--hda_register.h9475log plain -rw-r--r--hda_regmap.h6714log plain -rw-r--r--hda_verbs.h17130log plain -rw-r--r--hdaudio.h18455log plain -rw-r--r--hdaudio_ext.h7119log plain -rw-r--r--hdmi-codec.h2290log plain -rw-r--r--hwdep.h2624log plain -rw-r--r--i2c.h3555log plain -rw-r--r--info.h7584log plain