cregit-Linux how code gets into the kernel

Release 4.10 fs/ocfs2/inode.h

Directory: fs/ocfs2
/* -*- mode: c; c-basic-offset: 8; -*-
 * vim: noexpandtab sw=8 ts=8 sts=0:
 * inode.h
 * Function prototypes
 * Copyright (C) 2002, 2004 Oracle.  All rights reserved.
 * 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 will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * 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 to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 021110-1307, USA.

#ifndef OCFS2_INODE_H

#define OCFS2_INODE_H

#include "extent_map.h"

/* OCFS2 Inode Private Data */

struct ocfs2_inode_info
u64			ip_blkno;

struct ocfs2_lock_res		ip_rw_lockres;
struct ocfs2_lock_res		ip_inode_lockres;
struct ocfs2_lock_res		ip_open_lockres;

	/* protects allocation changes on this inode. */
struct rw_semaphore		ip_alloc_sem;

	/* protects extended attribute changes on this inode */
struct rw_semaphore		ip_xattr_sem;

	/* These fields are protected by ip_lock */
spinlock_t			ip_lock;
u32				ip_open_count;
struct list_head		ip_io_markers;
u32				ip_clusters;

u16				ip_dyn_features;
struct mutex			ip_io_mutex;
u32				ip_flags; /* see below */
u32				ip_attr; /* inode attributes */

	/* Record unwritten extents during direct io. */
struct list_head		ip_unwritten_list;

	/* protected by recovery_lock. */
struct inode			*ip_next_orphan;

struct ocfs2_caching_info	ip_metadata_cache;
struct ocfs2_extent_map		ip_extent_map;
struct inode			vfs_inode;
struct jbd2_inode		ip_jinode;

u32				ip_dir_start_lookup;

	/* Only valid if the inode is the dir. */
u32				ip_last_used_slot;
u64				ip_last_used_group;
u32				ip_dir_lock_gen;

struct ocfs2_alloc_reservation	ip_la_data_resv;

         * Transactions that contain inode's metadata needed to complete
         * fsync and fdatasync, respectively.
tid_t i_sync_tid;
tid_t i_datasync_tid;

struct dquot *i_dquot[MAXQUOTAS];

 * Flags for the ip_flags field
/* System file inodes  */

#define OCFS2_INODE_SYSTEM_FILE		0x00000001

#define OCFS2_INODE_JOURNAL		0x00000002

#define OCFS2_INODE_BITMAP		0x00000004
/* This inode has been wiped from disk */

#define OCFS2_INODE_DELETED		0x00000008
/* Has the inode been orphaned on another node?
 * This hints to ocfs2_drop_inode that it should clear i_nlink before
 * continuing.
 * We *only* set this on unlink vote from another node. If the inode
 * was locally orphaned, then we're sure of the state and don't need
 * to twiddle i_nlink later - it's either zero or not depending on
 * whether our unlink succeeded. Otherwise we got this from a node
 * whose intention was to orphan the inode, however he may have
 * crashed, failed etc, so we let ocfs2_drop_inode zero the value and
 * rely on ocfs2_delete_inode to sort things out under the proper
 * cluster locks.

#define OCFS2_INODE_MAYBE_ORPHANED	0x00000010
/* Does someone have the file open O_DIRECT */

#define OCFS2_INODE_OPEN_DIRECT		0x00000020
/* Tell the inode wipe code it's not in orphan dir */

#define OCFS2_INODE_SKIP_ORPHAN_DIR     0x00000040
/* Entry in orphan dir with 'dio-' prefix */

#define OCFS2_INODE_DIO_ORPHAN_ENTRY	0x00000080

static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode) { return container_of(inode, struct ocfs2_inode_info, vfs_inode); }


mark fashehmark fasheh25100.00%1100.00%

#define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL) #define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL) extern const struct address_space_operations ocfs2_aops; extern const struct ocfs2_caching_operations ocfs2_inode_caching_ops;
static inline struct ocfs2_caching_info *INODE_CACHE(struct inode *inode) { return &OCFS2_I(inode)->ip_metadata_cache; }


joel beckerjoel becker23100.00%1100.00%

void ocfs2_evict_inode(struct inode *inode); int ocfs2_drop_inode(struct inode *inode); /* Flags for ocfs2_iget() */ #define OCFS2_FI_FLAG_SYSFILE 0x1 #define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2 #define OCFS2_FI_FLAG_FILECHECK_CHK 0x4 #define OCFS2_FI_FLAG_FILECHECK_FIX 0x8 struct inode *ocfs2_ilookup(struct super_block *sb, u64 feoff); struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags, int sysfile_type); int ocfs2_inode_revalidate(struct dentry *dentry); void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, int create_ino); void ocfs2_sync_blockdev(struct super_block *sb); void ocfs2_refresh_inode(struct inode *inode, struct ocfs2_dinode *fe); int ocfs2_mark_inode_dirty(handle_t *handle, struct inode *inode, struct buffer_head *bh); void ocfs2_set_inode_flags(struct inode *inode); void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi);
static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode) { int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9; return (blkcnt_t)OCFS2_I(inode)->ip_clusters << c_to_s_bits; }


mark fashehmark fasheh3794.87%150.00%
joseph qijoseph qi25.13%150.00%

/* Validate that a bh contains a valid inode */ int ocfs2_validate_inode_block(struct super_block *sb, struct buffer_head *bh); /* * Read an inode block into *bh. If *bh is NULL, a bh will be allocated. * This is a cached read. The inode will be validated with * ocfs2_validate_inode_block(). */ int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh); /* The same, but can be passed OCFS2_BH_* flags */ int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, int flags);
static inline struct ocfs2_inode_info *cache_info_to_inode(struct ocfs2_caching_info *ci) { return container_of(ci, struct ocfs2_inode_info, ip_metadata_cache); }


joel beckerjoel becker25100.00%1100.00%

/* Does this inode have the reflink flag set? */
static inline bool ocfs2_is_refcount_inode(struct inode *inode) { return (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL); }


darrick j. wongdarrick j. wong24100.00%1100.00%

#endif /* OCFS2_INODE_H */

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Directory: fs/ocfs2
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