29ac8e856c
Connect the new VFS clone_range, copy_range, and dedupe_range features to the existing reflink capability of ocfs2. Compared to the existing ocfs2 reflink ioctl We have to do things a little differently to support the VFS semantics (we can clone subranges of a file but we don't clone xattrs), but the VFS ioctls are more broadly supported. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> --- v2: Convert inline data files to extents files before reflinking, and fix i_blocks so that stat(2) output is correct. v3: Make zero-length dedupe consistent with btrfs behavior. v4: Use VFS double-inode lock routines and remove MAX_DEDUPE_LEN.
89 lines
3.0 KiB
C
89 lines
3.0 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* file.h
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*
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* Function prototypes
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*
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* Copyright (C) 2002, 2004 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef OCFS2_FILE_H
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#define OCFS2_FILE_H
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extern const struct file_operations ocfs2_fops;
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extern const struct file_operations ocfs2_dops;
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extern const struct file_operations ocfs2_fops_no_plocks;
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extern const struct file_operations ocfs2_dops_no_plocks;
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extern const struct inode_operations ocfs2_file_iops;
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extern const struct inode_operations ocfs2_special_file_iops;
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struct ocfs2_alloc_context;
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enum ocfs2_alloc_restarted;
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struct ocfs2_file_private {
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struct file *fp_file;
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struct mutex fp_mutex;
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struct ocfs2_lock_res fp_flock;
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};
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int ocfs2_add_inode_data(struct ocfs2_super *osb,
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struct inode *inode,
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u32 *logical_offset,
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u32 clusters_to_add,
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int mark_unwritten,
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struct buffer_head *fe_bh,
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handle_t *handle,
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struct ocfs2_alloc_context *data_ac,
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struct ocfs2_alloc_context *meta_ac,
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enum ocfs2_alloc_restarted *reason_ret);
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int ocfs2_set_inode_size(handle_t *handle,
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struct inode *inode,
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struct buffer_head *fe_bh,
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u64 new_i_size);
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int ocfs2_simple_size_update(struct inode *inode,
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struct buffer_head *di_bh,
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u64 new_i_size);
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int ocfs2_truncate_file(struct inode *inode,
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struct buffer_head *di_bh,
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u64 new_i_size);
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int ocfs2_extend_no_holes(struct inode *inode, struct buffer_head *di_bh,
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u64 new_i_size, u64 zero_to);
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int ocfs2_zero_extend(struct inode *inode, struct buffer_head *di_bh,
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loff_t zero_to);
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int ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
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u32 clusters_to_add, int mark_unwritten);
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int ocfs2_setattr(struct dentry *dentry, struct iattr *attr);
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int ocfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
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struct kstat *stat);
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int ocfs2_permission(struct inode *inode, int mask);
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int ocfs2_should_update_atime(struct inode *inode,
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struct vfsmount *vfsmnt);
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int ocfs2_update_inode_atime(struct inode *inode,
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struct buffer_head *bh);
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int ocfs2_change_file_space(struct file *file, unsigned int cmd,
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struct ocfs2_space_resv *sr);
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int ocfs2_check_range_for_refcount(struct inode *inode, loff_t pos,
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size_t count);
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int ocfs2_remove_inode_range(struct inode *inode,
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struct buffer_head *di_bh, u64 byte_start,
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u64 byte_len);
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#endif /* OCFS2_FILE_H */
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