cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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xfs_reflink.h (2470B)

      1// SPDX-License-Identifier: GPL-2.0+
      2/*
      3 * Copyright (C) 2016 Oracle.  All Rights Reserved.
      4 * Author: Darrick J. Wong <darrick.wong@oracle.com>
      5 */
      6#ifndef __XFS_REFLINK_H
      7#define __XFS_REFLINK_H 1
      8
      9static inline bool xfs_is_always_cow_inode(struct xfs_inode *ip)
     10{
     11	return ip->i_mount->m_always_cow && xfs_has_reflink(ip->i_mount);
     12}
     13
     14static inline bool xfs_is_cow_inode(struct xfs_inode *ip)
     15{
     16	return xfs_is_reflink_inode(ip) || xfs_is_always_cow_inode(ip);
     17}
     18
     19extern int xfs_reflink_find_shared(struct xfs_mount *mp, struct xfs_trans *tp,
     20		xfs_agnumber_t agno, xfs_agblock_t agbno, xfs_extlen_t aglen,
     21		xfs_agblock_t *fbno, xfs_extlen_t *flen, bool find_maximal);
     22extern int xfs_reflink_trim_around_shared(struct xfs_inode *ip,
     23		struct xfs_bmbt_irec *irec, bool *shared);
     24int xfs_bmap_trim_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap,
     25		bool *shared);
     26
     27int xfs_reflink_allocate_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap,
     28		struct xfs_bmbt_irec *cmap, bool *shared, uint *lockmode,
     29		bool convert_now);
     30extern int xfs_reflink_convert_cow(struct xfs_inode *ip, xfs_off_t offset,
     31		xfs_off_t count);
     32
     33extern int xfs_reflink_cancel_cow_blocks(struct xfs_inode *ip,
     34		struct xfs_trans **tpp, xfs_fileoff_t offset_fsb,
     35		xfs_fileoff_t end_fsb, bool cancel_real);
     36extern int xfs_reflink_cancel_cow_range(struct xfs_inode *ip, xfs_off_t offset,
     37		xfs_off_t count, bool cancel_real);
     38extern int xfs_reflink_end_cow(struct xfs_inode *ip, xfs_off_t offset,
     39		xfs_off_t count);
     40extern int xfs_reflink_recover_cow(struct xfs_mount *mp);
     41extern loff_t xfs_reflink_remap_range(struct file *file_in, loff_t pos_in,
     42		struct file *file_out, loff_t pos_out, loff_t len,
     43		unsigned int remap_flags);
     44extern int xfs_reflink_inode_has_shared_extents(struct xfs_trans *tp,
     45		struct xfs_inode *ip, bool *has_shared);
     46extern int xfs_reflink_clear_inode_flag(struct xfs_inode *ip,
     47		struct xfs_trans **tpp);
     48extern int xfs_reflink_unshare(struct xfs_inode *ip, xfs_off_t offset,
     49		xfs_off_t len);
     50extern int xfs_reflink_remap_prep(struct file *file_in, loff_t pos_in,
     51		struct file *file_out, loff_t pos_out, loff_t *len,
     52		unsigned int remap_flags);
     53extern int xfs_reflink_remap_blocks(struct xfs_inode *src, loff_t pos_in,
     54		struct xfs_inode *dest, loff_t pos_out, loff_t remap_len,
     55		loff_t *remapped);
     56extern int xfs_reflink_update_dest(struct xfs_inode *dest, xfs_off_t newlen,
     57		xfs_extlen_t cowextsize, unsigned int remap_flags);
     58
     59#endif /* __XFS_REFLINK_H */