mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 06:04:14 +08:00
e2aaee9cd3
Move the double-inode locking helpers to xfs_inode.c since they're not specific to reflink. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
61 lines
2.4 KiB
C
61 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2016 Oracle. All Rights Reserved.
|
|
* Author: Darrick J. Wong <darrick.wong@oracle.com>
|
|
*/
|
|
#ifndef __XFS_REFLINK_H
|
|
#define __XFS_REFLINK_H 1
|
|
|
|
static inline bool xfs_is_always_cow_inode(struct xfs_inode *ip)
|
|
{
|
|
return ip->i_mount->m_always_cow &&
|
|
xfs_sb_version_hasreflink(&ip->i_mount->m_sb);
|
|
}
|
|
|
|
static inline bool xfs_is_cow_inode(struct xfs_inode *ip)
|
|
{
|
|
return xfs_is_reflink_inode(ip) || xfs_is_always_cow_inode(ip);
|
|
}
|
|
|
|
extern int xfs_reflink_find_shared(struct xfs_mount *mp, struct xfs_trans *tp,
|
|
xfs_agnumber_t agno, xfs_agblock_t agbno, xfs_extlen_t aglen,
|
|
xfs_agblock_t *fbno, xfs_extlen_t *flen, bool find_maximal);
|
|
extern int xfs_reflink_trim_around_shared(struct xfs_inode *ip,
|
|
struct xfs_bmbt_irec *irec, bool *shared);
|
|
int xfs_bmap_trim_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap,
|
|
bool *shared);
|
|
|
|
int xfs_reflink_allocate_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *imap,
|
|
struct xfs_bmbt_irec *cmap, bool *shared, uint *lockmode,
|
|
bool convert_now);
|
|
extern int xfs_reflink_convert_cow(struct xfs_inode *ip, xfs_off_t offset,
|
|
xfs_off_t count);
|
|
|
|
extern int xfs_reflink_cancel_cow_blocks(struct xfs_inode *ip,
|
|
struct xfs_trans **tpp, xfs_fileoff_t offset_fsb,
|
|
xfs_fileoff_t end_fsb, bool cancel_real);
|
|
extern int xfs_reflink_cancel_cow_range(struct xfs_inode *ip, xfs_off_t offset,
|
|
xfs_off_t count, bool cancel_real);
|
|
extern int xfs_reflink_end_cow(struct xfs_inode *ip, xfs_off_t offset,
|
|
xfs_off_t count);
|
|
extern int xfs_reflink_recover_cow(struct xfs_mount *mp);
|
|
extern loff_t xfs_reflink_remap_range(struct file *file_in, loff_t pos_in,
|
|
struct file *file_out, loff_t pos_out, loff_t len,
|
|
unsigned int remap_flags);
|
|
extern int xfs_reflink_inode_has_shared_extents(struct xfs_trans *tp,
|
|
struct xfs_inode *ip, bool *has_shared);
|
|
extern int xfs_reflink_clear_inode_flag(struct xfs_inode *ip,
|
|
struct xfs_trans **tpp);
|
|
extern int xfs_reflink_unshare(struct xfs_inode *ip, xfs_off_t offset,
|
|
xfs_off_t len);
|
|
extern int xfs_reflink_remap_prep(struct file *file_in, loff_t pos_in,
|
|
struct file *file_out, loff_t pos_out, loff_t *len,
|
|
unsigned int remap_flags);
|
|
extern int xfs_reflink_remap_blocks(struct xfs_inode *src, loff_t pos_in,
|
|
struct xfs_inode *dest, loff_t pos_out, loff_t remap_len,
|
|
loff_t *remapped);
|
|
extern int xfs_reflink_update_dest(struct xfs_inode *dest, xfs_off_t newlen,
|
|
xfs_extlen_t cowextsize, unsigned int remap_flags);
|
|
|
|
#endif /* __XFS_REFLINK_H */
|