mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 04:03:58 +08:00
e666aa37f4
Used the per-fork sequence counter to avoid lookups in the writeback code unless the COW fork actually changed. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2003-2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#ifndef __XFS_IOMAP_H__
|
|
#define __XFS_IOMAP_H__
|
|
|
|
#include <linux/iomap.h>
|
|
|
|
struct xfs_inode;
|
|
struct xfs_bmbt_irec;
|
|
|
|
int xfs_iomap_write_direct(struct xfs_inode *, xfs_off_t, size_t,
|
|
struct xfs_bmbt_irec *, int);
|
|
int xfs_iomap_write_allocate(struct xfs_inode *, int, xfs_off_t,
|
|
struct xfs_bmbt_irec *, unsigned int *);
|
|
int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t, bool);
|
|
|
|
void xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *,
|
|
struct xfs_bmbt_irec *);
|
|
xfs_extlen_t xfs_eof_alignment(struct xfs_inode *ip, xfs_extlen_t extsize);
|
|
|
|
static inline xfs_filblks_t
|
|
xfs_aligned_fsb_count(
|
|
xfs_fileoff_t offset_fsb,
|
|
xfs_filblks_t count_fsb,
|
|
xfs_extlen_t extsz)
|
|
{
|
|
if (extsz) {
|
|
xfs_extlen_t align;
|
|
|
|
div_u64_rem(offset_fsb, extsz, &align);
|
|
if (align)
|
|
count_fsb += align;
|
|
div_u64_rem(count_fsb, extsz, &align);
|
|
if (align)
|
|
count_fsb += extsz - align;
|
|
}
|
|
|
|
return count_fsb;
|
|
}
|
|
|
|
extern const struct iomap_ops xfs_iomap_ops;
|
|
extern const struct iomap_ops xfs_xattr_iomap_ops;
|
|
|
|
#endif /* __XFS_IOMAP_H__*/
|