diff options
Diffstat (limited to 'fs/xfs/xfs_iomap.h')
| -rw-r--r-- | fs/xfs/xfs_iomap.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/fs/xfs/xfs_iomap.h b/fs/xfs/xfs_iomap.h new file mode 100644 index 000000000..c61705488 --- /dev/null +++ b/fs/xfs/xfs_iomap.h @@ -0,0 +1,47 @@ +// 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__*/ |