47 строки
1.6 KiB
C
47 строки
1.6 KiB
C
#ifndef _LINUX_DAX_H
|
|
#define _LINUX_DAX_H
|
|
|
|
#include <linux/fs.h>
|
|
#include <linux/mm.h>
|
|
#include <asm/pgtable.h>
|
|
|
|
ssize_t dax_do_io(struct kiocb *, struct inode *, struct iov_iter *, loff_t,
|
|
get_block_t, dio_iodone_t, int flags);
|
|
int dax_clear_blocks(struct inode *, sector_t block, long size);
|
|
int dax_zero_page_range(struct inode *, loff_t from, unsigned len, get_block_t);
|
|
int dax_truncate_page(struct inode *, loff_t from, get_block_t);
|
|
int dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t,
|
|
dax_iodone_t);
|
|
int __dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t,
|
|
dax_iodone_t);
|
|
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
|
|
int dax_pmd_fault(struct vm_area_struct *, unsigned long addr, pmd_t *,
|
|
unsigned int flags, get_block_t, dax_iodone_t);
|
|
int __dax_pmd_fault(struct vm_area_struct *, unsigned long addr, pmd_t *,
|
|
unsigned int flags, get_block_t, dax_iodone_t);
|
|
#else
|
|
static inline int dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr,
|
|
pmd_t *pmd, unsigned int flags, get_block_t gb,
|
|
dax_iodone_t di)
|
|
{
|
|
return VM_FAULT_FALLBACK;
|
|
}
|
|
#define __dax_pmd_fault dax_pmd_fault
|
|
#endif
|
|
int dax_pfn_mkwrite(struct vm_area_struct *, struct vm_fault *);
|
|
#define dax_mkwrite(vma, vmf, gb, iod) dax_fault(vma, vmf, gb, iod)
|
|
#define __dax_mkwrite(vma, vmf, gb, iod) __dax_fault(vma, vmf, gb, iod)
|
|
|
|
static inline bool vma_is_dax(struct vm_area_struct *vma)
|
|
{
|
|
return vma->vm_file && IS_DAX(vma->vm_file->f_mapping->host);
|
|
}
|
|
|
|
static inline bool dax_mapping(struct address_space *mapping)
|
|
{
|
|
return mapping->host && IS_DAX(mapping->host);
|
|
}
|
|
int dax_writeback_mapping_range(struct address_space *mapping, loff_t start,
|
|
loff_t end);
|
|
#endif
|