diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/fs.h | 2 | ||||
| -rw-r--r-- | include/linux/mm.h | 7 |
2 files changed, 6 insertions, 3 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index ca6d8c806f47..5a8a273d5b2f 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2552,6 +2552,8 @@ extern int sb_min_blocksize(struct super_block *, int); extern int generic_file_mmap(struct file *, struct vm_area_struct *); extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *); +extern int generic_file_remap_pages(struct vm_area_struct *, unsigned long addr, + unsigned long size, pgoff_t pgoff); extern int file_read_actor(read_descriptor_t * desc, struct page *page, unsigned long offset, unsigned long size); int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk); extern ssize_t generic_file_aio_read(struct kiocb *, const struct iovec *, unsigned long, loff_t); diff --git a/include/linux/mm.h b/include/linux/mm.h index fb0685b17914..44d3fc25f556 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -105,7 +105,6 @@ extern unsigned int kobjsize(const void *objp); #define VM_ARCH_1 0x01000000 /* Architecture-specific flag */ #define VM_NODUMP 0x04000000 /* Do not include in the core dump */ -#define VM_CAN_NONLINEAR 0x08000000 /* Has ->fault & does nonlinear pages */ #define VM_MIXEDMAP 0x10000000 /* Can contain "struct page" and pure PFN pages */ #define VM_HUGEPAGE 0x20000000 /* MADV_HUGEPAGE marked this vma */ #define VM_NOHUGEPAGE 0x40000000 /* MADV_NOHUGEPAGE marked this vma */ @@ -171,8 +170,7 @@ extern pgprot_t protection_map[16]; * of VM_FAULT_xxx flags that give details about how the fault was handled. * * pgoff should be used in favour of virtual_address, if possible. If pgoff - * is used, one may set VM_CAN_NONLINEAR in the vma->vm_flags to get nonlinear - * mapping support. + * is used, one may implement ->remap_pages to get nonlinear mapping support. */ struct vm_fault { unsigned int flags; /* FAULT_FLAG_xxx flags */ @@ -230,6 +228,9 @@ struct vm_operations_struct { int (*migrate)(struct vm_area_struct *vma, const nodemask_t *from, const nodemask_t *to, unsigned long flags); #endif + /* called by sys_remap_file_pages() to populate non-linear mapping */ + int (*remap_pages)(struct vm_area_struct *vma, unsigned long addr, + unsigned long size, pgoff_t pgoff); }; struct mmu_gather; |