diff options
Diffstat (limited to 'fs/ext2/file.c')
| -rw-r--r-- | fs/ext2/file.c | 44 |
1 files changed, 38 insertions, 6 deletions
diff --git a/fs/ext2/file.c b/fs/ext2/file.c index 7c87b22a722..e3170171351 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -25,6 +25,36 @@ #include "xattr.h" #include "acl.h" +#ifdef CONFIG_FS_DAX +static int ext2_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + return dax_fault(vma, vmf, ext2_get_block); +} + +static int ext2_dax_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + return dax_mkwrite(vma, vmf, ext2_get_block); +} + +static const struct vm_operations_struct ext2_dax_vm_ops = { + .fault = ext2_dax_fault, + .page_mkwrite = ext2_dax_mkwrite, +}; + +static int ext2_file_mmap(struct file *file, struct vm_area_struct *vma) +{ + if (!IS_DAX(file_inode(file))) + return generic_file_mmap(file, vma); + + file_accessed(file); + vma->vm_ops = &ext2_dax_vm_ops; + vma->vm_flags |= VM_MIXEDMAP; + return 0; +} +#else +#define ext2_file_mmap generic_file_mmap +#endif + /* * Called when filp is released. This happens when all file descriptors * for a single struct file are closed. Note that different open() calls @@ -70,7 +100,7 @@ const struct file_operations ext2_file_operations = { #ifdef CONFIG_COMPAT .compat_ioctl = ext2_compat_ioctl, #endif - .mmap = generic_file_mmap, + .mmap = ext2_file_mmap, .open = dquot_file_open, .release = ext2_release_file, .fsync = ext2_fsync, @@ -78,16 +108,18 @@ const struct file_operations ext2_file_operations = { .splice_write = iter_file_splice_write, }; -#ifdef CONFIG_EXT2_FS_XIP -const struct file_operations ext2_xip_file_operations = { +#ifdef CONFIG_FS_DAX +const struct file_operations ext2_dax_file_operations = { .llseek = generic_file_llseek, - .read = xip_file_read, - .write = xip_file_write, + .read = new_sync_read, + .write = new_sync_write, + .read_iter = generic_file_read_iter, + .write_iter = generic_file_write_iter, .unlocked_ioctl = ext2_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = ext2_compat_ioctl, #endif - .mmap = xip_file_mmap, + .mmap = ext2_file_mmap, .open = dquot_file_open, .release = ext2_release_file, .fsync = ext2_fsync, |