On 11:24 28/03, Adam Borowski wrote:
> Used by userspace to detect DAX.
Thanks. I will add it to the series.
>
> Signed-off-by: Adam Borowski <kilob...@angband.pl>
> ---
> fs/btrfs/file.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
> index 196c8f37ff9d..8efdb040bc1d 100644
> --- a/fs/btrfs/file.c
> +++ b/fs/btrfs/file.c
> @@ -16,6 +16,7 @@
> #include <linux/btrfs.h>
> #include <linux/uio.h>
> #include <linux/iversion.h>
> +#include <linux/mman.h>
> #include "ctree.h"
> #include "disk-io.h"
> #include "transaction.h"
> @@ -3320,6 +3321,7 @@ const struct file_operations btrfs_file_operations = {
> .splice_read = generic_file_splice_read,
> .write_iter = btrfs_file_write_iter,
> .mmap = btrfs_file_mmap,
> + .mmap_supported_flags = MAP_SYNC,
> .open = btrfs_file_open,
> .release = btrfs_release_file,
> .fsync = btrfs_sync_file,
> --
> 2.20.1
>
--
Goldwyn
