diff options
Diffstat (limited to 'include/linux/dax.h')
| -rw-r--r-- | include/linux/dax.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/dax.h b/include/linux/dax.h index 72dc81de3ddb..70600b63083f 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -5,6 +5,9 @@ #include <linux/mm.h> #include <asm/pgtable.h> +/* We use lowest available exceptional entry bit for locking */ +#define RADIX_DAX_ENTRY_LOCK (1 << RADIX_TREE_EXCEPTIONAL_SHIFT) + ssize_t dax_do_io(struct kiocb *, struct inode *, struct iov_iter *, loff_t, get_block_t, dio_iodone_t, int flags); int dax_zero_page_range(struct inode *, loff_t from, unsigned len, get_block_t); |