diff options
Diffstat (limited to 'fs/iomap.c')
| -rw-r--r-- | fs/iomap.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/fs/iomap.c b/fs/iomap.c index 8e2fc17c266f..477817c00bac 100644 --- a/fs/iomap.c +++ b/fs/iomap.c @@ -24,6 +24,7 @@ #include <linux/uio.h> #include <linux/backing-dev.h> #include <linux/buffer_head.h> +#include <linux/dax.h> #include "internal.h" typedef loff_t (*iomap_actor_t)(struct inode *inode, loff_t pos, loff_t len, @@ -268,6 +269,15 @@ static int iomap_zero(struct inode *inode, loff_t pos, unsigned offset, return iomap_write_end(inode, pos, bytes, bytes, page); } +static int iomap_dax_zero(loff_t pos, unsigned offset, unsigned bytes, + struct iomap *iomap) +{ + sector_t sector = iomap->blkno + + (((pos & ~(PAGE_SIZE - 1)) - iomap->offset) >> 9); + + return __dax_zero_page_range(iomap->bdev, sector, offset, bytes); +} + static loff_t iomap_zero_range_actor(struct inode *inode, loff_t pos, loff_t count, void *data, struct iomap *iomap) @@ -286,7 +296,10 @@ iomap_zero_range_actor(struct inode *inode, loff_t pos, loff_t count, offset = pos & (PAGE_SIZE - 1); /* Within page */ bytes = min_t(unsigned, PAGE_SIZE - offset, count); - status = iomap_zero(inode, pos, offset, bytes, iomap); + if (IS_DAX(inode)) + status = iomap_dax_zero(pos, offset, bytes, iomap); + else + status = iomap_zero(inode, pos, offset, bytes, iomap); if (status < 0) return status; |