On 12/02, Eric Biggers wrote:
> On Thu, Dec 02, 2021 at 10:04:11PM +0800, Chao Yu wrote:
> > On 2021/12/2 12:15, Eric Biggers wrote:
> > > On Thu, Dec 02, 2021 at 11:10:41AM +0800, Chao Yu wrote:
> > > > Why not relocating this check before f2fs_map_blocks()?
> >
> > Wait, it supports DIO in multi-device image after commit 71f2c8206202
> > ("f2fs: multidevice: support direct IO"), how about
> > checking with f2fs_allow_multi_device_dio()?
> >
> > Thanks,
> >
>
> Okay, that was not the case when I sent this patch originally. We'll need to
> update this to support multiple devices.
Chao/Eric, does this make sense?
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -4070,11 +4070,10 @@ static int f2fs_iomap_begin(struct inode *inode, loff_t
offset, loff_t length,
}
if (WARN_ON_ONCE(!__is_valid_data_blkaddr(map.m_pblk)))
return -EINVAL;
- iomap->addr = blks_to_bytes(inode, map.m_pblk);
- if (WARN_ON_ONCE(f2fs_is_multi_device(F2FS_I_SB(inode))))
- return -EINVAL;
- iomap->bdev = inode->i_sb->s_bdev;
+ iomap->bdev = map->m_multidev_dio ? map.m_bdev :
+ inode->i_sb->s_bdev;
+ iomap->addr = blks_to_bytes(inode, map.m_pblk);
} else {
iomap->length = blks_to_bytes(inode, next_pgofs) -
iomap->offset;
>
> - Eric
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