On 3/22/25 05:33, Daeho Jeong wrote:
> From: Daeho Jeong <daehoje...@google.com>
>
> support a file truncation to zero size for device aliasing files.
>
> Signed-off-by: Daeho Jeong <daehoje...@google.com>
> ---
> v2: make the extent length zero
> ---
> fs/f2fs/file.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
> index f92a9fba9991..69952f208086 100644
> --- a/fs/f2fs/file.c
> +++ b/fs/f2fs/file.c
> @@ -775,6 +775,11 @@ int f2fs_do_truncate_blocks(struct inode *inode, u64
> from, bool lock)
> f2fs_update_time(sbi, REQ_TIME);
>
> f2fs_put_page(ipage, 1);
> +
> + write_lock(&et->lock);
> + et->largest.len = 0;
> + write_unlock(&et->lock);
f2fs_mark_inode_dirty_sync(inode, true); ?
Thanks,
> +
> goto out;
> }
>
> @@ -1036,7 +1041,7 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry
> *dentry,
>
> if ((attr->ia_valid & ATTR_SIZE)) {
> if (!f2fs_is_compress_backend_ready(inode) ||
> - IS_DEVICE_ALIASING(inode))
> + (IS_DEVICE_ALIASING(inode) && attr->ia_size))
> return -EOPNOTSUPP;
> if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED) &&
> !IS_ALIGNED(attr->ia_size,
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