On Thu, Dec 03, 2015 at 03:55:35PM -0500, Anna Schumaker wrote:
> @@ -498,6 +499,22 @@ __be32 nfsd4_set_nfs4_label(struct svc_rqst *rqstp, struct svc_fh *fhp,
> }
> #endif
>
> +ssize_t nfsd_copy_range(struct file *src, u64 src_pos,
> + struct file *dst, u64 dst_pos,
> + u64 count)
> +{
> + ssize_t bytes;
> + u64 limit = 0x10000000;
Why that value? Could I get a comment here?
> +
> + if (count > limit)
> + count = limit;
> +
> + bytes = vfs_copy_file_range(src, src_pos, dst, dst_pos, count, 0);
Sorry, I lost track of the copy discussions: does this only work on
filesystems with special support, or does it fall back on doing the copy
by hand? Which filesystems (of the exportable filesystems) support
this?
--b.
> + if (bytes > 0)
> + vfs_fsync_range(dst, dst_pos, dst_pos + bytes, 0);
> + return bytes;
> +}
> +
> __be32 nfsd4_vfs_fallocate(struct svc_rqst *rqstp, struct svc_fh *fhp,
> struct file *file, loff_t offset, loff_t len,
> int flags)
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
