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authorDai Ngo <dai.ngo@oracle.com>2021-05-21 15:09:38 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2021-08-10 14:18:35 -0400
commitca7d1d1a0b975d3d8aaaeab008a07bb3d3c5ec7e (patch)
tree86d877fe1afbb6e22d08f594831d28f75dc947eb /fs/nfs/nfs4file.c
parent9eff97abef057c02a13bb3aa0e4821cd60fd80df (diff)
NFSv4.2: remove restriction of copy size for inter-server copy.
Currently inter-server copy is allowed only if the copy size is larger than (rsize*14) which is the over-head of the mount operation of the source export. This patch, relying on the delayed unmount feature, removes this restriction since the mount and unmount overhead is now not applicable for every inter-server copy. Signed-off-by: Dai Ngo <dai.ngo@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/nfs4file.c')
-rw-r--r--fs/nfs/nfs4file.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index c820de58a661..c91565227ea2 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -158,13 +158,11 @@ static ssize_t __nfs4_copy_file_range(struct file *file_in, loff_t pos_in,
sync = true;
retry:
if (!nfs42_files_from_same_server(file_in, file_out)) {
- /* for inter copy, if copy size if smaller than 12 RPC
- * payloads, fallback to traditional copy. There are
- * 14 RPCs during an NFSv4.x mount between source/dest
- * servers.
+ /*
+ * for inter copy, if copy size is too small
+ * then fallback to generic copy.
*/
- if (sync ||
- count <= 14 * NFS_SERVER(file_inode(file_in))->rsize)
+ if (sync)
return -EOPNOTSUPP;
cn_resp = kzalloc(sizeof(struct nfs42_copy_notify_res),
GFP_NOFS);