Btrfs: send, build path string only once in send_hole
There's no point building the path string in each iteration of the
send_hole loop, as it produces always the same string.
Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Chris Mason <clm@fb.com>
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index e8e9f35..1ac3ca9 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -4436,6 +4436,9 @@
p = fs_path_alloc();
if (!p)
return -ENOMEM;
+ ret = get_cur_path(sctx, sctx->cur_ino, sctx->cur_inode_gen, p);
+ if (ret < 0)
+ goto tlv_put_failure;
memset(sctx->read_buf, 0, BTRFS_SEND_READ_SIZE);
while (offset < end) {
len = min_t(u64, end - offset, BTRFS_SEND_READ_SIZE);
@@ -4443,9 +4446,6 @@
ret = begin_cmd(sctx, BTRFS_SEND_C_WRITE);
if (ret < 0)
break;
- ret = get_cur_path(sctx, sctx->cur_ino, sctx->cur_inode_gen, p);
- if (ret < 0)
- break;
TLV_PUT_PATH(sctx, BTRFS_SEND_A_PATH, p);
TLV_PUT_U64(sctx, BTRFS_SEND_A_FILE_OFFSET, offset);
TLV_PUT(sctx, BTRFS_SEND_A_DATA, sctx->read_buf, len);