github.com/scaleoutsean/fusego@v0.0.0-20220224074057-4a6429e46bb8/internal/buffer/out_message_linux.go (about)

     1  // Copyright 2015 Google Inc. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package buffer
    16  
    17  // The maximum read size that we expect to ever see from the kernel, used for
    18  // calculating the size of out messages.
    19  //
    20  // For 4 KiB pages, this is 1024 KiB (cf. https://github.com/torvalds/linux/blob/15db16837a35d8007cb8563358787412213db25e/fs/fuse/fuse_i.h#L38-L40)
    21  const MaxReadSize = 1 << 20