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fs: make the pipe_buf_operations ->confirm operation optional

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Just return 0 for success if it is not present.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig
2020-05-20 17:58:15 +02:00
committed by Al Viro
parent 76887c2567
commit b8d9e7f241
6 changed files with 3 additions and 25 deletions
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1
kernel/relay.c
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@@ -1177,7 +1177,6 @@ static void relay_pipe_buf_release(struct pipe_inode_info *pipe,
}
static const struct pipe_buf_operations relay_pipe_buf_ops = {
.confirm = generic_pipe_buf_confirm,
.release = relay_pipe_buf_release,
.steal = generic_pipe_buf_steal,
.get = generic_pipe_buf_get,

1
kernel/trace/trace.c
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@@ -7574,7 +7574,6 @@ static bool buffer_pipe_buf_get(struct pipe_inode_info *pipe,
/* Pipe buffer operations for a buffer. */
static const struct pipe_buf_operations buffer_pipe_buf_ops = {
.confirm = generic_pipe_buf_confirm,
.release = buffer_pipe_buf_release,
.get = buffer_pipe_buf_get,
};