tree 5e3d52d76457f7c49b223183a590668616e7f573
parent eeac8ede17557680855031c6f305ece2378af326
author Jens Axboe <axboe@kernel.dk> 1678236707 -0700
committer Jens Axboe <axboe@kernel.dk> 1678845297 -0600

fs: add 'nonblock' parameter to pipe_buf_confirm() and fops method

In preparation for being able to do a nonblocking confirm attempt of a
pipe buffer, plumb a parameter through the stack to indicate if this is
a nonblocking attempt or not.

Each caller is passing down 'false' right now, but the only confirm
method in the tree, page_cache_pipe_buf_confirm(), is converted to do a
trylock_page() if nonblock == true.

Acked-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>