diff options
| author | Max Kellermann <max.kellermann@ionos.com> | 2023-09-21 09:57:53 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-31 16:17:09 -0800 |
| commit | 6f5c4aaddd637d3e19a222312ba170ab851437dd (patch) | |
| tree | cc5fa944112e650cda8cbf0b4a651a95648559d0 /include | |
| parent | 28f010dc50df0f7987c04112114fcfa7e0803566 (diff) | |
| download | linux-stable-6f5c4aaddd637d3e19a222312ba170ab851437dd.tar.gz linux-stable-6f5c4aaddd637d3e19a222312ba170ab851437dd.tar.bz2 linux-stable-6f5c4aaddd637d3e19a222312ba170ab851437dd.zip | |
fs/pipe: move check to pipe_has_watch_queue()
[ Upstream commit b4bd6b4bac8edd61eb8f7b836969d12c0c6af165 ]
This declutters the code by reducing the number of #ifdefs and makes
the watch_queue checks simpler. This has no runtime effect; the
machine code is identical.
Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
Message-Id: <20230921075755.1378787-2-max.kellermann@ionos.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Stable-dep-of: e95aada4cb93 ("pipe: wakeup wr_wait after setting max_usage")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pipe_fs_i.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index 28b3c6a67397..1f1e7ae95320 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -125,6 +125,22 @@ struct pipe_buf_operations { }; /** + * pipe_has_watch_queue - Check whether the pipe is a watch_queue, + * i.e. it was created with O_NOTIFICATION_PIPE + * @pipe: The pipe to check + * + * Return: true if pipe is a watch queue, false otherwise. + */ +static inline bool pipe_has_watch_queue(const struct pipe_inode_info *pipe) +{ +#ifdef CONFIG_WATCH_QUEUE + return pipe->watch_queue != NULL; +#else + return false; +#endif +} + +/** * pipe_empty - Return true if the pipe is empty * @head: The pipe ring head pointer * @tail: The pipe ring tail pointer |