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| author |   Max Kellermann <max.kellermann@ionos.com> | 2023-09-21 09:57:54 +0200 |
|---|---|---|
| committer |   Christian Brauner <brauner@kernel.org> | 2023-10-19 11:02:47 +0200 |
| commit | dfaabf916b1ca83cfac856745db2fc9d57d9b13a (patch) | |
| tree | 33069461ea8adc197f3eab1e3c0d9b3551ed6e25 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | fs/pipe: move check to pipe_has_watch_queue() (diff) | |
| download | wireguard-linux-dfaabf916b1ca83cfac856745db2fc9d57d9b13a.tar.xz wireguard-linux-dfaabf916b1ca83cfac856745db2fc9d57d9b13a.zip | |
fs/pipe: remove unnecessary spinlock from pipe_write()
This reverts commit 8df441294dd3 ("pipe: Check for ring full inside of
the spinlock in pipe_write()") which was obsoleted by commit
c73be61cede ("pipe: Add general notification queue support") because
now pipe_write() fails early with -EXDEV if there is a watch_queue.
Without a watch_queue, no notifications can be posted to the pipe and
mutex protection is enough, as can be seen in splice_pipe_to_pipe()
which does not use the spinlock either.
Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
Message-Id: <20230921075755.1378787-3-max.kellermann@ionos.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions