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| author | Jens Axboe <jens.axboe@oracle.com> | 2007-06-15 13:16:13 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2007-06-15 13:16:13 +0200 |
| commit | 02676e5aee271c1f20d7d44249d26741aef1e846 (patch) | |
| tree | 72394b5bfaba6b9637488a3d5aa82d7668531d95 | |
| parent | 00de00bdad278783b3664ad2969954a707f5944a (diff) | |
| download | lwn-02676e5aee271c1f20d7d44249d26741aef1e846.tar.gz lwn-02676e5aee271c1f20d7d44249d26741aef1e846.zip | |
splice: only check do_wakeup in splice_to_pipe() for a real pipe
We only ever set do_wakeup to non-zero if the pipe has an inode
backing, so it's pointless to check outside the pipe->inode
check.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| -rw-r--r-- | fs/splice.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/fs/splice.c b/fs/splice.c index 186fad463c43..e7d7080de2f9 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -245,14 +245,15 @@ static ssize_t splice_to_pipe(struct pipe_inode_info *pipe, pipe->waiting_writers--; } - if (pipe->inode) + if (pipe->inode) { mutex_unlock(&pipe->inode->i_mutex); - if (do_wakeup) { - smp_mb(); - if (waitqueue_active(&pipe->wait)) - wake_up_interruptible(&pipe->wait); - kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN); + if (do_wakeup) { + smp_mb(); + if (waitqueue_active(&pipe->wait)) + wake_up_interruptible(&pipe->wait); + kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN); + } } while (page_nr < spd_pages) |