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| author | Namhyung Kim <namhyung@gmail.com> | 2011-05-23 19:58:53 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-05-23 19:58:53 +0200 |
| commit | 825cdcb1a5aaaefd884f302b4a3a9efb672c89c1 (patch) | |
| tree | 26b2ef2b82cb4fea304c8e16c9e4f546271fddd6 /fs/splice.c | |
| parent | 61c4f2c81c61f73549928dfd9f3e8f26aa36a8cf (diff) | |
| download | kernel_samsung_smdk4412-825cdcb1a5aaaefd884f302b4a3a9efb672c89c1.zip kernel_samsung_smdk4412-825cdcb1a5aaaefd884f302b4a3a9efb672c89c1.tar.gz kernel_samsung_smdk4412-825cdcb1a5aaaefd884f302b4a3a9efb672c89c1.tar.bz2 | |
splice: add wakeup_pipe_readers()
Add and use wakeup_pipe_readers() to consolidate duplicated codes.
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'fs/splice.c')
| -rw-r--r-- | fs/splice.c | 33 |
1 files changed, 15 insertions, 18 deletions
diff --git a/fs/splice.c b/fs/splice.c index 50a5d978..aa866d3 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -162,6 +162,14 @@ static const struct pipe_buf_operations user_page_pipe_buf_ops = { .get = generic_pipe_buf_get, }; +static void wakeup_pipe_readers(struct pipe_inode_info *pipe) +{ + smp_mb(); + if (waitqueue_active(&pipe->wait)) + wake_up_interruptible(&pipe->wait); + kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN); +} + /** * splice_to_pipe - fill passed data into a pipe * @pipe: pipe to fill @@ -247,12 +255,8 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe, pipe_unlock(pipe); - 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) + wakeup_pipe_readers(pipe); while (page_nr < spd_pages) spd->spd_release(spd, page_nr++); @@ -1892,12 +1896,9 @@ retry: /* * If we put data in the output pipe, wakeup any potential readers. */ - if (ret > 0) { - smp_mb(); - if (waitqueue_active(&opipe->wait)) - wake_up_interruptible(&opipe->wait); - kill_fasync(&opipe->fasync_readers, SIGIO, POLL_IN); - } + if (ret > 0) + wakeup_pipe_readers(opipe); + if (input_wakeup) wakeup_pipe_writers(ipipe); @@ -1976,12 +1977,8 @@ static int link_pipe(struct pipe_inode_info *ipipe, /* * If we put data in the output pipe, wakeup any potential readers. */ - if (ret > 0) { - smp_mb(); - if (waitqueue_active(&opipe->wait)) - wake_up_interruptible(&opipe->wait); - kill_fasync(&opipe->fasync_readers, SIGIO, POLL_IN); - } + if (ret > 0) + wakeup_pipe_readers(opipe); return ret; } |