From: Jens Axboe <axboe@suse.de>
Date: Sun, 2 Apr 2006 21:04:46 +0000 (+0200)
Subject: [PATCH] splice: improve writeback and clean up page stealing
X-Git-Tag: v2.6.17-rc1~2^2~5
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4f6f0bd2ffa4e31c3524f5e65c84a29b6ab73307;p=pandora-kernel.git

[PATCH] splice: improve writeback and clean up page stealing

By cleaning up the writeback logic (killing write_one_page() and the manual
set_page_dirty()), we can get rid of ->stolen inside the pipe_buffer and
just keep it local in pipe_to_file().

This also adds dirty page balancing logic and O_SYNC handling.

Signed-off-by: Jens Axboe <axboe@suse.de>
---

diff --git a/fs/pipe.c b/fs/pipe.c
index 109a102c150d..5093408746b8 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -124,7 +124,6 @@ static void anon_pipe_buf_unmap(struct pipe_inode_info *info, struct pipe_buffer
 static int anon_pipe_buf_steal(struct pipe_inode_info *info,
 			       struct pipe_buffer *buf)
 {
-	buf->stolen = 1;
 	return 0;
 }
 
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