[PATCH] splice: switch to using page_cache_readahead()
Avoids doing useless work, when the file is fully cached.
Signed-off-by: Jens Axboe <axboe@suse.de>
diff --git a/fs/splice.c b/fs/splice.c
index 447ebc0..dc205f6 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -299,8 +299,8 @@
* read-ahead if this is a non-zero offset (we are likely doing small
* chunk splice and the page is already there) for a single page.
*/
- if (!loff || spd.nr_pages > 1)
- do_page_cache_readahead(mapping, in, index, spd.nr_pages);
+ if (!loff || nr_pages > 1)
+ page_cache_readahead(mapping, &in->f_ra, in, index, nr_pages);
/*
* Now fill in the holes: