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[PATCH] splice: call handle_ra_miss() on failure to lookup page
author
Jens Axboe
<axboe@suse.de>
Mon, 1 May 2006 17:59:54 +0000
(19:59 +0200)
committer
Jens Axboe
<axboe@suse.de>
Mon, 1 May 2006 17:59:54 +0000
(19:59 +0200)
Notify the readahead logic of the missing page. Suggested by
Oleg Nesterov.
Signed-off-by: Jens Axboe <axboe@suse.de>
fs/splice.c
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diff --git
a/fs/splice.c
b/fs/splice.c
index
d7538d8
..
0a69164
100644
(file)
--- a/
fs/splice.c
+++ b/
fs/splice.c
@@
-302,6
+302,12
@@
__generic_file_splice_read(struct file *in, loff_t *ppos,
page = find_get_page(mapping, index);
if (!page) {
/*
+ * Make sure the read-ahead engine is notified
+ * about this failure.
+ */
+ handle_ra_miss(mapping, &in->f_ra, index);
+
+ /*
* page didn't exist, allocate one.
*/
page = page_cache_alloc_cold(mapping);