[PATCH] splice: fix smaller sized splice reads
Signed-off-by: Jens Axboe <axboe@suse.de>
diff --git a/fs/splice.c b/fs/splice.c
index 22fac87..0559e75 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -275,6 +275,15 @@
error = 0;
bytes = 0;
for (i = 0; i < nr_pages; i++, index++) {
+ unsigned int this_len;
+
+ if (!len)
+ break;
+
+ /*
+ * this_len is the max we'll use from this page
+ */
+ this_len = min(len, PAGE_CACHE_SIZE - loff);
find_page:
/*
* lookup the page for this index
@@ -366,11 +375,13 @@
* force quit after adding this page
*/
nr_pages = i;
+ this_len = min(this_len, loff);
}
}
fill_it:
pages[i] = page;
- bytes += PAGE_CACHE_SIZE - loff;
+ bytes += this_len;
+ len -= this_len;
loff = 0;
}